SS9901-LR040722 AMERICAN
REHAB & INSPECTIONS, INC.
(214) 536-2915
LOW PRESSURE AIR TEST FOR GRAVITY SANITARY SEWER
Test Procedures
Each section of sewer shall be tested between successive manholes.
Air shall be introduced into the pipeline until 4.0 psi gauge pressure has been reached. At that time the
flow of air shall be reduced and the internal air pressure shall be maintained between 3.5 and 4.5 psi
gauge for at least two (2) minutes to allow the air temperature to come to equilibrium with the
temperature of the pipe walls. Pressure in the pipe shall be constantly monitored by a gauge and hose
arrangement separate from the hose used to introduce air into the line. Pressure in the pipe shall not be
allowed to exceed 5 psi.
After the temperature has stabilized and no air leaks at the plugs have been found, the air pressure shall
be used to determine that time lapse required for the air pressure to drop to 2.5 psi gauge.
If the time lapse required for the air pressure to decrease from 3.5 to 2.5 psi exceeds that shown in the
following table, the pipe shall be presumed to be within acceptable limits for leakage.
If the time lapsed is less than that shown in the table, the contractor shall make corrections to reduce the
leakage to acceptable limits.
Line ln~[brmation Test Results Air Test Mandrel
Line Station to Station Pipe Size L.F. Tested Time Passed C?) Passed (?)
Date:
Job#
Inspector: /(-~c.~< '~:~ c/,~r_.e.
Construction Materials Testing
and Environmental Consulting
Texas
CMT,
Irlc.
10044 Monroe Drive Dallas, Texas 75229 (214) 352-6957
Fax (214) 352.6972 www .texascmt.com
REPORT OF CONCRETE MIX OBSERVATION
Report Date: July 22, 2004 Date Concrete Placed: July 14, 2004
Client: Cily of Coppell
Project: DeForest Lift Station, Coppell
Contractor: SYB Construction c
Concrete Supplier and Plant: Southem Star #27 f ,~ff
Location of Placement: Paving /.~ [
Standard 6"xl2"
Area 28.27 Square Inches
MATERIALS
Sour¢~ SSD Batch Wts
Description (Lb~CuYd)
OBSERVATION DATA
Mix Number: 7723PPU Time Sample Batched:
Cement: Time Sampled:
Fly Ash: Sample Location:
Truck/Ticket No:
Coarse Aggregate: Temperature:
Intermediate Aggregate: Ambient Range: 91 °F
Fine Aggregate: Concrete Range: 97°F
Slump Range (inches): 5½"
Admixtures: Weather Conditions: Clear
I Time Started: 07:30 am
2 Time Completed: I 1:30 am
Added Water: 0 gallons Sample Air Content (%): 4 1%
Total Cubic Yards Placed: 20
N/A
10:00 am
25' E. & Iff N. of SW comer of approach
SYB/287827
Required Strength (Lbs./sq.in 3,000
Spec[men Measured Age Date Total Load Compressivo Strength Rem*xks
Number Slump ~in I ~Da~$) Tested tLbs
DLS 5 7 07/21/04 87,400 3,090
DLS 6 28 08/11/04
5½"
DLS 7 28 08/11/04
DLS 8 H HOLD I
Test Methods Utilized Fracture Re~l~
ASTM C-31,C-39tC-143 {Unless Nor~ Oth~ Cylinders Made By: KN
Remarks and/or Distribution:
cc Mr. Rick O'Dell - Ciiy of Coppell
Mr Ted B Sugg - Turner Collie & Braden, Inc.
Mr Sam Montoya- SJ. Louis Construction of Texas LTD. (Retests-densities)
Texas CMT, Inc. Reviewed by: