HomeMy WebLinkAboutUniform Design StandardsBRYAN/ COLLEGE STATION
UNIFORM DESIGN GUIDELINES
Domestic Water
DO MESTIC WATER
Table of Contents
General
Submittal Requirements ............................................... ............................... 1
SpecialDesigns ............................................................ ............................... 1
Connections................................................................. ............................... 2
Pipe Selection
PipeMaterials ............................................................... ............................... 2
PipeSizing ................................................................... ...............................
StandardPipe Sizes ..................................................... ............................... 3
LoopingRequirements ................................................. ............................... 3
Maximum Lengths ............................................... ............................... 4
Pressure /Flow Requirements ....................................... ............................... 4
Design Flow Calculation ............................................... ............................... 4
NormalFlow ................................................................. ............................... 4
FireFlows ..................................................................... ............................... 5
Fire Flow System Design Criteria ................................. ............................... 5
Pipe Alignment
HorizontalLayout .......................................................... ............................... 6
VerticalLayout .............................................................. ............................... 6
FlushingDe sic; n ............................................................ ............................... 7
Deflections, L:, _;nds and Curves .................................... ............................... 7
Separation fron Wastewater Facilities ......................... ............................... 7
Valves
Locationand Spacing ................................................... ............................... 8
TappingSleeves ........................................................... ............................... 8
Fire Hydrants
Residential Fife Hydrants ............................................. ............................... 9
Non - Resident,:;) Fire Hydrants ..............................
....... ...............................
Rightof Way Crossings ........................................................ ............................... 9
Encasements ......................................................................... ............................... 10
Easements ............................................................................. ............................... 11
Tables
Table I — Fixture Units Per Unit or Group ..................... ............................... 11
Table II — Peak Water Demand Based on Fixture Units .............................. 12
Table III — A. _ : a Water Demands ........................................................... 12
...........................
Table IV - , . '. Vater Design Demands ...............
.. ...............................
Table V — Mir in Uni Radius for Water Pipe .................. ............................... 13
Effective 8/04/2000 DESIGN GUIDELINES
Revised January 2004
DOMESTIC WATER
GENERAL The purpose of this manual is to establish certain minimum
criteria for the design of water distribution mains in the
Cities' jurisdiction. It is intended to be used by the city staff
and private consulting engineers for all new utility
construction, replacements and modifications to the existing
systems. Unusual circumstances or special designs
requiring exception from the standards in this manual must
be approved by the City Engineer.
This manual is intended to be used in conjunction with all
current American Water Works Association (AWWA) and
"i xas Commission on Environmental Quality (TCEQ)
requirements. Additionally, all design should be in
accordance with the adopted version of the International
Fire Code. In the case of a conflict between this manual
and either or both of these other requirements, the most
restrictive will govern.
The criteria outlined in this manual are also intended to be
11:r_ �d in conjunction with the Cities' Unified Technical
;�;ifications.
Fcr the purpose of this manual, water distribution mains are
those mains of 18 inches in diameter or smaller. Larger
diameter mains are considered to be transmission mains
and are subject to additional design criteria and review.
Submittal The design engineer shall submit the following information
Requirements all water system designs:
• Plan and profile sheets containing all information
necessary to review, construct and inspect the
improvements. This shall include a traffic control
plan as applicable
• Water Design Report showing that the design of
the proposed improvements meets the
requirements of this manual (such as fire flows,
pressure, maximum run lengths, velocities, etc.)
• Copy of information provided to TCEQ in
compliance with TCEQ submittal requirements
(TAC290) for City records purposes. If the
project is exempted from TCEQ submittal, this
submittal to the City is also exempted.
Effective 8/04/2000 Page 1 DESIGN GUIDELINES
Revised January 2004
DOMESTIC WATER
Special Designs The City Engineer may, upon request, approve an
alternative design or construction methodology that differed
from the requirements in this manual if the City Engineer
determines that: (1) the alternative design or construction
methodology is equivalent to, or superior to, the
methodology required in this manual, and (2) the alternative
design or construction methodology is sufficient to ensure
public health and safety.
Connections A!I connections and service leads shall be installed to both
sides of all roads and alleys at the time of main line
ins�allation.
Service connections to 16" or larger water mains shall not
be allowed.
PIPE SELECTION: Pi -)es shall be selected, sized and designed to provide a
, -Z e, efficient and maintainable system for the conveyance
of domestic water from existing supplies and systems to
I / or existing users.
Pipe Materials Ti, following pipe materials may be specified for water
c'i_',ribution mains:
Effective 8/04/2000
Ductile iron pipe (DIP), pressure class 350 for sizes 6
through 12 inches and pressure class 250 for 18 inches
<<r. greater. Where excessive depths are encountered
than 10 feet), the design engineer shall specify an
z; thickness class to be approved by the City
L.:✓ineer.
P ;D,yvinyl chloride pipe (PVC) shall be SDR -21, ASTM
L..- pressure class 200 for 3 inch; pressure class 200
Di�14 (meeting AWWA C -909 standards) for sizes 6
through 12 inches; and pressure class 235 DR18 (meeting
VA C -905 standards) for pipe sizes 16 inches and
c t _ter. PVC pipe will not be permitted for aerial
c, casings. DI fittings shall be used with PVC pipe. Fittings
,.i be wrapped with eight -mil polywrap and sealed on the
with an approved tape.
'K' copper tubing shall be used for all service lines 2
i --, es and smaller.
;:,ages in pipe material shall only occur at valves or
with the exception of short replacements of water
needed to meet TCEQ separation requirements.
Page 2 DESIGN GUIDELINES
DOMESTIC WATER
Fir material information on pipe encasements refer to
"Encasements" on Page 8.
Pipe Sizing i'i i : s and pipe systems shall be designed to provide the
. ce criteria listed below.
Standard Pipe Sizes Tire standard pipe sizes for water distribution mains are 3,
6, 8, 10, 12, 16, 18, and 24 inches in diameter. As
c:;�� issed in the "Maximum Lengths for Water Mains"
Section, the smaller lines have restrictions for use.
andard size service lines within the right of way shall be
1, 11 iz, or 2 inch Type `K' Copper.
Looping Requirements ;rrr anent dead -end mains will not be allowed if looping
L.,,_ are available. This may require extending the
r lines beyond project limits.
Dead -end mains will be allowed at ends of cul -de -sacs
\.i,-:-, the only alternative is to loop lines down side lot lines
i. residential subdivisions. It is preferred to use 3 inch
c.;_:neter lines where maximum length as described in the
follo,ving section is not exceeded.
