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City. of College Station
POSTOFFICE.BOX 9960 1101 TEXAS AVENUE
COLLEGE STATION,TEXAS77840-2499
Apr il19, 1983
MEMORANDUM
TO:
PLANN1NG& ZONINGCOMHISSION
J. w. \./ood
FROM.:
Project Review Committee: y
Al Nayo,D i rector of P 1 ann i ng .... .. ...
Roy Kelly, Vice Chairman p&Z
David Pullen, City Engineer
Other..Staff:
Ha rryDavi s, Fl re r.1ars ha 1
Dan Dupies, Ass't toZonlng Official
Jim McCord, Elec. Power Engrs.
ShirleyVolk, Planning Technician
SUBJECT: Parking Lot Plan - Eastmark ofclSvc Center -J.WtlWood.-83-420
TheP.R.C.meton this date to review the abovementioned project, and recommends
approval wlththe following cond iti ons: .-;'\
(1)
(2)
(3)
(4)
(5)
Waterline throughlocat ion .offi re hydrant must be 8";'after that po i nt
'can dropto6n. Plans to be prepared bya registered professional engineer.
Checkwlth Director of Public Services (Mac All'en) conce.rn:ing location of
dumpster.
Include~a.dd:i trona 1 land scapin'g.i nforma ti on.
Makesldewalks6 ft. rather than 5>ft. to allow 2 ft. overhang when cars
are parked.
If one sewer line>services more than one .bulldin-g,it must be a Ilpubl icll
sewer line; alternative is each building canbeindlvlduaTly.sewered by
at Ip r i vatell <sewe rli.ne.
E Ilm lnateoned rivewaytoEastma rkDrive; Jf()ne':ma in. ~'rivewayi s used as
access to multi plephases, suggest this be widened.
If one 'maindriveway is used ,an access 'easement.must beprovi ded.
(6)
(7)
;'\Any changes to the approved si tep 1 an must be c1.eared through the Office of
the Director of Planning.
SUBMIT 10 COPIES OF REVISED PLAN TO PLANNING DEPARTMENT BY 5:00.P.M. APRIL 29th
TO BE INCLUDED ON P&Z AGENDA MAY 5th.
sjv
AASHTO__GeoFnetricDesignoj Highways and SI reels
the largestdesignv~hiclelikelytou~ethat facility with considerable fre-
quency or ad~ign vehicle\Vith special characteristics thatmustbe takeni nto
accountiQdimensioning the facility is used to determine the design of such
criticaLfeattlresasradii at intersections llnd radii of turning roadways. Design
vehicle prpfi les can be determined from the dimensions shown in Table II-I.
Figuresll-l tbroughIH5 present the minimum turningpaths for the 15
critical design. vehic;les. The principal dimen~ions. affecting design. are the
minimum turning radius,t~e tread width, the wheelbase, and the path of the
inner rear tire. Effects ofdriver characteristics (such a~ the rate at which the
driver approaches centripetal acceleration) and. of the slip.. angles of wheels
are .minimized by assumingthllt the speed of the vehicle for the minimum
radius(sharpes~) turn is-less than lOmph.
The boun.daries of the turning paths · of the several design. vehicles when
makin.gthesharpest turnS are established by the outer trace of the front over-
hang and thep~th of the inner rear wheel. This turn assumes that the outer
front whet<l follows the circular arc defining the minimum turning radius as
determiIled by the vehicle steering mechanism. The minimum radii of the
outside and inside wheel paths are given in Table Il-2.
Geometric design requirements for trucks and buses are muy~ mo~e severe
than theYllre for pllssenger. vehicles. Trucks and buses.. are~i~er ~nd have
longer wheelbases andgrellter mimimum turning radii. rhes~ryre thp princi-
palcharaoteristic dimensions llffectinghorizontal highw~ydAS~~P' T~e longer
single-unit trucks and buses require greater minimum turI1ipgF~~dii t*an most
vehiele..c. o,.mbinations,. but bee au s.. e of their. . greater off tracking, tHe longer
~, _ ' :, ':; ,.;!I 'i":::':::'.~:" 'i
. vehide combinations also require greater widths of turniIlg patns.
