Grapevine Creek-CS 910419 Engineers and Contractors
11210 Ryti~rest 214/§57-1199
P. O. Box ~057g ........ ~-
Balch Springs, Texas
- 819 .. ·
Mr. Patrick h. Acker, P.E.
Albert B. Balff Associates, Inc.
8616 Northwest Plaza Drive
Dallas, Texas 75225
Ret Gateway Business Park Drainage Structure
Dear Sir:
Enclosed is the concrete batch design we propose to use
on the above referenced project. Also enclosed is the
latest test results on the rock riprap stone from TXI.
If you have any questions regarding this matter, please
call me.
Yours very truly,
GIBSON & ASSOCIATES, INC.
A.J. Johnston
Vice President
AJJ/md
encl:
cc: Mr. Wayland Threadgill
Catellus Development Corporation
5429 LBJ Freeway
Suite 600
Dallas, Texas 75240-2609
TEXAS INDUSTRIES, INC.
7610 STEMMON$ FREEWAY · DALLAS, TEXAS 75~47 .. (2~,4~ 647-~?00
April 11, lg9i
Gibson & Associates
9003 Sweetwater
Dallas, Tx 75228
Attention Tony Johnston
RE: Gateway Business Park
Gentlemen,:
The attached concrete mix design utilizing the appropriate AS'TM C-33 or
ASiM C-330 aggregate is proposed for use on the above referenced project
foF ready mix concrete to be furnished by TXI.
To ensure tmat the correct mix is delivered to your project, please
order by The mix design number which appears in the upper left hand
corner of the mix design.
~exas Industries certifies that the above mix design, when ordered by
specifie0 design identity, will meet or exceed the indicated design
strength at a designated age when tested in accordance with the
applicable and current ASTM Standards C 31, C 39, C 78, C 172, C 293,
applicable provisions of C 94, and evaluated in accordance with
applicable provisions of the ACI 318 Building Code.
)xi would like to be included on your mailing list to receive all test
reports. ASTM C 94-86a Section 14.4 entitles a manufacturer to receive
copies of al! test reports when strength of concrete is used as a basis
for acceptance.
Contact us if you have any questions or require any additional
information. Please notify TXI of approval of the proposed mix design
prior to its use. To ensure that the proper mix design is ordered,
please send a copy of this letter, after approval, to the above
~'eferenced project to be used by the person ordering the concrete for
this job.
Sincerely,
TEXAS INDUSTRIES, INC.
Customer Service Representative
MIX # K8274 6.00SK ADMIX/AEA 1"CS 4000 PSI e 28 Days
AS REQUIRED
Maximum Coarse Aggregate Size: ASTM C 33 1"- #4 Crushed Stone
Maximum Water/Cement Ratio: 5.33 gal/sk ,472 lb/lb
Minimum Cement Content per Cubic Yara: 6.00 sacks
Maximum Placement Slump: 5.0 inches
Admixture ASTM C-494: Type A or D
Air Entraining Agent ASTM C-260: 3% - 6%
MATERIAL QUANTITIES PER 1 CUBIC YARD AT S.S.D.
564 lbs. or 6,O0 sacks ASTM C 150 Type I Cement
1840 lbs. ASTM C 33 1"- #4 CrusheU Stone
1273 lbs. ASTM C 33 Concrete Sand 267 lbs. or 32.0 gallons of Water
2.0 to 4.0 oz/cwt of ASTM C-494 Type A
Specified Air Content: 3% - 6%
Placement Slump: 4.0 + or - 1 inches
PUHPING RECOMMENDATIONS
I. 5" minimum diameter lines with no reduction to smaller lines.
2. Keep rubber hose to absolute minimum length and plan pipe with
as few 90 degree angles as possible.
3. Slumps and test cylinders should be taken ~ discharge end of
hose for strength guarantee to be valid.
4. To prime pump lines, a minimum of 8.0 sack grout should be
used for lubrication. In the case of strength concrete,
equivalent strength grout should be used if the grout remains
in the placement.
5. Pump mixes are based on minimum cement content pumpeO at
grcunU level, As pump line increases in length or height
and/or layout configuration changes, additional cement may be
required to assure strength and pumpability at additional cost
to the contractor.
we are enclosing all available back up data for the above referenced mix
design. If the strength information is not available or is not
sufficient, conformation cylinders may have to be made by your testing
laboratory.
