CF-Cozby Library-LR 940624I G EOTECHNICAL
E GEE Consultants, Inc
2540 Glenda Lane · Suite 10g · Dallas, lexas 75229 · (214) 620-9791 · Fax (214) 620-97~_
STATISTICAL ANALYSIS OF CONCRETE DESIGN
Repo~ Date: June 24, 1994 Sample Da~: June, 1994
Client: City of Coppell
P~ject: W.T. Cozby Public Library
Identification: Statistical Analysis of Compressive Strength Test Results
Me~hod of Test: ACI 214-77, ACI-318
Mix No: 45
Required Compressive Strength at 28 da>,s: 3000PSI
Month ending: June, 1994
Test Cast Average 7 Day Average 28 Day 28 Day Moving Cumulative
No. Date Strength (PSI) Strength (PSI) Average of Last 3 (PSI) 28 Day Average (PSI) Remarks
WTC 51 5/14/94 2.900 4,050 --- 4,050
WTC 56 5/20/94 3,120 4,545 --- 4.298
%%rl'C 61 5/24/94 3,080
Total number of completed 28 day tests: 2
28 day average compressive strength (PSI): 4,298
28 da,,' standard deviation (PSI): 350
28 day coefficient of variation (%'1: 8.1
cc: G~y. Sieb-City of Coppell "///: ~' &
Larry. Davis- City of Coppell ~.~.,~~
Mike Sherpinskas - Diversified Construction Services, Inc.
Jim Bullock - F & S Partners
Russell Williams - Brockette Davis Drake, Inc.
AR b't~rs and aeago~ are for the cxch~i%~ uae of the client to ~.'l~rn ~ ate addeeaaed and shall not b~ mproduagd without ~e full appt~'al of GEE C~, Inc. The use of otur r~tr~ mgm reogive
out prio~- written aP~Wovm. Out ie~ts and i~-po~Is ap~ly mxly to th~ snmpk tealed and/or impected and am nm neceeaatily indicative of th~ ClUamitie~ of a~mmly identical or similar fnodueta.