A semitrailer combination is a truck tractor with a seIIlitta~;ler, either with
or withol\ta full trailer,or a truck with one or more fulLtr~ilers.!Because
semitrailer-combination sizes and turning characteristics. var~> widplY1 there
are several semitrailer design vehicles: (1). a design vehicle. r~presei1ta:tive of
mediufI). tractor-semitrlliler combinations (WB-40), (2) l!. desi9rveh~cle repre-
sentativeof larger tractor-semitrailer combinations cOIIl,Illonly in use
(WB-50), (3') a design vehicle representative ofa larger tractOf-~emitrai~er full
trailer combinations commonly in use (WB-60), (4) a design i vehicle repre-
sentative .of a larger tractor- semitrailer combination allowed.orl. selected high-
wayS by the Surface Transportation : Assistance. Act of 1982(WB~62), (5) a
desigll vyhicle representativeofa larger tractoHemitrailergrandfatheredon
selected .highways by the Surface Transportation. Assistance Act of 1982
(WB-67), (6) a design vehicle representative of tractor-semitrailerfull trailer-
~\po
= Designvehicle with 48' trailer as adopted in
(Surface. Transportation Assistance Act)
**. = Design vehicle with 53' trailerasgran~fathered in
1982 STAA(Surfac~ Transportation Assistance Act)
a = Combined dimesion24, splitis estimated.
b ;:: CombinedditTlesion 9.4, split is estimated.
c= Combined dimension 8, splitisestimated;
d;:: Combined dimension9.1,split is estimated.
WB hWBZ' .WB3,>WB4 are effectivevehiclewheelpases.
S isthedistanc~fromthereaJ effectiveaxleJothe hitch point.
T is the distancefrom the hitch point to the lead effective axle
\K\~~.ecst
}3.- i~(P,. cpt
of the following unit.
1-1 Deslgn.vehiCledimenslons.
Passenger car
Single unit truck
Single unit bus
Articulated bus
Combination trucks
I ntermed i ate semi tfa iler
Large semitrailer
"Double Bottom" semi-
trailer---fu 11- tnli ler
Inters tate SeIll itrail er
Interstate Semitrailer
Triple Semitrailer
ThrnpikeDouble
Semitrailer
Recreation vehicle
Motor home
Car and camper . trailer
Car andboattrailer
Motor Home and Boat Trailer
..
Design Vehicle Type
9872 STAA
Overall
Symbol Height Width Length
- -
p 4.25 7 19
SU 13.5 8.5 30
BUS 13.5 8.5 40
A-BUS 10.5 8.5 60
WB-40 13.5 8.5 50
WB-50 13.5 8.5 55
WB-60 13.5 8.5 65
WB~62* 13.5 8.5 69
WB~67** 13.5 8.5 74
WB-96 13.5 8.5 102
WB~114 13.5 8.5 118
MH 8 30
PIT 8 49
P/B 8 42
MH/B 8 53
Dimension (ft)
- ~ ..
~erhang
Front REAR WBt WB2 S T WB33 WB4
- - - - - -
3 5 11
4 6 20
? 8 25
8:5 9.5 18 48 20a
4 6 13 27
3 2 20 30
2 3 9.7 20 4b 5.4b 20.9
3 3 20 40-42
3 3 20 45-47
2.5 3.3 13.5 20.7 3.3d 6d 21.7 21.7
2 2 22 40 2c 6c 44
20
11 18
11 15
20 21
~
~
~
e;"B'
::1
~
::1
~.
~
~
;:s
~
L:l
..,
~.
"'"'t
5'
Table
Design vehicle.with 48 'traHeras adopted in! 982
STAA. (Surface Transportation Assistance Act)
** Designvehic1ewith S3 'trailer .as grandfatheredin
1982 STAA(SurfaceTra-nsportadon 'AssfstanceAct)
1-2.
\
\
Pa th 0 f -.....\
right rear \
wheel \
\~
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