TEXAS INDUSTRIES, iNC.
CONCREIE DESIGN EVALUATION
Date- 04/i7/91 *' Statistics Compiled Fr:m lnUependent Laborator~ Test Ipecimens ** Page'
~ix No. K8274 Strength 4000 psi @ 28 Days
28 Day lest Data
Test Plant Temperature Placement Percent ....... 28 Day ....... Cum Moving
N~ Date No Amb Con Slump of Air PSi 1 PS! 2 PS! Aeg ArB Ay9 of 3 Range
I 09/26/90 18 93 BO 3.0 4.7 5850 5830 5840 5840 5840 20
2 09/28/90 18 89 87 3.7 3.7 5300 54iO 5355 5598 5598 110
3 09/28/90 3! N/A 90 6.0 4.0 4550 4760 4655 5283 5283 2t0
4 IO/O2/90 18 28 83 3,D 4.3 5140 5110 5125 5244 5045 30
5 10/16/90 18 82 80 Z.5 4.5 5010 4920 4965 5188 4915 go
6 10/18/90 16 65 75 2.5 4.0 5420 5410 5415 5226 5168 10
7 !0/18/90 18 53 72 4,0 N/A 5400 5330 5365 5246 5248 70
8 10/24/90 18 69 72 3.7 3.7 5240 5!70 5205 5241 5328 70
9 10/24/g0 18 72 72 3,0 4,5 4980 4860 4920 5205 5163 120
10 10/31/90 18 E3 84 4.0 5.2 5180 5130 5155 5200 5093 50
ti I1/02/go i8 7g 84 2,7 4.O 5430 5350 5390 5217 5!55 80
12 !1/ID/g0 18 68 70 4.5 3.5 5700 5640 5670 5255 5405 60
13 11/10/90 18 68 68 3.0 3.7 5650 5720 5685 5288 5582 70
14 11/10/90 18 58 68 3.2 6.5 4820 5110 4965 5265 5440 220
15 11/13/90 i~ 80 78 5.2 5.g 5380 5390 5385 5273 5345 10
16 11/16/90 12 70 75 4.0 2.3 5570 5560 5565 5291 5305 10
]? 11/20/90 18 70 77 4.0 4.2 5280 5310 5295 5291 5415 30
)8 11/20/90 !8 75 78 4.0 3.O 5210 5170 5190 5286 5350 40
19 11/30/90 18 54 64 3.7 3.2 5850 6000 5925 5319 5470 150
26 11/3o/90 IS 62 70 2.2 2.5 6570 6620 6645 5386 5920 50
21 !l/30/90 12 54 63 4.5 N/A 5210 5210 5210 5377 5927
22 12/O8/90 18 62 67 4.0 4.2 5740 58~O 5810 5397 5888 140
23 12/O8/90 !8 52 62 3.0 4.1 5850 6020 5935 5420 5652 170
24 12/12/90 18 60 69 3.5 4.8 5390 5410 5400 5420 5715 20
25 i2/12/90 18 64 69 3.7 5.3 5530 5570 5550 5425 5628 40
26 !2/14/90 lB 57 65 3.5 5.1 5340 5280 53!O 5420 5420 $O
27 12/lg/go lB 58 60 3.7 5.3 5800 5670 5835 5436 5565 70
28 ~/19/90 lB 69 66 4.5 5.2 5470 5410 5440 5436 5528 60
29 12/19/90 18 45 63 3.7 8.$ 5960 5630 5795 5448 5690 330
30 12/19/90 18 61 63 4.D 5 5 5870 ~930 5900 5463 57!2 60
**~ Averages *** 68 73 3.7 4.4
COMMENTARY OF STATISTICAL EVALUATION OF CONCRETE DESIGN RESULTS
Hix NO. K8274 Strength 4000 psi @ 28 Days
Paragraph 4.6 of ACI 318-83 provides that as data becomes available during
construction,
the
amount
by
which
(f'cr) must exceed the specified value of
(f') may be reduced, provided:
(al 30 or more test results are available and average of test
results exceeds that required by Section 4.3.2.1, using a
standard deviation calculated in accordance with Section
4.3.1.1, or
(b) 15 to 2g test results are available and average of test
results exceeds that required by Section 4.3.2.1, using a
standard deviation calculated in accordance with Section
4.3.1.2.