Maximum Lengths inch line may be allowed for permanent dead -end
for Water Mains i Uns not exceeding 500 feet. A 6 inch main may be
t .l.red up to a maximum of 1500 feet in length and must
connect at each end to an 8 inch or larger main and shall
I. no more than 2 fire hydrants or flushing points.
�, .,,ere it is not possible to meet this requirement, a 6 -inch
I;:ain may be extended to a maximum of 800 feet in length
�., J hall terminate with a fire hydrant or blow -off assembly.
. =Q rules shall dictate the number of services allowed on
Pressure /Flow ` �.Ler distribution mains shall be sized to meet all of the
Requirements : o requirements using a Hardy -Cross based analysis
i ,od or methods encompassed in software packages
as KY -Pipe, MikeNet, or Cybernet.
Design Flow L- tl, normal and fire flows are needed for meeting the
Calculation c sign criteria as established under Design Flow
r_ �. ,flation and System Design Criteria.
Effective 8/04/2000 Page 3 DESIGN GUIDELINES
Revised January 2004
_ DOMESTIC WATER
Normal Flow Or,e of the following three methods shall be used to
c.:; mine the normal flows by which the water system is to
Le designed.
Hourly Flow = (Average Daily Flow)(4)
• Method 1 — Fixture Count Determination
For small demand uses, the "fixture unit" method
of estimating peak water demand may be used in
accordance with the current duly adopted City
Plumbing Code.
For larger multi- family, residential, institutional,
commercial and industrial uses (over 500 fixture
units), Tables I and II should be used. Table I
shows a fixture unit value for various plumbing
fixtures and groups of fixtures. Table II shows the
probable peak rate of demand from systems
consisting of various numbers of fixtures.
Method 2 - Land Use Determination
Table III contains the normal flow demands that
are expected from a variety of uses.
The population factor for residential land uses is
2.67 persons per unit, which is then applied to the
actual number of units per acre, if known, or the
maximum units per acre from the current land use
plan if the property development is not yet
finalized.
The population factors for non - residential uses are
30 persons per acre for commercial, office and
institutional uses and 15 persons per acre for
Industrial uses.
• Method 3 - Gross Area Determination
In the absence of projected land uses, the
demands contained in Table IV may be used.
Fire Flows For the purposes of this manual, the following shall be used
for fire flow determinations unless greater flows are
required for hydrants near structures as per the adopted
International Fire Code.
Effective 8/04/2000 Page 4 DESIGN GUIDELINES
Revised January 2004
DOMESTIC WATER
1500 gallons per minute for public hydrants in single family
. Residential cr duplex residential areas (this flow may be split between
two adjacent fire hydrants within 1000 feet of each other).
2500 gallons per minute for public hydrants in commercial
• Commercial or multi- family areas (this flow may be split between two
adjacent fire hydrants within 600 feet of each other).
For onsite fire hydrants needed to obtain coverage of
• Other /Hi -Rise commercial or other high density uses, the design engineer
sh, consult the City Fire Marshal to obtain the specific fire
f,; ., demands for each project via the International Fire
C; ;Je.
Fire Flow System - I ! ,- following criteria shall be met on all new water
Design Criteria improvements.
Under normal conditions, provide residual pressures in
the area serviced by the system improvement to meet
- i - CEQ requirements, and at all times a minimum static
:Jessure of 35 pounds per square inch (psi).
Under fire flow conditions, provide the required fire flow
_.t the most hydraulically remote pairings of 2 adjacent
e hydrants in the system improvement in addition to
,e peak hourly flow. A residual pressure of no less
than 20 psi is required.
• rovide maximum velocities of not more than 12 feet
,- er second (fps) during fire flow in both existing and
cpcsed mains. This maximum velocity may be
- on a case by case basis depending on the
condition of the existing mains and if an engineering
rL;;_:ation has been performed.
• Conform to any area wide master plans, including over
:sizing for future development.
PIPE ALIGNMD Th- - 'e-ign of water distribution mains should provide for
ec-. cmical access for maintenance and repair, reliability of
and minimum disruption to surrounding facilities
c'":..g repair operations. In all cases water facilities shall
c�— , :.y ,. th TCEQ separation requirements.
Horizontal Layout T he centerline of water distribution mains constructed in
str rights -of -way shall be located as shown on the
Tye_ :: al Utility Location Detail (Figures 9 and 10 in the
Effective 8/04/2000 Page 5 DESIGN GUIDELINES
Revised January 2004
DOMESTIC WATER
c-'ti its section) and shall remain parallel to the right -of -way
/lien possible. Where possible, avoid placing water
line fittings and connections under paved and fenced areas.
Vertical Layout WL..er distribution mains should be laid to as straight a
as possible between cross street connections.
alignment should avoid high or low points between
c(_ _ , .�c ions. (See Flushing Design below)
.. Lite: distribution mains 12 inches in diameter and
sn. !!er shall have a minimum cover to finished surface of 4
Eighteen -inch diameter and larger mains shall have a
mi;,;.num cover of 5 feet to finished surface.
Flushing Design kf%".,tE;r distribution mains should have a means of a
r,...ik,wm cleaning velocity of 5 fps. Additionally, fire
1 - : . .., _ is shall be placed close to low point as practical.
F.:. , Fief valves and flushing appurtenances shall be placed
a: locations including an air release valve at all
1 L_ ,s for lines 12" and larger and on smaller lines where
t, ;. :)eal has an A of 10 or more.
k: N, - end lines shall be designed to allow adequate
f. �h:ng capability. A flushing assembly shall be provided
f a., lines 8 inches in diameter and smaller, while lines
c. . _ i .han 8" shall end at a fire hydrant.
Main Size Blow -off
3" 1
6" 2"
8" 2"
12" 4" or Fire Hydrant
18" 4" or Fire Hydrant
>_ 24" 6"
Deflections, Bends and - ri;;ximum deflection of pipe is to be restricted as
Curves s.. _ in Table V. Deflection for PVC pipe shall be made
t; 3 pipe barrel and not at the joint, while ductile iron
>!,all be deflected at the joints. Service connections
sl i, liid be limited in curved sections of pipe and when
r �3.sary shall require a tapped tee fitting.
b ,r.ds and fittings producing a change in alignment
Effective 8/04/2000 Page 6 DESIGN GUIDELINES
Revised January 2004
DOMESTIC WATER
c .`.cr han the deflection allowance of this manual shall
L✓ c::" ained to the pipe and blocked to undisturbed soil.
In <.udition, the pipe itself shall be restrained for a minimum
cf ;-ints on either side of the alignment change.
C_TvL� ±L.re of pipe shall be accomplished through multiple,
c,. , c :d deflections as described above. The minimum
ra'' us of curvature for water pipes is shown in Table V.
