HomeMy WebLinkAboutSewer System ReportSewer System Report
for
The Barracks Subdivision
Phase 2
College Station, Texas
April , 2009
Prepared Bv:
HARLE ENGINEERING COMPANY
TBPE Firm Registration No. 4538
3002 Texas Avenue South
College Station , Texas 77845
979.693.7191
General Information
Location:
General Note:
Land Use:
Design Criteria
The Barracks Subdivision, Phase 2, Lots 8-33, Block 2 and Lots 25-48,
Block 3 is located adjacent to the Williamsgate Subdivision and the
existing Phase I of The Barracks Subdivision.
These 50 residential lots will flow into the existing 8"sewer lines and the
proposed 6" sewer lines which are an extension of an existing 8" sewer
line that was constructed with the development of Phase 1 of The
Barracks Subdivision. The sewer services for Lots 32 and 33, Block 2
will connect to the existing 12 ' sewer line adjacent to this Phase.
Townhome residential
Primary Sewer Outfall: An existing 12" sewer line on the Haupt tract along the north line of this
subdivision which was constructed for the Williamsgate Subdivision.
Domestic Demand:
Avg. Pop Density:
Average Flow:
Peaking Factor:
Pipe:
Applicable Exhibits:
Conclusion
2.67 persons per unit
100 gpd/cap Residential
4
PVC 03034 SOR 26
Exhibit A -Sanitary Sewer System Schematic
Exhibit B -Sanitary Sewer Analysis Spreadsheet
The existing 8" lines flow into the existing 12" line or the 8" lines
constructed with Phase 1. The proposed 6 " lines.flow into an existing 8"
line previously constructed that was designed for the flow from this
development. The analysis in Exhibit A checks the calculated slope
required to pass the estimated flow against the design slope shown on the
plans. The spreadsheet indicates the design slope is greater than the
minimum computed slope, so we conclude that the Jystem is more than
capable of carrying the anticipated flows from the subdivision.
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SEWER LINE S-2
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LIEUTENANT A VENUE
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I I I I I I I I
THE BARRACKS SUBDIVISION
PHASE 2
COLLEGE STATION, TEXAS
SEWER SYSTEM REPORT
-3
-"" u 0 ex::
EXHIBIT
A
Line
From To
MH# MH#
"' 0 ...l
-~ c "' :g
"' "' "" 267
GPO/lot
I
I '
I
I
! I
"' ~
0 "' QJ
...l "' "' ~ .c a. c Oil
'-' c:
"O ;r.
<I) '-' x
"" ~
GPO per
Acre
' ;
I I
!
I I
., I <I) "O I '-' 0 Oil "O ;z ' c: E 0 "' ;z E "O ::; 0
0 .D <!:: E e ;z ·.:: ~ "' t..:. 9 c .2 ~ ~ 0 t..:. "' .2 i u a.
t..:. i ::i
:
GPO '
Exhibit B
The Barracks Subdivison, Phase 2
Sanitary Sewer Analysis
Flow Calculations
i
! Average Daily Flows I Infiltration I : (ADF) :(I0%ADF)
GPD CFS CFS
Peaking Peak
Factor j Flows
CFS
I
Size Material
i I
'
I ' ' I
(in)
Pipe Calculations
I M . I annmg 1 Min.
Inside Friction Design
Slope Slope Diameter : Peak Peak i Flows Flows
Inches % %
Actual Pipe
, Slope (if Slope
: known) Check I I
%
MH9 _ MHIO _ _9 __ ~· ---~ _ __: __ }_~403 i __ -___ 2,403 ' oo~ 000~4-__ ' 4.oo ; 0.02 -· _?~~~-~:793 o~ooo~_..__?:~.-'. ... -085 _ o~
MH8 MH9 22 0 5,874 , 2,403 8,277 0.0128 ! 0.0013 4.00 0.05 6 03034 I 5.793 0.0105 0.80 0.85 OK ----·. -. ---------. ------,-·-------T--------;---·· ----·------·----------· ---. -· ------·-------. ---
-Ex ~---~H8 ___ 8_ ··-,--~ ----~.?~ : ____ 8,277 ,_ --~0,413 ~ o ~-~~:_0~1 6 ·-4~ -~?..:'._ -~--03034 .. _5.793 --~~6 .. -~~8~ ---~5--OK_
Ex 2 Ex 7 8 ' 0 2,136 10,413 12,549 , 0.0194 I 0.0019 4.00 1 0.08 8 J 03034 7.754 0.0051 040 0.40 . _.?K_
--------·----·· I -.--1------------,------------1--· ··-----·------· ----·---
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