The required average compressive strength has been calculated, using a
standard deviation calculated in accordance witl~ AC1 318-83 Section
4.3.1.1 or Section 4.3,1.2 and is the larger value of these calculations
f,
cr + 1.34(SD)
- 4000 + I. 34(OO3gB)
- 4533
= fm
cr + 2.33(SD) 5OD
C
= 4000 + 2.33(00398) 500
= 4427
SUMMARY OF STATISTICAL ANALYSIS
28 Day Test Data
Number of lestS .......................... 3D
Maximum Value ............................ 6645 psi
Minimum Value ............................ 4655 psi
Range .................................... lggo psi
Average Strength ......................... 5463 psi
Standard Deviation ....................... 398 psi
Required Average Strength to satisfy
minimum probability conditions of
ACI 31B-B3 Section 4.3.2.1 ............... 4533 psi
Design excess beyond code requirements.. 930 psi
e800-366-2894
TEXAS INDUSTRIES, INC.
CEMENT D/VISION, 245 Ward Road Mk]lothl~n, TIxll 78065
~0£ SPECI F1 CATIONS
Portlamd Cement
Type I
A.S.T.M. C150-89
_ A.A.S.~,T,O. N 85-88I
Car Mumber
~oni
~ate or saapl~na December 1990 Monthly Average
] AASflTO RISULTS
SO3 {Cll more than 8~), maximum ~ercen~ 3.5 [ 3,s 2.75
Loom on l~nition. Hmximum Percent 3.00 3,00 ~ 1.~7
Hax~iua [B 21[l) '.----: .................... 400
v~ca~, ln~al Se~, ~iniaua (Htnu~ee) 45 45 101
Yield, r~nal Set. ~iX~lUI (flinutml) 37S 3~6 237
Autoclave Ix~m~atom, Haxlsum Percent ~. 8 O. ~ 0.005
3 ~a~ aAnimum Compressive atrenfth) PSI 1800 2800 3351
? Day fllnlmuu Compressive Streni~h, ~SI 2800 2800 ~ 420~
False Set - r~n&l. H~G~Dvu ~trcent S0
STATE OF TE~S ELLIS
J.R. ~ens , bein~ dul~ swo~ de~ses ~d sa~s; tha~ he is Chief Chemist of
Tex~ Induskries, Inc., ~ment Diwision, who prepped %be above
that the ~e is true ~d correct.
S~s~i~ ~d swor~t~ef~ me ~his 30th da~ of January
Construction Products Division
~ W.R. Grace & Co.- Conn.
11052 Shady Trai~
Suite 208
Dallas, TX 75229
February 26, lg91 (214)35~3500
Texas Industries
7610 Ste~ons Freeway
Dallas, TX 75247
ATTN: Dana Link
Gentlemen:
This is to certify that WRDA with Hycol, a water reducing admixture
supplied by the Construction Products Division, W.R. Grace & Co., is
formulated to meet the requirements of Specifications for Chemica!
Admixtures for Concrete, ASTM Designation C-494 as a Type A Admixture
and the Standard Specifications of the Texas Highway Department.
No chlorides or halogens are added to WRDA with Hycol as functional
ingredients during manufacture.
Material supplied for the above referenced project is identical in all
respects, including concentration, to the one originally submitted to
and approved by the State of Texas, Dept. of Transportation.
The foregoing is in addition to and not in substitution for our standard
conditions of sale as printed on the reverse side hereof.
Very truly yours,
District Manager
Concrete Admixtures
Authorized Signature
~/jk
Sworn to and.subscribed~e~ore me the undersigned,
on the ~ day
'
'
Construction Products Division
~ W.R. Grace & Co.-Conn.
11052 Shoddy Trail
Suite 208
Do,las, TX 75229
t~ebruar~ 26, 1991 {214)35~3500
Texas Industries
7610 Stemmons Freeway
Dallas, TX 75247
ATTN: Dana Link
~en[lemen:
This is to certify that Daratard-17, · water reducing, set retarding
admixture, supplied by the Construction Products Division, W.R. Grace &
Co., is formulated to meet the requirements of Specifications for
Chemica! Admixtures for Concrete, ASTM Designation C-494 as a Type B & D
admixture; and the Standard Specifications of the Texas Highway
Department.