Separation from 7mtion of public water and wastewater mains will be
Wastewater Facilities c F: it with the current Rules and Regulations for Public
ystems of the TCEQ.
VALVES id, , ,._ .iniine valves 12" in diameter or less shall be gate
`..,_-s ^/hereas valves in lines greater than 12 inch shall be
L '_tc , valves.
Location and r; ,t should be located:
Spacing One (1) less than every leg of a cross connection.
the end of temporary dead -end lines, 70 feet from
end of the line for lines greater than 8" and 200
;,A for lines equal to and less than 8 ".
the end of a public line (unless there is a meter)
On 2 legs of a tee connection.
'.'airy 800 feet.
�Viiere possible, place valves in green areas and
id handicap ramps.
f; .!I be required at the point of connection of a new
11 _ ,i an existing main unless the existing main
1 n i -I ne valve within 200 feet of the connection.
VL_ .; call be placed at intervals not to exceed 800 feet
rc ss of the distance between intersections. Wherever
p- I - ;ey shall be located within 5 feet of a fire hydrant.
Ti ILy Engineer may require additional valves to prevent
un, _" ry disruptions of service. Fire hydrant lead
va! . to be positively anchored to the main line.
to be located so that no more than 4 valves are
I a isolate a section of main.
Effective 8/04/2000 Page 7 DESIGN GUIDELINES
Revised January 2004
DOMESTIC WATER
Tapping Sleeves Ta i-ri Sleeves and valves will be allowed unless size on
siz - r ections are needed, and then Tee connections will
b< ;red. A Tee connection may also be required where
ri. ire valves are needed.
FIRE HYDRANTS: Fir , are to be located at street intersections or as
C . to an intersection as possible. Hydrants should not be
L A vrithin the intersection curb return radius.
I,�' ediate fire hydrants should be located near property
l;.. nsions and no closer than 5 feet to any service line.
Residential Fire !. , c. - �t tial areas fire hydrants should be placed within
Hydrants ti -or" -way in the vicinity of the common lot lines.
Pu fire hydrants shall be spaced 1000 feet apart in
_.n ily districts at locations so that structures (or
�.. ed lot) shall not be more than 500 feet from a fire
I, t as measured along the right of way of a public
fire hose is laid off the fire truck.
!, I I :ntial areas with lots sizes of 5 acres or greater, fire
I, r ; i: ,a y be spaced at 1,500 feet along the water main
S�' structures shall not be more than 750 feet from a
f r: drant as measured along the right of way of a public
fire hose is laid off the fire truck.
Non - Residential P ill hydrants in districts other than single family
Fire Hydrants C. s ,all be installed as per the Cities Fire Codes.
)proval by the City Engineer, the installation of
>.;I public fire hydrants in such districts may be
�. .nd required as a condition of the building
F j or structures.
!. , ;ce with TCEQ, fire hydrants shall not be placed
c. . , ,. - in 9 feet horizontally and vertically from any
�. main or appurtenance. All fire hydrants shall
_..?d to a minimum 6 inch water main.
is assary to place a fire hydrant in a proposed
(- , cation, the sidewalk shall be widened or
!
ti-) maintain the required sidewalk width.
i. - a,)Ie for fire hydrants to be placed within 150 feet
Iepartment connection on the structure.
Page 8
DESIGN GUIDELINES
Effective 8/04/2000
Revised January 2004
DOMESTIC WATER
CROSSINGS:
Effective 8/04/2000
Revised January 2004
is.ribution mains that cross state highways must
c i to the Cities' Unified Technical Specifications and
ti quirements of the Texas Department of
r' ±ion (TxDOT). Mechanical bores are required for
1,1 ngs of existing streets.
k . ' stribution mains that cross railroads must conform
L, Cities' Unified Technical Specifications and the
I ar - , nts of the railroad company whose right -of -way is
sed.
i distribution mains crossing creeks or drainage
C, regulated by FEMA shall require encasement.
L ,,de crossings are preferred; however aerial
Ci may be considered. Thrust restraint shall be
I.. at points of transition from buried to exposed pipe
Z. I mges in alignment of exposed pipe. Air release
.II be provided at the high point of all crossings.
le crossings of creeks and drainage channels
I I a minimum cover of 4 feet below the flowline at
t of construction. All below grade crossings
_ encasement shall be encased in steel
c .t pipe and all ends shall be capped and sealed.
ij shall be carried into the bank a distance that
nsider changes in the creek channel. This
C. ould usually be beyond the high bank such that if
ured a 1:1 slope from the high bank away from
?i - �I, the casing would terminate at that location.
Page 9
DESIGN GUIDELINES
DOMESTIC WATER
ENCASEMENTS: S, t �ider pipe shall be used for all encasement pipe.
C . asement pipe material may be used per TCEQ
r , nts and City Specifications. Carrier pipes sized
r ic or less shall use an encasement pipe with a wall
t no less than 3/8 -inch. For larger carrier pipes, a
V. i ' ness of no less than 1/2 -inch shall be used.
C ` encasement pipe may be required in special soil
c -)l
F :asement will be required for all water mains
C' any street classified as major collector and greater
i. , new streets regardless of method of installation.
not apply to services. Special field conditions
r. re an alternate method of installation, which must
L - by the City Engineer.
'r ..sement pipe shall sized in accordance with the
l" echnical Specifications and shall extend 2 feet
L he back of both curbs on the street. Ends of
c ent pipes shall be sealed to prevent the intrusion
:tion of groundwater.
pipes will be supported by casing spacers in
with the specifications and details, and shall
F: is restrained by an approved method that will allow
t. �e ral of the carrier pipe from the encasement pipe in
II rection by means of tension on the carrier pipe
i.
EASEMENTS: gins that are not proposed to be constructed
and parallel to public rights -of -way shall be in
c `s of not less than 15 feet in width. Water mains
a "_;Tied deeper than 8 feet shall be in easements
r, "an 20 feet. When unavoidable for both water
ewater mains to be located within the same
t: the width shall not be less than 30 feet unless
i is buried deeper than 8 feet, in which case,
c width shall be increased. Where water lines will
, nt to building structures, easement width shall be
dent must be located such that the centerline of
t e is no closer than 5.5 feet to the closest edge
anent.
Page 10
DESIGN GUIDELINES
Effective 8/04/2000
Revised January 2004
DOMESTIC WATER
ins constructed adjacent to TOOT maintained
r shall be located in the utility accommodation
vided by TOOT. If there is no utility
lation zone, or if the zone is occupied, then the
shall be installed in a separate easement (min.
' jacent to the right -of -way.
