Stoneleigh P1-LR 980727RESULTS OF CORE COMPRESSION TESTS
CORE ACTUAL CAPPED DIAMETER BREAK ACTUAL COMPRESSIVE
NO- T,FNGTH T,FNGTH ( TN) DATE T,O T) ( T,BS ) STRF.N NTH_
1 7.2
IN
3.7
IN
3.7
07/27/98
44,830
3,650
PSI
2 11.4
IN
8.6
IN
3.7
07/27/98
32,090
3,000
PSI
3 7.9
IN
5.5
IN
3.7
07/27/98
32,760
2,940
PSI*
AVERAGE: 3,200 PSI
T,O_ATTON CONFIRMATION CORES FOR CONCRETE PLACED FOR
PAVEMENT ON 05/21/98 (SEE ALPHA TESTING REPORT
NO. 97060 -171)
* SEE ATTACHED COPY OF SECTION 5.6.4.4 OF ACI 318
FOR ACCEPTANCE CRITERIA BASED ON CORES
SUBM
ING, /INC.
u
FIRST WORTHING CO. CORE COMPRESSION TEST
DALLAS, TEXAS RESULTS (ASTM C -42)
STONELEIGH APT.@ RIVERCHASE 97060 -270 07/27/98
COPPELL TEXAS
Ala tsu1LL)tnu WL)EX;UMMLN 1 AK T
CODE
be immersed in water for at least 40 hr and be tested
wet.
5.64.4 — Concrete in an area repre®ented by core
teals shall be considered etrucltxally adequate it the
Wags of three cc - as is equal to at least 85 percent
of f a and if no single core is lei then 75 percent of
f c AddNional tasting of cores extracted from loca-
tions represented by erratic core strength results
shall be permitted.
5.6.4.5 — N criteria of 5.6.4.4 are not met, and if
s rumval adequacy rernam in doubt, the resportst-
ble au#XXily may order load leafs as outlined in
Chapter 20 for the questionable portlon of the struc-
two, or felts other appropriate action.
5.7 — � � Ipmer�t and
5.7.1 — Preparation before concrete placement shall
include the following:
(a) AN equipment for mixing and transporting con -
crets still be dean.
(b) AN debris and ice shall be removed from
spaces to be occupied by concrete.
(c) Fors shall be property coated.
(d) Masonry filler units that will be in contact with
concrete shall be well drenched.
(e) Reinforcement shall be thoroughly dean of ice
or other deleterious coatings.
(f) Water shah be removed from place of deposit
before concrete is placed unless a tremie is to be
used or unless otherwise permitted by the Building
Official.
(g) AN laitance and other unsound material shall be
rerrtoMSd before addtlond concrete is placed
against hardened concrete.
5.8 — um ft
5.6.1 —All concrete shall be mixed until there is a
uniform distribution of materials and shall be dis-
charged completely before mixer is recharged.
COMMENTARY
s l tsra G h-4y
tical, particularly in the case of floor or roof systems, for
the Building Official to require a load test (Chapter 20).
Short of load tests, if time and conditions permit, an effort
may be made to improve the strength of the concrete in
place by suppkmental wet curing. Effectiveness of such
a treatment must be verified by further strength evaluation
using prooedur+ea previously discussed.
It should be noted that core tests having an average of 85
percent of the specified strength are entirely realistic. To
expect core tests to be equal to j', is not realistic, since
differences in the size of specimens, conditions of ob-
taining samples, and pia for curing, do not permit
equal vahas to be obtained.
The code, as staled, concerns itself with assuring sum -
tural safety, and the i wbuctioa in 5.6 are aimed at that
objective. It is not the function of the code to assign
rrapoosibi ty for strength ddicieocies, whether or not
they are such as to require corrective measures.
Under the requirements of this section, cores taken to
confirm structural adequacy will us=Uy be cater at ages
later than thaw specified for determination of j'.