No ch[orides or halogens are added to Daratard-17 as functiona!
ingredients during manufacture.
Material supplied for the above referenced project is identical in all
respects, including concentration, to the one originally submitted to
and approved by the State of Texas, Dept. of Transportation.
The foregoing is in addition to and not in substitution for our standard
conditions of sale as printed on the reverse side hereof.
Very truly yours,
District Nanager
Concrete Admixtures
Authorized Signature
KM/jk
Sworn to and. subscribed ~e~re me the undersigned,
ary Pub~)'c /
¢onstfuctlon Products Division
~ W.R. Grace & Co.- Conn.
11052 Shady Trail
Suite 208
Dallas, TX 75229
February 26, 1991 [214)3f~3500
Texas Industries, Inc.
7610 Stemmons Freeway
Dallas, TX 75247
ATTN: Dana Link
Gentlemen:
This is to certify that Daravair M, an air entraining admixture,
supplied by the Construction Products Division, W.R. ~race & Co., is
formulated to comply with the requirements of Specifications for Air
Entraining Admixtures for Concrete, ASTM Designation ¢-260 and Section
437 of the Standard Specifications of the Texas Highway Department.
Material supplied for the above referenced project is identical in all
respects~ including concentration, to the one originally submitted to
and approved by the State of Texas, Dept. of Transportation.
The foregoing is in addition to and not in substitution for our standard
conditions of sale as printed on the reverse side hereof.
Very truly yours,
Kurt Melby
District Manager
Concrete Admixtures
Authorized Signature
Sworn to and subscribe~ m~~, the un dersigned,
on the ~L day of , /ff~, A.D.
y Publ~c~
TEXAS INDUSTRIES, INC.
QUALITY CONTROL DEPT.
AGGREGATE SIEVE ANALYSIS
Date: 03/14/91 # 25 Tests Production Facility: BR!DGEPORT
Size #: 57 Grading Designation: ASTM C-33 1" - ~4
Project: ***** ALL JOB5 ***** 5ample Location:
Steve J Cumulative Cumulative Cumulative Required Specification
SizeI Wt. Retatned % Retatned % Passing , % Retatned % Passing
1.5"
I
1.0" 1.15 98.85 0 - 5 95 - 100
3/4' ' 14.67 85 ._33
1/2" 56.19 43.81 { 40 - 75 25 - 60
3/8': 80.75 19.gS
~4 97.21 2.7g 90 - 100 0 - 10
f8 98.58 1.42 g5 - 100 0 -
~0
d30
f40 -
~50
ItO0
*gO0
100% of 25 tests: Size 57'Plant: BRIDGEPORT Job: ***** ALL JOBS
I IIIII I I I IIII
TEXAS INDUSTRIES, INC.
QUALITY CONTROL DEPT.
AGGREGATE SIEVE ANALYSIS
Date: 03/14/91 // 25 Tests Production Facility: FERRIS
Size //: 33 Grading Designation= ASTM C-33 FINE AGG.
Project: ***** ALL JOBS ***** Sample Location:
Sieve Cumulative I Cumulative Cumulative Required Specification
Size Wt. RetainedI % Retained % Passino % Retained % Passtn(i
1.5'
1
3/4'
1/2'
3/8'
//4 2.41 g?.Sg 0-
//8 1).80 82.20 0- 20 80- 100
//10
//16 31.22 68.?8 15 - 50 50 - 85
#30 42.50 57.50 40 - 15 25 - 60
~40
~50 74.42
~100 96.45 3.55 gO - 9B 2 - 10
~200 gg. 34 0.66
Pan Wt. 2.65 Fineness Modulus
S amp leU By:
100% of 25 tests: Size 33 Plant: FERRIS Job: ***** ALL JOBS *****
Summary of Ratin
IvILNIMAL HAZ,ad~ No siEnif:icant risk to health 0 ML'NL%LAL Materials thai are normally stable, even
HAZARD under fire conditions, and will nol react
SIJGHT HAZARD Irrital~on or minor ~.ersible with water
injury possible
I SUGHT Materials the! are normally stable but
MOD£1L~T'E HAZARD Temporary or minor in}ury I'LAZ. ARD can become unstable at high
may occur temperatures and pressures, These
materials may react with water but they
SERIOUS HAZARD Major injmy likety unless will not release ener~.' violently i
prompt acdon is taken and
I
medical meat~nent is given 2 MODERATE Materials that. in themselve.~ are I
SEVERE HAZARD Life-threatenin& major or HAZARD normally unstable and will readily undergo
violent chemical change bi. ii will
permanent damage may detonate. These. materials may
result Imm single or repeated react violendy with water
lexposures
3 SERIOUS Materials tha~ are capable of detonation
Nk~e- Lbe of an a~en~ f'~ or o~her d~nbaon/ndr,.azes ~t Ii, em m,~y be ]'[AZA]~ or ex'plosive reaction but require a
cra'on,, he~,'~ eaa.-'u pe. ee.m .~e s~kr.,. ~ on me pax~ rdmn8 inidatin8 souw. e or must be.