Effective 8/04/2000
Revised January 2004
Page 11 DESIGN GUIDELINES
DOMESTIC WATER
TABLE I
FIXTI' — .E UNITS PER UNIT OR GROUP
FIXTURE TYPE
FIXTURE UNIT VALUE
LOAD FACTOR
One Bathroom Group - tank r
6
water closet, tub or shower, I ..
Bathtub (with or without shov'cr)
2
Dishwasher (domestic)
2
Kitchen Sink
1
-with food grin
2
Lavatory
2
Shower Group, per he
3
Sinks, commercial
- Surgeon's
3
- Flushing Rime (with ;ve)
8
- Service
3
-Pot (scullery, etc.
4
4
4
Urinals
Washer, clothes
Water Closets
-Tank Operated
4
-Valve Operated
8
Effective 8/04/2000 Page 11 DESIGN GUIDELINES
Revised January 2004
DOMESTIC WATER
TABLE II
PEAK WATE DEMAND BASED ON FIXTURE UNITS
FIXTURE UNIT.'
PEAK DEMAND (GPM)
500
125
1000
215
15
300
2000
330
?500
380
3000
420
3�:v0
490
400
560
4500
630
50
700
6000
840
7000
980
3000
1120
�?
1260
1 "-1 0
1330
TABLE III
L —AGE WATER DEMANDS
Residential
Commercial
-Office
- Retail
-Hotel /Mot
Institutional
- Schools
- Hospitals
Indust
Effective 8/0412000
Revised January 2004
Page 12 DESIGN GUIDELINES
DOMESTIC WATER
NOix
TRIBUTARY AR
A
Le tha 25;.
250 -300
300 -500
500 -1500
150((, -3000
More than 3C:
Effective 8/04/2000
Revised January 2004
TABLE IV
oVATER DESIGN DEMANDS
TABLE V
''ADIOS FOR WATER PIPE
— CLASS 200
DESIGN DEMAND
. .d. per acre
20 -ft. Joint
7000
220 ft
6500
400 ft
5500
600 ft
5000
4500
4000
TABLE V
''ADIOS FOR WATER PIPE
— CLASS 200
DUCTILE IRON
20 -ft. Joint
(18-ft.
220 ft
400 ft
400 ft
400 ft
600 ft
400 ft
Page 13
DESIGN GUIDELINES
BR`. .P: ALLEGE STATION
UNIFC RC `.SIGN GUIDELINES
. ►nary Sewer
SANITARY SEWER
able of Contents
General 1
SubmittalRequirem _ ............................................... ............................... 2
SpecialDesigns......... ............................................... ............................... 2
Connections............. ............................................... ............................... 2
Pipe Selection
Pipe Materials...........
Pipe Sizing ...............
Standard Pipe Size:
Minimum Pipe Sizes.
Flow Requirei»ents..
Flow CalcuiZ.;L,on ......
System Design Crit_
............................................ ............................... 2
............................................. ............................... 3
............................................ ............................... 3
............................................ ............................... 3
.............................................. ............................... 3
................................................. ............................... 3
............................................... ............................... 5
Pipe Alignment
HorizontalL , out...... _ ............................................ ............................... 6
VerticalLayuL;t......... .......................................... ............................... 6
Separatior, From 1 ities ................................. ............................... 6
Manholes............................ ............................................ ............................... 7
RightOf Way Cr,c ::, igs . ............................................... ............................... 7
Encasements..................... .......................................... ............................... 8
Easements......................... ........................................... ............................... 9
Tables
Table I — Fi;aLre U.. it Or Group ..................... ............................... 10
Table II — Pc �- lk a i =lows Based On Fixture Units ........................ 11
Table III — Av -:rage 'ater Generations ............... ............................... 11
Table IV - -- ::, ,sign Flows ....................... ............................... 12
Effective 8/04/2000 DESIGN GUIDELINES
Revised January 2004
Submittal
Requirements
SANITARY SEWER
engineer shall submit the following information
'ewater system designs:
Jan and profile sheets containing all information
accessary to review, construct and inspect the
, inprovements. This shall include a traffic control
!an as applicable
_;igineer may, upon request, approve an
_ _<';gn or construction methodology that differed
f . uirernents in this manual if the City Engineer
G that: (1) the alternative design or construction
rr is equivalent to, or superior to, the
n squired in this manual, and (2) the alternative
d :, ,struction methodology is sufficient to ensure
f- Id safety.
opy of information provided to TCEQ in
c;ripliance with TCEQ submittal requirements
;;C317) for City records purposes. If the project
exempted from TCEQ submittal, this submittal
the City is also exempted.
Special Designs
Connections
PIPE SELECTION,
Pipe Materials
_.�,iewater Design Report showing that the
sign of the proposed improvements meet the
- �w requirements of this manual.
, 3sign shall follow acceptable engineering
- e reviewed by City staff.
i .al connections and service leads shall be
il both sides of all roads and alleys at the time of
n aliation.
.lions shall be tied into the main line.
ba designed to provide a safe, efficient and
-- for the collection of wastewater from its
of generation to the existing collection and
i slams.
i;ig pipe materials may be specified for
V ; � ilection, and force mains as well as service
li City's rights -of -ways.
Effective 8/04/2000
Revised January 2004
'age 2
DESIGN GUIDELINES
SANITARY SEWER
L p ire (DIP), pressure class 350 for sizes 6
t' :;`yes and pressure class 250 for 18 inches and
c )rcu mains shall be DIP, pressure class 350 or
1 pressure class 160 and shall not be greater in
riches.
f icri Je pipe (PVC) and all fittings shall be SDR26-
i ';4 in sizes 6 through 15 inches and SDR26-
T f 1 for larger sizes. PVC pipe will not be
r r aerial crossings.
:_. ormation on pipe encasements refer to the
s section of this document.
;;,e material shall only occur at manholes with
t if short replacements of sewer lines needed
t - 6eparation requirements.
Pipe Sizing systems shall be designed to provide the
listed below.
Standard Pipe Sizes I'ipe sizes for wastewater collection mains are
nd 18 inches in diameter. Standard service
be more than 150 feet in length and shall
eanout at the property line.
Minimum Pipe Sizes n a",ewater pipe sizes shall be as follows:
:,:on Mains — 6 inches
ntial Service Leads — 4 inches
�rcial Service Leads — 6 inches
Flow Requirements ection mains shall be sized to meet all of the
:?ments using an analysis method based on
Flow Calculation following three methods shall be used to
_.eak hourly flows by which a new wastewater
fringes of the existing system is to be
c new systems being developed within the
consult the City of Bryan Wastewater
;r design criteria). In each method, the
_.ins apply:
Effective 8/04/2000 'age 3 DESIGN GUIDELINES
Revised January 2004
SANITARY SEWER
F'. , w = (Average Daily Flow)(4)
1 - f=ixture Count Determination
ti- family residential, institutional, commercial
ustrial uses, the "fixture unit" method of
,!,g peak wastewater generation may be used
dance with the current duly adopted City
Code. Table I shows a fixture unit value for
)lumbing fixtures and groups of fixtures.
shows the probable peak rate of flow
n from systems consisting of various
of fixture units.