R5.7 — PkqW of equipulkesd and place
of depoek
for mixing, handling and transporting,
and placing concrete are given in detail in "Gaiele for
Mewwu*W Mi:i■g, ZntsspwdmS, sail Pl WW9 Can-
cra reported by ACI Committee 304. s ' (Presents
methods and procedures for control, handling and storage
of materials, measurement, belching tolerances, mixing,
methods of placing, trinsporting, and forms.)
Attention is directed to the need for using clean equipment
and for cleaning forms and rei &wcemew thoroughly be-
fore begiming to deposit concrete. In particular, sawdust,
nails, wood pieces, and other debris that may collect
inside the forms must be removed. Reinforcement must
be thoroughly cka wd of ice, M. loose cwt, Mill soak,
or other coatings. water should be removed from the
forms.
R5.8 — MhJM9
Concrete of uniform and satisfactory quality requires the
materials to be thoroughly mixed until uniform in ap-
pearance and all ingredients are distributed. Samples
air' l'l7 - 7d b1 L7 1 v..��. .... v G. <l.. l'"IHJC___ `J fL Jb'+ 7400 Y. Woe
NO. 237 G;02
fl7i17i98 15:52 ALPHA TESTING 4 972 304 9650 r
INC REPORT OF CONCRO. :.
A ALPHA T ain St. + C OMPRESS ION TEST 4
2209 YVis�orlctn 3t.
suits 100
Dallas, Texas 75229
(214)620-8
TEBTlcD FOR: FIRST wa���AN�G COMPANY
DATE OF "QE: MAY
21, 1 998
DALLAS,
'Wrw.V1
BTAENQTH, P
N CURING
pROJECr. STONELEIGH AT RxVERCHA9E
OUR REPORT NO.: 9'7060-171
COPPELL, TEXAS
281 LAB 05/28/98
- • -- - -. _... - -..���
FIELD DATA
29.27
PAVING - 40'
SAND 10' E FROM S.W. CORNER
�pN OF pplyq�E E PLACEMENT OF OAMOV , IBV1 ;+DING 6
65,193
28.21
PLANT
5 5 5 3.2
DATE PLACED 05/21/98
DgUvER TICW NO
3 70235
TIME 15 :15
MIX PROPUHT"S (869)
NIA
SLUMP (AM C•143) 9.75
C•173 I - i)
CEMENT
N/A
AIR CONTENT OSTM C•2310 OR
4.0
WATSR
N/A
NR TEMPERATUM 91
FINE AQQREi3ATE
CgNCRE T9rPERATURE 94
COAR9EAMMEOATE
N
DATE RECEIVED 05/22/98
ADMiXrt)t�
N/A
PILO DATA SLBMITYEG by
JR
MIX DATA SUBMITTED By
wmV C•617 L A OR
0.1231 ;l
SPCOIMEN8 CAPPED Ml ACCORDANCE __
COMMa610N TEST 1`111A Ts
(NOMMML CYLINORN sib 6" X 121
(ASTM C46)
k TYPE OME
TESTED
AGE
DAYS
TOTAL
LOAD
AREA
'Wrw.V1
BTAENQTH, P
N CURING
281 LAB 05/28/98
7
45,322
29.27
1
' 282 LAS 06/18/98
28
65,193
28.21
2,310
283 LAB 106/18/96
. 07/16/98
28
73,656
28.17
2,610
284 LAB
1
�
I
56
77,928
28.27
2,760
f 2J - -.- 3' om
1 �p�dllcklonr
SMFORl 4ZSLNT OF HIC11 SLUMP. *t"POWRID CRBG ON d •39.9a OF LOW 94 DAY "N"S
fNiiORi= 9F TA31,100 TUST 1 -77 -91 LZrT M ICA M,IGZC
C C;ykoaa mad6 by ALPHA
npmnmatlw.
C1 C�indela med• by Archa�cre
01rCaR314t 8 ro Nativo.
U lnds� Fklwd up by ALPHA
OralWy.
Cl C>rNn 0011rartd to ALPHA
1-1 witapr��nliims. con+ply v+M1+
w"bien tm* ryJb do not owv'Y
oo Y
with apoirAMS yp04ieEMMS
�nea
Ti G. INC.
AT STE7rNER
00101WDATA-00100iH 1