heated und0r con§nement before
11. ~I]JTY ~ initiation: or materials thai react
R~'FI~G explosively ~th water
~ Materials thai am normally stabl~ and 4 SEVERE Materials that are readily capable of
HAZARD will not bum unless heated HAZARD detonation or explosive decomlx~sidon
at normai temperardres and pressures
SLIGHT Materials that must be preheated before
HAZARD ignition will occur. Flammable liquids in
this categor, v will have flash points {the IV. CH]~OI~IC
lowest te.w. perature at which ignition will
occur) at or above 200~ F (NFPA Class
mR) Chronic health effecL~ are not rated because of the complex issues
involved and ~he lack ol standaa:lized classificatioas and tesc~
MODERATE Material that must be moderately However, ba~d on information provided on the MSD$.
HAZARD heated before igrJtion wi|l occur, presence of chronic eft'ecL,~ mai,. be indicatt;d by (I} use of an
including flammable liquids with flash asterisk (*) or other de~i~p~atio~ after the health hazard
points at or above 100 F and below correspondmato other information tha~ may be availablu: oft2) use
200 F (NFPA Class I] & Class ~IA) of wri~n waminas in the white ac. cdon of the It}diS label.
SERIOUS Materials capable of i~idon under
HAZARD almost all normal temperalum V. PERSON~ PR~
condil~ons, including flammable liquids
with flash points below 73 F end boiling
points above 100 F as well as liquids The 'X' in the pe~onai prolm:tion bkx:k illdit:alt:s thai the type
with I]a~h points between 73 F -,nd pensona] ppotect~on, required when wmLin8 with this material, will
100 F (NFPA Class lB and 1C) be the decision o[ Um customer/supervisor.
SEVERE Very flammable Bases or very volatile
HAZARD flammable liquids with flash points
be]ow 73 F and boilinB points below
~00 F (NFPA Class lA)
,'"' CONCRETE WARNINGS CAUSES iRRITATION --
" lIE&DY.MI," Ave'id GontBct with eyes, skin, end
r
/
~Mmam, m, I) hlndllflo. Expolure may reiult In
!
SHEET
V~ Folllsnd cement.
~ TEXAS INDUSTRIES, INC. -
SECTION I --IDENTI~
INAME Texas Industries, Inc. .I 81~ Oirpenter Freeway, Dillml, Taxis 75247
~214) ~7-31~ I Environ&shill Man~ger I November, 1~5
~MMON NAME iUSED ON LABELI J FO~Mu~
~ldy.MIx Concrete ~Mixture of Po~llnd cement, wiser, aggregate lnG/or SenD.
D~e not apply ~* not ~pply I to control letllnO properties.
T~DE NAME ~ 5YN~NYM$
R~ady-Mix, concrete mix. concrll., wit concrete
SECTION 2
I
HAZAR[)OU$ COMPONENT CA~ I ",, ('rYPlCAL) TLV (UNITE) Pl~L (UNIT~,I
Aggtegatels&nd:
Ouarlz 14~08-60.7 ' See below See below
Cristobailte 14464-46-1 ' See below See ~elow
Portland cement 65997-16-1 · 10 mo/m= 15 mo/m'
"Varies depending on product
10 mglm~
TLV(quartz) m - PEL (quartz)
% resplrablo quartz + 2
TLV (crlatobaltte) - one-half of TLV for quartz m PEL (criitoballte)
TLV: Threihoicl Limit Value established by the American Conference of Governmental Induatr~&l Hygianliti, lg85.55.