Land Use Determination
Effective 8/04/2000
Revised January 2004
contains the average daily flow per capita to
-fled from a variety of uses.
,lation factor for residential land uses is 2.67
per unit, which is then applied to the actual
,;f units per acre if known, or the maximum
I ,r acre from the current land use plan if the
development is not yet finalized.
.:lation factors for non - residential uses are 30
per acre for commercial, office and
,al uses and 15 persons per acre for
. uses.
Toss Area Determination
d the boundaries of the current City of Bryan
ter Master Plan and /or in the absence of
land uses, the average daily flow per acre
1 in Table IV may be used.
'age 4 DESIGN GUIDELINES
SANITARY SEWER
t - idistorical Data
is information regarding average daily flows
'irticular type of development that is more
than the data from the other methods, the
iformation may be used. Please discuss this
City prior to using so as to ensure the
)n is acceptable.
System Design Criteria \ ins and collection lines shall be designed to
c _ daily load estimated from the tributary areas
- �veloped to the current land use plan.
C of peak loadings shall be based on an
density and character of the land uses in the
t. :Id the probable wastewater generation from
t
.MUM / MAXIMUM PIPE SLOPES
khan 36 inches in diameter, the slope may be
Manning's formula to maintain a minimum
than 2.5 feet per second when flowing full
i velocity less than 8 feet per second when
using a Manning's °n" of 0.013.
Effective 8/04/2000
Revised January 2004
'age 5 DESIGN GUIDELINES
SLOPE ( %)
MINIMUM
MAXIMUM
0.50
12.30
0.40
5.30
0.30
3.90
0.25
3.10
0.20
1.80
0.20
1.20
0.20
0.90
0.20
0.70
khan 36 inches in diameter, the slope may be
Manning's formula to maintain a minimum
than 2.5 feet per second when flowing full
i velocity less than 8 feet per second when
using a Manning's °n" of 0.013.
Effective 8/04/2000
Revised January 2004
'age 5 DESIGN GUIDELINES
SANITARY SEWER
should be consistent between manholes and
�ductions in velocity.
PIPE f the wastewater collection mains should
ALIGNMENT: nical access for maintenance and repair,
r ' ation and minimum disruption to surrounding
repair operations. In all cases wastewater
S s - mply with TCEQ requirements.
Horizontal Layout Tins and collection lines should be laid straight
soles and at a uniform distance from the right
of wastewater mains and collection lines
street rights -of -way shall be located as shown
utility Location Detail (Figures 9 and 10 in the
sE , on the opposite side of the street from the
is
Vertical Layout &Jmum cover for sanitary sewer pipe shall be
as measured from the outside top of pipe
fished ground or pavement surface elevation.
;essary to reduce the cover, the design shall
iron pipe and may include cement stabilized
y covers less than 3.5'. Any shallow depth
! be discussed with the City Engineer.
a .ins and laterals should be laid on a straight
manholes while avoiding excessive depths.
.L i)e shown on construction plans at 100 -foot
L all manholes and match marks. Elevations
;fated to the nearest 0.01 foot.
,ins and collection lines must be constructed
.. hich will insure gravity flow in service
adjacent properties. In general, this is
- )li y setting a 2% grade from the centerline of
nain to a point one (1) foot below floor
building line of the structure being served.
i must have a minimum cover of 2 feet at its
)e 1t including roadside drainage ditches where
o` ublic water and wastewater mains will be
Separation From
, k e current Rules and Regulations for Public
Water Facilities ji the TCEQ.
Effective 8/04/2000 Je 6 DESIGN GUIDELINES
Revised January 2004
SANITARY SEWER
GENERAL: 1" � se of this manual is to establish certain minimum
t design of wastewater collection mains in the
C - isdiction. It is intended to be used by the city staff
ate consulting engineers for all new utility
C gin, replacements and modifications to the existing
S Unusual circumstances or special designs
rc exception from the standards in this manual must
ti A by the City Engineer.
,al is intended to be used in conjunction with all
C - ,erican Water Works Association (AWWA) and
oinmission on Environmental Quality (TCEQ)
r_ ts. In the case of a conflict between this manual
or both of these other requirements, the most
r :ill govern.
- i outlined in this manual are also intended to be
.jnjunction with the Cities' Unified Technical
Dns.
ose of this manual, wastewater collection mains
,ains of 18 inches in diameter or smaller. Larger
C. wins are considered to be interceptor or
t n mains and are subject to additional design
review.
F stewater collection systems that accept flows
,g upstream sewers shall be designed to
ate all flows generated by the upstream service
e existing upstream sewers may experience
flows greater than the peaks utilized in the
%v sewers. The peak flow rates (particularly the
i. low rates) for each existing subsystem is highly
Consult with the City Engineering Services
to confirm the proper peak flow rates to be used
fc :sting upstream wastewater collection system.
T s- wastewater collection system design shall
,ew of all existing downstream sewers receiving
e proposed sewers to verify that flows generated
rc;josed wastewater collection system do not
:act the performance of the downstream
Page 1
DESIGN GUIDELINES
Effective 8/04/2000
Revised January 2004
SANITARY SEWER
wi!' be required at changes in horizontal
MANHOLES: chi ,ges in grade, changes in pipe size or and
'tf ,her wastewater mains or collection lines.
be required at the junctions where service
t g new sewer lines into existing manholes,
ride a point of connection.
_Im distance between manholes shall be as per
'ie of TCEQ.
in the size of a wastewater main or
curs without a change in grade, the inside
:) elevations will be matched in the manhole.
-aces between pipes at a manhole may
Whole (see TCEQ for more information).
of a main or collection line, the line shall be
w i a manhole or clean out as per TCEQ
an extension is anticipated, a plugged stub-
,le joint with a clean -out is required.
be constructed of fiberglass or concrete.
ale may be cast in place or precast.
oles may only be used in non - structural
,c. `call be as follows:
! ameter Main Size
< 18 in.
>_ 18 in. <30 in.
>_36 in.
ction mains that cross state highways must
RIGHT -OF -WAY th Cities' Unified Technical Specifications and
CROSSINGS: of the Texas Department of Transportation
ection mains that cross railroads must
"ties' Unified Technical Specifications and
of the railroad company whose right -of -way
Effective 8/04/2000
Revised January 2004
e 7 DESIGN GUIDELINES
SANITARY SEWER
ollection mains crossing creeks or drainage
must support the elevated sections of such
ossings of creeks and drainage channels
imum cover of 3.5 feet below the flowline at
ruction or shall be constructed of ductile iron
e ption is to adequately protect the pipe from
y concrete encasement or other approved
, e specific information in Specification 400.
