River Ridge Add-LR 940520 2575 Lone Star Or~e · P.O. Box 224227 · Dallas. Texas 75222
(214) 631-2700 / FAX (214) 920-1891
REPORT OF
CONCRETE COMPRESSIVE STRENGTH
CLIENT: RBR, Thc.
Attn: Bobby Rollings
P.O. Box 796303
Dallas, TX 75379-6303 CLIENT NO.: 3452351
REPORT NO.: 99079
PROJECT: River Ridge Addition DATE OF SERVICE: 4/22/94
Coppell, Texas AUTHORIZATION: John
REPORT DATE: 5/20/94
SERVICES: Sample concrete at location of placement, perform [equired field tests,
prepare and test concrete compressive strength specimens.
PROJECT DATA
CONTRACTOR: Parco CLASS OF CONCRETE: N/A
CONCRETE SUPPLIER: On site DATE OF PLACEMENT: 4/22/94
PLANT: N/A TIME SAMPLED: 07: 50AM BY: James Ledbetter
SPECIFICATION REQUIREMENTS TEMPERATURE ('F) - AIR: 64 CONCRETE: 80
STRENGTH: 3600ps£ @ 28 DAYS TRUCK NO: 6-3 TICKET NO: N/A
SLUMP: 5" AIR CONTENT(%): 4.2
AIR: 4.0;[ LOCATION OF PLACEMENT:
METHODOFTEST: ASTM C-39 Paving and curb Britanny Street, 5' south of
ASTM C-143 Breanna Street and 10' west of curb
REPORT OF TESTS
CONCRETE COMPRESSIVE STRENGTH - 6 X 12 CYLINDERS
CYLINDER MEASURED MAXIMUM COMPRESSIVE
MARKED SLUMP DATE AGE LOAD STRENGTH
SET NO. (inches) TESTED (days) fibs. force) (Psi) REMARKS
1 1 4.00 4/29/94 7 78000 2760
1 2 4.00 4/29/94 7 78500 2780
1 3 4.00 5/20/94 28 98400 3480 **
1 4 4.00 5/20/94 28 101000 3570 **
** Does not comply with specified strength.
Technician: James Ledbetter Started: 06:00AM Stopped: 09:00AM
Report Distribution:
(1) RBR, Inc. Southwestern Laboratories, Inc.
(1) CCH Engineering
(1) PetcoUti[ities, Znc. ~O_,~_ ~
(1) City of Coppe[[ Jr. King ok, F..
.O~..r letters and reports are for the exclusive use of the client to wl~om they are addressecl and shall not be rel~roduced excel~t In
1001 CME ~u, w~hout the aDproval of the test ng laboratory The use of out name must receive our wr~en aporovaL O~r letters and reports
aDl~ly only to the samDle tested and/Or insoecte~], and are not indicative of the quantities of al~Darently identical or similar I~rooucts.