CF-Cozby Library-LR 940523 (4)J G EOTECHNICAL
E GEE Consultants, Inc.
2540 Glenda Lane · Suite 106 · Dallas, Texas 75229 · (214) 620-9791 · Fax (214) 620-9794
STATISTICAL ANALYSIS OF CONCRETE MIX DESIGN
Repo~ Da~: May 23, 1994 Sample Date: May, 1994
Client: City of Coppell
P~j¢¢t: W.T. Cozby Public Library
Idcmification: Statistical Analysis of Compressive Strength Test Results
.Me~od of Test: ACI 214-77, ACI-318
Mix No: 8271
Required compressive strength at 28 days: 3000PS!
Month ending: May, 1994
Test Cast Average 7 Day Average 28 Day 28 Day Moving Cumulative
No, Date Strength {.PSi) Strength (PSi) Average elt Last 3 (PSi) 28 Day Average (PSI) Remarks
W'FC 1 4/18/94 2,415 3,380 --- 3,380
%%-I'C 11 4/20194 2,130 3,090 --- 3,235
Total number of completed 28 day tests: 2
28 day average compressive strength tPSI) 3,235
28 day standard deviation (PSD: 205
28 day coefficient of variation (%): 6.3
cc: Gary 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.
All lctt~m and repo~ta al~ fo~ O~ exch~i~n~ un~ of th: client Ito whom ~ ate add~ssod arid shall n~ be i-~ without th~ ball dppf~,al of GEE Coramitards, the. Tlr. u~ of out mun~ o~tr prioe writ~'n alal:Toval. Oul' I~tt~r$ and ~ agl:.ly only. to tht: sampt.' u~',-4 and.toe ir~ and a[~ nat n~essari.ly indi~ativ~ of ~s~ quantit~ of aplmrenOy' kb:utica] or similar