,ings of existing streets unless otherwise
City Engineer.
)e shall be used for all encasement pipe.
ENCASEMENTS: !,t pipe material may be used per TCEQ
J City Specifications. Carrier pipes sized 30
all use an encasement pipe with a wall
than 3/8 -inch. For larger carrier pipes, a
no less than 1/2 -inch shall be used.
i�ment pipe may be required in special soil
to look into type of encasement pipe)
t will be required for all wastewater
:;rossing any existing street and on new
is major collector or greater . This does
ices. Special field conditions may require
od of installation, which must be approved
per.
diameter shall be twice the outside
r er pipes sized from 6 inches up to 12
�s of carrier pipe material. Ductile iron
_,d 12 inches and greater shall have an
size 12 inches larger than the outside
,arrier pipe. PVC carrier pipes sized 12
�r shall have an encasement pipe size 10
the outside diameter of the carrier pipe.
s shall extend 2 feet beyond the back of
street. Ends of encasement pipes shall be
ent the intrusion and collection of
Effective 8/04/2000
Revised January 2004
e 8 DESIGN GUIDELINES
SANITARY SEWER
will be supported by Cascade carriers (or
that will allow the removal of the carrier
Incasement pipe in a single direction by
i i on the carrier pipe only.
EASEMENTS: ; constructed outside of public rights -of -way
ents of not less than 15 feet in width unless
is deeper than 4 feet, in which case,
shall be increased to 20 feet. If both water
mains are located within the same
r,dth shall be not less than 20 feet unless
iried deeper than 14 feet, in which case,
hall be increased to 30 feet.
ust be located such that the centerline of
t ne is no closer than 5.5 feet to the closest
nent.
ction mains constructed adjacent to TOOT
i vays shall be located in a utility easement.
e allowed within a utility accommodation
TOOT on a case by case basis.
Effective 8/04/2000
Revised January 2004
ge 9 DESIGN GUIDELINES
3LE
FIX �R UNIT OR GROUP
FIXTURE
One Bathroom Group — to
water closet, tub or shows
Bathtub (w o r without sl
Dishwater (do m e stic)
Kitchen Sink
With food grinder
Lavatory
Showe G p er head
Sinks, commercial
- Surgeon's
- Flushing Rim (witl
- Service
-Pot (scullery, etc.)
U rin a ls
Washer, clot
Water Closets
-Tank Operated
-Vale_ Operated
FIXTURE UNIT VALUE
LOAD FACTOR
6
2
2
1
2
2
3
3
8
3
4
4
4
4
8
PEAK WASTE
FIXTURE UC.
500
1000
1500
2000
25
v V
00
4000
4500
500
6C 00
1 � 0
Residentia
Commercial
- Office
- Retail
-Hotel /Motel
Institutional
Industri
3LE II
1S BASED ON FIXTURE UNITS
PEAK DEMAND (GPM)
125
215
300
330
380
420
490
" I f
•:f
1120
12
1330
3LE III
:TER GENERATIONS
AVERAGE FLOW
GPD /CAP
100
50
25
150
35
200
50
'LE IV
Y DESIGN FLOWS
TRIBUTr,RY f
DESIGN DEMAND
(A�, L s
(g.p.d. per acre)
Less than 2-
7000
250 - 300
6500
300 - 50C
6000
50C -
-j
5500
OC
5000
20r-Y .. _ .
4 500
gore
4000
V 9
BRY.Al -
nAw
u
-EGE STATION
:"]'N GUIDELINES
-:) s a ry
GLOSSARY
ADA - in Disabilities Act
Alley - )r public right -of -way which provides a
,ry means of vehicular access to abutting
and which is used primarily for vehicular
the rear or side of properties which otherwise
a public street.
City micipality of the City of Bryan.
City Engineer of administrative employee of Engineering
or his /her duly authorized representative(s).
City Manag --: ` administrative employee of the City Council,
r duly authorized representative(s).
Collection Line , water line which receives only the flow from
property.
Collection M.-.111 :water line which receives the flow from
property and from one or more collection
mains.
Collector S.. act I.Vhich primarily serves vehicular traffic from
eets and minor collectors to arterials. A
r may also provide very limited access to
;properties if approved by the City.
Conduit - �d device for conveying flowing water.
Critical Fea:re ral and readily identifiable part of an
cture system, without which the effect(s)
:.y the entire system would be compromised.
Design Engineer :nsed Professional Engineer.
Developer /Cjilder partnership, or corporation engaged in the
lent of land and /or building of structures and
r,led by exemption sections of this manual.
Developmc; -made change to improved or unimproved
including but not limited to buildings or
uctures, mining, dredging, filling, grading,
excavation, drilling operations, grading, or
Effective 8/0 DESIGN GUIDELINES
Revised January 2003
GLOSSARY
Environmental Protectic ;i States Environmental Protection Agency,
Agency (E" ., _,Al office thereof, any federal department,
)r commission that may succeed to the
of the EPA, any duly authorized official of
- ach successor agency.
Extra- Territcral Jurisdic :orporated area, not a part of any other city,
(E.T.J.) ;ontiguous to the corporate limits of the City
the outer boundaries of which are
from the extremities of the corporate limits
outward for such distances as may be
A the Texas Municipal Annexation Act, in
a, within the terms of the act, the City may
violation of it's subdivision control chapter.
Hydraulic Gradient oresenting the pressure head available at
point within the drainage system.
Interceptor ,ter line which receives flow from collection
,'or mains but not from any abutting
Licensed Professional who has been duly licensed by the Texas
Engineer (PE) Professional Engineers to engage in the
)f engineering in the State of Texas.
Local Juris ..:ot;on governing body in which the construction
;e (known also as `the City').
Local Strc�_ _ iich primarily serves vehicular traffic to
.sidential properties. A local may also
,,sited access to commercial properties if
b the City.
Major Arterial Street which carries high volumes of vehicular
the general range of 20,000 VP to 60,000
% is intended to move traffic in, out or
City.
Minor Ac ...i Strect .. h1ch carries high volumes of vehicular
general range of 5,000 VP to 30,000
.ich is intended to move traffic around the
Effective 8104L DESIGN GUIDELINES
Revised January 2 ;
GLOSSARY
Minor Collector Street .vhich primarily serves vehicular traffic from
;ets to collectors or arterials. A minor
may also provide limited access to abutting
if approved by the City. Additionally, the
'�ntified as collectors on the Thoroughfare
be designed as minor collectors only if
'�y the City.
Operator or persons who, either individually or
aher, meet the following two criteria:
y have operational control over the site
.cifications (including the ability to make
c:ifications in specifications); and
�y have the day -to -day operational control
ti,ose activities at the site necessary to
re compliance with plan requirements
Hermit conditions.
Other Munic .:I Ordinar. - �s such as, but not limited to, zoning,
i, and building.
Owner ,n �::iho owns a facility or part of a facility.
Parkway between the back of curb and right -of -way
�.rea is usually maintained by the property
)rivate association.
Pavement th In the portion of the surface of the street
for traffic: where curbs are used, it is
between the back of curbs.
Qualified P rsonnel Nhj possess the appropriate competence,
A ability (as demonstrated by sufficient
training, experience, and /or, when
any required certification or licensing) to
pecific activity in a timely and complete
insistent with the applicable regulatory
As and generally- accepted industry
or such activity.
Effective 8/04/2 ,33 DESIGN GUIDELINES
Revised January 2C -1 3
Fj,RYAV _GE STATION
N GUIDELINES
sary
GLOSSARY
ADA i Disabilities Act
Alley r public right -of -way which provides a
, - y means of vehicular access to abutting
and which is used primarily for vehicular
'he rear or side of properties which otherwise
i public street.
City icipality of the City of Bryan.
City Engineer ;f administrative employee of Engineering
. or his /her duly authorized representative(s).
City Mana �dministrative employee of the City Council,
Duly authorized representative(s).
Collection U,1w , ter line which receives only the flow from
property.
Collection l A ,mater line which receives the flow from
property and from one or more collection
gins.
Collector : -.. ; et i, )ich primarily serves vehicular traffic from
,::ts and minor collectors to arterials. A
may also provide very limited access to
Dperties if approved by the City.
Conduit A device for conveying flowing water.
Critical Fea'Lre al and readily identifiable part of an
`ure system, without which the effect(s)
the entire system would be compromised.
Design En i, er �d Professional Engineer.
Developer; 7 'Ider partnership, or corporation engaged in the
it of land and /or building of structures and
, d by exemption sections of this manual.
Developw - .ade change to improved or unimproved
, including but not limited to buildings or
_ - tures, mining, dredging, filling, grading,
�Ycavation, drilling operations, grading, or
Effective 8 /C. ; . — DESIGN GUIDELINES
Revised Januu; ��
GLOSSARY
Environme,i;al Protectic States Environmental Protection Agency,
Agency ( office thereof, any federal department,
commission that may succeed to the
the EPA, any duly authorized official of
successor agency.
Extra -Te Jurisdic:i , area, not a part of any other city,
(E.T.J.) tiguous to the corporate limits of the City
the outer boundaries of which are
- om the extremities of the corporate limits
outward for such distances as may be
the Texas Municipal Annexation Act, in
within the terms of the act, the City may
olation of it's subdivision control chapter.
Hydraulic Grz dient ,senting the pressure head available at
Ant within the drainage system.
Intercept r �r line which receives flow from collection
mains but not from any abutting
Licensed Professional .o has been duly licensed by the Texas
Engineer (PE) ofessional Engineers to engage in the
.ngineering in the State of Texas.
Local )verning body in which the construction
;known also as 'the City').
Local Str :ch primarily serves vehicular traffic to
;idential properties. A local may also
'. - access to commercial properties if
the City.
Major Arter t.: 'scot ',ch carries high volumes of vehicular
general range of 20,000 VP to 60,000
ch is intended to move traffic in, out or
ity.
Minor At, Street ,;ch carries high volumes of vehicular
general range of 5,000 VP to 30,000
`h is intended to move traffic around the
Effective 810412,
Revised January
DESIGN GUIDELINES
GLOSSARY
Minor Col' :c r Street ch primarily serves vehicular traffic from
to collectors or arterials. A minor
y also provide limited access to abutting
approved by the City. Additionally, the
`ified as collectors on the Thoroughfare
e designed as minor collectors only if
the City.
Operator or persons who, either individually or
or, meet the following two criteria:
;ave operational control over the site
cations (including the ability to make
cations in specifications); and
nave the day -to -day operational control
_ se activities at the site necessary to
- e compliance with plan requirements
J )ermit conditions.
Other Mur,ic:, ,:1 Ordinar, such as, but not limited to, zoning,
ind building.
Owner .ho owns a facility or part of a facility.
Parkway meen the back of curb and right -of -way
ea is usually maintained by the property
irivate association.
Pavemen' ,.:_�� the portion of the surface of the street
traffic: where curbs are used, it is
tween the back of curbs.
Qualified ' ' e, .;cnnel possess the appropriate competence,
ability (as demonstrated by sufficient
i, :raining, experience, and /or, when
ny required certification or licensing) to
�_ecific activity in a timely and complete
sistent with the applicable regulatory
and generally- accepted industry
such activity.
Effective 8/G:I� 0 DESIGN GUIDELINES
Revised Janua11" ..
GLOSSARY
Recreat; a: °1 YliL cle which is (i) built on a single chassis;
ire feet or less when measured at the
ontal projections; (iii) designed to be
A : or permanently towable by a light duty
I designed primarily not for use as a
swelling but as temporary living quarters
- ) ,- ,al, camping, travel, or seasonal use.
Registers L ,n6scape has been duly licensed and registered
Architec' �) _A) landscape architecture by the Texas
iitectural Examiners.
Rural Col' c jr Street : ETJ of the City which primarily serves
fic from locals to arterials. A rural
provide limited access to abutting
F roperties if approved at the time of
ie City and County. Construction and
of the rural collectors are generally
sdiction of the County.
Rural Loc, l " reet 3 ETJ of the City which primarily serves
is to abutting residential properties. A
iay also provide limited access to
roperties if approved at the time of
City and County. Construction and
oc r,f the rural locals are generally under
:n of the County.
Sanitary -r (or Sewc , i of pipes, conduits, and other
which carry industrial and domestic
their sources, whether treated or
',ie sewage treatment plant serving the
.'hich stormwater, surface water, and
re not intentionally admitted).
Service L ac: - ; ne extending from a collection line or
;vate property or easement line making
'o the private service, including the
lout(s).
Site :ter area where any facility or activity is
:Jed or conducted, including adjacent
- nnection with the facility or activity.
TAS Aity Standards
Effective 8 /C ;, DESIGN GUIDELINES
Revised January '. jC',
GLOSSARY
Use for which a building or other structure
land may be designed, arranged,
ntained, or occupied; or any activity,
,usiness, or operation carried on, or
be carried on, in a building or other
n a tract of land.
