HomeMy WebLinkAboutSewer Report Sewer System Report
for
The Barracks II Subdivision
Phase 107
College Station, Texas
October 2014
Prepared By:
Schultz Engineering, LLC
TBPE Firm No. 12327
P.O. Box 11995
College Station, TX 77842
2730 Longmire Drive, Suite A
College Station, Texas 77845
(979) 764-3900
OF
* * *
JOSEPH A. ULTZ
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F-12327
SCHULTZ ENGINEERING. LLC.
GENERAL INFORMATION
The Barracks II Subdivision is a 108-acre development in the area generally bounded by Wellborn
Road on the east, Holleman Drive South on the west, Cain Road to the north and Rock Prairie Road to
the south. It is zoned PDD and is comprised of a mixture of residential and commercial land uses.
There are 425 residential lots planned for the site and 25.3 acres of commercial property. The area
surrounding the site is generally undeveloped, with the exception of three residential developments
adjoining the tract on the south. The majority of the area between Cain Road and Rock Prairie Road
is described as General Suburban in the City's Comprehensive Plan, which implies that it is likely to
develop in a similar manner as The Barracks II Subdivision
Phases 100-108, 200 and 300 have been completed or are under construction. Phase 107 is unchanged
from the Preliminary Plat and will add 63 new lots. Exhibit A shows the lot and sewer layout for Phase
107
Sewer service to the area is provided by 18" and 12" lines running along Old Wellborn Road and along
the south property line of The Barracks Subdivision. These lines will be the primary outfall for this
development,but they are also intended to serve other adjoining tracts in the same sewer basin. These
adjoining areas are identified as:
CSISD Tract—23.50 acres
Mayo Tract—24.99 acres
Turner Tract(partial)— 15.08 acres
Barger Tract(partial)— 18.06 acres
All four of these tracts are presently zoned R except for the Turner Tract which is now zoned
Townhouse and General Suburban. None of these tracts affect this portion of the Sewer System.
Design Criteria:
Primary Sewer Outfall: Phase 107—Existing 12"sewer lines along Old Wellborn Road&Deacon
Drive
Domestic Demand:
Avg. Pop Density: 2.67 people per lot
Average Flow: 100 gpd/cap or 267 gpd per lot
Peaking Factor: 4
Commercial Demand:
Avg. Pop Density: 30 people per acre
Average Flow: 50 gpd/cap or 1500 gpd per acre
Peaking Factor: 4
Pipe: PVC D3034 SDR 26
Applicable Exhibits: Exhibit A—Sewer Exhibit
Exhibit B—Sanitary Sewer Analysis Spreadsheet
Conclusion:
The sewer system shown in Exhibit A has been laid out using the criteria in the Bryan/College Station
Design Guidelines and TCEQ. It is analyzed assuming peak flow conditions when this portion of the
subdivision is fully developed. The spreadsheet in Exhibit B shows all lines depicted in Exhibit A to
be capable of carrying the flows that come to them under these conditions. This analysis will be used
as the basis for all subsequent sewer line designs in the subdivision. The system will function as
intended as long as the line sizes and slopes are equal to or greater than those shown herein. It should
be noted that any significant additional flow from off-site sources will likely exceed the capacity of
several lines, so careful study is advised of any changes to the contributing area.
EXHIBIT A
OVERALL SEWER SYSTEM LAYOUT
EXHIBIT B
SANITARY SEWER ANALYSIS SPREADSHEET
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Sewer System Report
for
The Barracks II Subdivision
Phase 107
College Station, Texas
October 2014
Prepared By:
Schultz Engineering, LLC
TBPE Firm No. 12327
P.O. Box 11995
College Station, TX 77842
2730 Longmire Drive, Suite A
College Station, Texas 77845
(979) 764-3900
* * *
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vr 11,-1571.
F-12327
SCHULTZ ENGINEERING. LLC.
GENERAL INFORMATION
The Barracks II Subdivision is a 108-acre development in the area generally bounded by Wellborn
Road on the east, Holleman Drive South on the west, Cain Road to the north and Rock Prairie Road to
the south. It is zoned PDD and is comprised of a mixture of residential and commercial land uses.
There are 425 residential lots planned for the site and 25.3 acres of commercial property. The area
surrounding the site is generally undeveloped, with the exception of three residential developments
adjoining the tract on the south. The majority of the area between Cain Road and Rock Prairie Road
is described as General Suburban in the City's Comprehensive Plan, which implies that it is likely to
develop in a similar manner as The Barracks II Subdivision
Phases 100-108, 200 and 300 have been completed or are under construction. Phase 107 is unchanged
from the Preliminary Plat and will add 63 new lots. Exhibit A shows the lot and sewer layout for Phase
107
Sewer service to the area is provided by 18" and 12" lines running along Old Wellborn Road and along
the south property line of The Barracks Subdivision. These lines will be the primary outfall for this
development,but they are also intended to serve other adjoining tracts in the same sewer basin. These
adjoining areas are identified as:
CSISD Tract—23.50 acres
Mayo Tract—24.99 acres
Turner Tract(partial)— 15.08 acres
Barger Tract(partial)— 18.06 acres
All four of these tracts are presently zoned R except for the Turner Tract which is now zoned
Townhouse and General Suburban. None of these tracts affect this portion of the Sewer System.
Design Criteria:
Primary Sewer Outfall: Phase 107—Existing 12"sewer lines along Old Wellborn Road&Deacon
Drive
Domestic Demand:
Avg. Pop Density: 2.67 people per lot
Average Flow: 100 gpd/cap or 267 gpd per lot
Peaking Factor: 4
Commercial Demand:
Avg. Pop Density: 30 people per acre
Average Flow: 50 gpd/cap or 1500 gpd per acre
Peaking Factor: 4
Pipe: PVC D3034 SDR 26
Applicable Exhibits: Exhibit A—Sewer Exhibit
Exhibit B—Sanitary Sewer Analysis Spreadsheet
Conclusion:
The sewer system shown in Exhibit A has been laid out using the criteria in the Bryan/College Station
Design Guidelines and TCEQ. It is analyzed assuming peak flow conditions when this portion of the
subdivision is fully developed. The spreadsheet in Exhibit B shows all lines depicted in Exhibit A to
be capable of carrying the flows that come to them under these conditions. This analysis will be used
as the basis for all subsequent sewer line designs in the subdivision. The system will function as
intended as long as the line sizes and slopes are equal to or greater than those shown herein. It should
be noted that any significant additional flow from off-site sources will likely exceed the capacity of
several lines, so careful study is advised of any changes to the contributing area.
EXHIBIT A
OVERALL SEWER SYSTEM LAYOUT
EXHIBIT B
SANITARY SEWER ANALYSIS SPREADSHEET
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