WA9302-LR 960325[''EOTECHNICALE GEE Consultants, Inc.
EJ NVIRONMENTAL
10046 Monroe Drive · Dallas, Texas 75229 · (214) 352-5433 · Fax (214) 352-6972
GENERAL REPORT Drilled Shotcrete Cores
l~eport Date: March 25, 1996 Date Cast: February 26, 1996
Client: City of Coppell Report Number: 22
Project: 6.0 MG Water Storage Tank Project No. 95-196
l,tenti~cation: Obtaining and Testing Drilled Concrete Cores
Method of Test: ASTM C42 Test Date: March 8, 1996
F.esults:
Specimen
Nmber
CWT-SC 1 (Shotcrete)
CWT-SC2 (Shotcrete)
CWT-SC3 (Shotcrete)
Avg. Estimated
Length Avg. Nominal
of Length of Maximum Un-
Specimen Specimen Avg. Size of Cross- Corrected Corrected
Before After Core Coarse Sectional Max. Compresslye Compresslye
Spechnen Capping Capping Diameter Aggregate Area L/D Load Stren~h Strength
~ (in.) (h.) (~.) (in.) (sq.h.) Ratio (lbs) (PSI) (PSI)
CWT-SC1 Not 3.73 2.71 Fine 5.77 1.38 19,540' 3,390 3,210
Measured
CWT-SC2 Not 3.82 2.69 Fine 5.68 1.42 40,940 7,210 6,860
Measured
CWT-SC3 Not 3.80 2.68 Fine 5.64 1.42 37,660 6,680 6,360
Measured
Type of Fracture: CoBe
Age of Specitnens: 10 Days
Direction of Application of Load
V ith respect to Horizontal Plane of Concrete as Placed: Perpendicular
~'~oisture Condition at Time of T~th~g: Air dried
Average Compressire Streng~ of Cores: 6,610
Above t~t results do meet ACI 318 requirements for 6,~ lbs./sq. In.
· Note: Core was damaged prior to testing and not accounted in average compressive strength calculation.
Ctn'ed by: L.D. (~
ct: Mr. La-'y Davis - Cit} of Coppell
Mr. Gary Hendricks * Shimek, Jacobs and Finklea
{ ~u~ [ettel's and rcp~u~s are tt. the exclusive use t~f Ihe client tt~ wht~lll t~y a~ addressed. The use ~f ~ur name must receive our prior wntten approval Our letters and repress apply t~nly tt~ the sample tested and/t~r i~pected, and arc
n~t necessarily indicative {~f the quantities 4 apparently idenlical or similar products.