Use Pcro,; . required before any use may be
Variance to a person from the requirements of
hen specific enforcement would result
.ry hardship. A variance, therefore,
ruction or development in a manner
libited by this manual.
Violat'mil a structure or other development to be
t with this manual.
Effective 8/04/2 .
Revised Januar. 103
DESIGN GUIDELINES
Ii�,5`03
Enp_ineerin2 Related
1. The City should adopt written Design Standards that are followed consistently by City staff.
2. Staff should receive ongoing training in City Standard Specifications and applicable regulations to
ensure that requirements are interpreted consistently among city departments.
3. Engineering should establish a procedure or protocol for notifying departments involved in
development review when a field change is made.
4. The City should adopt a standard policy that requires developers to submit "as- built" plans to the City
before a Letter of Completion is issued.
5. The City should develop a procedure to ensure that warranty items that are identified as requiring
repair are corrected.
6. The City should modify current procedures to require a Letter of Completion before work orders are
executed.
7. The City should improve its enforcement of requirements that are based upon City ordinances or other
established laws or regulations.
Development Services Related
1. Development Services should review their 5 -day turnaround policy to determine if that is sufficient
time to thoroughly review all construction plans.
2. City engineers reviewing development plans should conduct a more thorough review to minimize field
changes, even if it extends past the 5 -day turnaround time.
3. Development Services, Public Works, and College Station Utilities should create a checklist that lists
requirements developers must meet to obtain a temporary Certificate of Occupancy.
4. Regular meetings between city departments involved in the development review process should be
established and implemented.
5. Staff members should be involved in the fact - finding phase of developer complaint resolution.
6. Written guidelines with approximate timeframes for completion of the development review process
should be provided at pre - application conferences, or upon the developer's initial contact with
Economic Development.
7. Additional guidelines should be established for redevelopment projects, specifically infrastructure
guidelines.
College Station Utilities Related
Economic Development Related
1. Development Services should be included in the economic development process as soon as a site is
identified.
City Management Related
1. City management should organize all engineering and infrastructure inspections as one department
under a director that reports to the City Manager /Assistant City Manager.
2. City management should identify all gaps in inspections, assign appropriately, and provide necessary
resources to perform inspections.
3. City engineers should be organized in one department reporting to one person. This department should
be a department separate from Public Works and Development Services, thus fostering the expectation
that the engineering function will respond consistently throughout the development review process.
4. The City Manager should designate and notify applicable departments of those development projects
that need to be expedited.
5. The new Design Standards should delegate authority to the City Manager or his delegee to make minor
modifications to the City's Design Standards.
(11) There is a lack of creative /discussion sessions among the departments involved in the
review process.
(12) Communications and concerns among the departments involved in the review process are
not always shared and ultimately resolved.
(13) Conflicting interpretations of City of College Station Standard Specifications or other
regulations exist among City departments involved in the development process.
Consistency in Decision-MakinE
(14) Staff perceives that development complaints to City management are sometimes resolved
without staff input.
(15) On occasion staff issues a Certificate of Occupancy before the City accepts the
infrastructure.
(16) There is a lack of City Design Standards.
(17) Staff sometimes makes requirements of developers that are not specifically written in the
City's ordinances.
(18) Existing guidelines for redevelopment are minimal.
Public Perception
(19) There are no current written development process guidelines for developers or Economic
Development clients.
Recommendations
This report contains a variety of recommendations to address the identified shortcomings
including:
City management should organize all engineering and infrastructure inspections as one
department under a director that reports to the City Manager /Assistant City Manager.
n Development Services should review their 5 -day turnaround policy to determine if that is
sufficient time to thoroughly review all construction plans.
(3) Development Services engineers reviewing development plans should conduct a more
thorough review to minimize field changes, even if it extends past the 5 -day turnaround
time.
I (4) Staff should receive ongoing training in City Standard Specifications and applicable
regulations to ensure that requirements are interpreted consistently among City
departments.
(5) Public Works engineering should establish a procedure or protocol for notifying
departments involved in development review when a field change is made.
(6) City management should identify all gaps in inspections, assign appropriately, and provide
—� necessary resources to perform inspections.
(7) The City should adopt a standard policy that requires developers to submit "as- built" plans
to the City before a Letter of Completion is issued.
8) The City should develop a procedure to ensure that warranty items that are identified as
requiring repair are corrected.
(9) Development Services, Public Works, and College Station Utilities should create a
checklist that lists requirements developers must meet to obtain a temporary Certificate of
Occupancy.
2
(10) The City should modify current procedures to require a Letter of Completion before work
orders are executed.
City engineers should be organized in one department reporting to one person. This
department should be a department separate from Public Works and Development Services,
thus fostering the expectation that the engineering function will respond consistently
throughout the development review process.
(12) The City Manager should designate and notify applicable departments of those
development projects that need to be expedited.
(13) Development Services should be included in the economic development process as soon as
a site is identified.
�14) Regular meetings between City departments involved in the development review process
should be established and implemented.
(15) Staff members should be involved in the fact - finding phase of developer complaint
resolution.
(16) Written guidelines with approximate timeframes for completion of the development review
process should be provided at pre- application conferences or upon the developer's initial
contact with Economic Development.
- a (17 The City should adopt written Design Standards that are followed consistently by City
' staff.
7 (18) he City should improve its enforcement of requirements that are based upon City
ordinances or other established laws or regulations.
(19) The new City Design Standards should delegate authority to the City Manager or his
delegee to make minor modifications to the City Design Standards.
I & I (20) Additional guidelines should be established for redevelopment projects, specifically
infrastructure guidelines.
CONCLUSION
Through the team process it became apparent that many of the shortcomings related to the City's
development review process can be attributed to the fact that City engineers, located in various
departments, have an inconsistent approach to the review of development plans. This
inconsistency, rather than intentional, results in part from the fact that each department has its
own goal - Development Services to facilitate the development process; Public Works to ensure
quality infrastructure for the City, and College Station Utilities to ensure that infrastructure can
be adequately maintained. This inconsistency, coupled with the lack of Design Standards, may
result in the perception among developers that the City does not support development and
contributes to the developers' frustration with the review process. Organizing City engineering
positions from each department in one autonomous department reporting directly to City
management should help promote consistent application of City Design Standards to the
development review process.
Early in the Cl team's review we also identified a lack of communication between the
departments involved in development review. The first step towards better communication took
place during the team's many meetings when team members from different departments
repeatedly discussed their roles in the development review process, with each gradually realizing
that they could work together to achieve their common goal. This commitment to change is
manifested in the staffs' intention to meet regularly to foster an environment of collaboration,
rather than dissension, in the development review process.
3