,O,~,N.'- ~~,
~ee not apply I Approximately 2.4 J ~es n~ apply
~RCENT VOLATILE BY VOLUME 4"~} I VA~ DENSITY (AiR. 1) I EVA~T~ RATE ( IUWL AC~AT~ · Il
Elsentiltly 0 ~ ~e, not Ippty ] Does not ~pply
~LUBI.ITY IN WATER ~ REA~IVITY IN WATER
SIIGM (0.1 ' 1.0%) ~ WIl~ not tvolvl fl~mmible or toxic geee~
A~ARANCE AND O~R
Gray, mud-Ii,e, vllGOUl lubst~nce. No odor
J SECTION 4 -- FIRE AND EXPLOSION DATA -!
Fi_AS*I POINT I F&.AMMABLE LIMITB IN AIR i% SY VOLUMEI
Will not ignite t cOWEn. Does not apply uPpeR Does not apD!y
EXT!NGUIENING ME(3~A
Does not apply
~ImEOmAL FIRE FKiHTIHG I)t~CEDU~'~
None
UNUEUAL FiRE AND EXPLOSION HAZARD6 i AUTO I~NITION TEMPERATURE
] Does not apply
None
II ~. I II IIII1! .11 ....... I
SECTION 5 -- HEALTH INFORMATION
$1GN~ AND SYMPTOMS O~ EAPOSiJRE ..
ACUTE OVE~X~SURE-- Contact with the akln or eyes may result in trrltaiton and/or alkali burns.
OVEREXPOSURE-- None determined
MED,CAL CONDITIONS GENERALLY AGGRAVATED BY Exg)O',',',',',',',',',~JI~E
Dermatitis or other akin clisorder$ may be aggravated by exposure.
CH'~M~CALNone On COMPONENT LI~¥EC A~ CARClN~EN OR ~TE~TI~L CA~IN~EN ,I N=~ Yes ~NO]~ ~D Yes ~No jlOS"~O Yes ~No
OTHER EX~S~RE ~IMiT~
None
EME~ENCY AN~ FIRST AiD ~E~& .
EYE CONTACT: Immediately flush eye~ with large ~u~ntlfles o~ water for ~l lea~t 15 mtnute~. Con~ult a p~y~lcian. SKIN
CONTACT: Immediately w~sn skin thoroughly with 8gap and warm.
I SECTION 6 -- REACTIVITY DATA
STAB;L~TY ICONDiTION$ TO AVOI~
Unstable Stab!e V* J Does not app!y
INGOMR'A'f ASlLII¥ IMATER~At, S TO AvOiD}
Mater,al Is highly alkaline. Conlact with strong adds may produce a violsnl, exothermlc reacllon Ind may evolve toxic gists or
~R~ DEC~SJTION ~T6 vipors. ~epending upon the icld Involved.
D~s not apply
HAZARDOUS PO~,¥MERIZAT~ON m l COND~TION$ TO AVOID
May Occur _ Will ~ol Occo~ ~[Does not apply
STEP~ TO BE TAKEN IN CASE MATERIAL IS LEAKED OR BPlLLEO
Ciasa-up of ~pllts may require personal protective e~ulpment to prevent dust ex~Bure~ and protect Igllnlt alk~ll burns or
irritation. See 8~tion 8
WASTE ~S~SAL METHOD
tf this material, aa provided by the man~faclure~, become~ a waste, It ~oe~ not meet the Criteria of a hazaraous
~etln~ by the Environmental Protection Agency under the authortly of the Relource Con.emltlon and Recove~ Act (40 CFR
261). Dispose of In accordance with Federal, Slate and Icca! r~utatlon,.
SECTION 8 -- PERSONAL PROTECTION INFORMATION
E~R~TORY RROTECT~
Not necessary un,er condltion~ of normal u~e.
~ENTILATI~
Not necesna~ MaSer condltona of no~al uae.
~ROTE:YIVE GL~ES IEYE P~TECTi~
Rub~r, PVC, Neoprene, or other Imperious mitertBl ] Goggle8
OTHER P~TECTIVE ~LOTfllNG ~ EQUi~ENT
Rubber high top b~t~, ira ~leev~ ~nd Ipron, when necessity lo prevent ~kln con~ict
SECTION "-- SPECIAL PRECAUTIONS
~ECAUT~N~ 10 BE TAKEN IN HANDLING A
Shoul~ ~ ~andled In n manner to prevent contact with strong acids,
None