ML20127B871
| ML20127B871 | |
| Person / Time | |
|---|---|
| Site: | Waterford  |
| Issue date: | 07/01/1977 |
| From: | J.A. JONES CONSTRUCTION CO. |
| To: | |
| Shared Package | |
| ML17198A241 | List:
|
| References | |
| FOIA-84-455 W-SP-7, NUDOCS 8506220079 | |
| Download: ML20127B871 (27) | |
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. . Procedure No. w-sp.7
. EEA5:0 SER'.'10E3 J. A. JONES CONSIRUCTION COMPANY
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SPECIAL PROGESS PROCEDURE Of.E.g.'.E,.I.?. u c.9 _.
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. FOR This D ecum.:..t i:: . .-
-j.,in.r2 witneat eomm.m REPAIR AND CURING OF CONCRETE . - a..i.~.a w;in c:r,-.nt as REPAIR FOR PLACEMENT 499502-10B .
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ENGINEERING QUALITY ASSURANCE CONSTRUCT 10N REV. DATE APPROVED BY DATE APPROVED BY DATE APPROVED BY DATE
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PAGE 1 0F 8 J. A. JONES CONSTRUCTION COMPANY PROCEDURE NO*
SPECIAL PROCESS PROCEDURE , , y,gg,7 REPAlR AND CURING OF CCNCRETE REPAIR FOR PLACEMENT REV. NO. 7 T ITLE *-
499502-10B & DATE9/16/76 -
PROJECT TITLE: WATERFORD SES UNIT h0. 3 CONTRACT NO. W3-NY-4 1.0. PURPOSE To outline methods used by J. A. Jones Construction Company and Subcontractors for repair and curing o.f concrete repair for Placement 499502-108.
?
2.0 SCOPE -
This procedure'incledes the requirements to be used by J. A. Jones Construction Company and their Subcontractors in the concrete repair of Placement 499502-108.
R-2 3.0 REPAIR SEQUENCE R-4 3.1 The repair work shall be as follows and performed in the sequence as directed by the Engineer.-
R-I 3.1.1 Epoxy Pressure Grouting Cored Holes with Cracks.
3.1.2 Filling of holes not in crack area.
R-1 3.1.3 Pressure grouting voids and horizontal cored hole #25 in West face .
R 3.1.4 Repair.gf too surface shall be performed as directed by the Eng i neer. ,
Waterstop embedment may be performed at any time.
R-2
4.0 REFERENCES
4.1, Ebasco Services, Inc. SpectfIcatIon IOU-1564.472, Section iI, latest revision, " Concrete Placement, Curir.g and Finishing".
4.2 ACl-503, Guide for use of epoxy compounds with ~concret'e. -
4.3 Sika chemical Company brochure for'"Sikadur Epoxy Adhesives". Appropriate sheets attached. ,
R-7 4.4 J. A. Jones Construct'lon Company Work Procedure, W-WP-7, " Concrete Flacing ,
Curing, Finishing and Repair."
4.5 J. A. Jones Construction Company Work Procedure, W-WP-II, " Waterproofing".
5.0 RESPONSIBillTIES 5.1 Ebasco Services, Inc. Is responsible for supplying all materials, receiving inspection, testing and documentation o-f such tests as required by Reference 4.1 to support J. A. Jones Construction Company and their Subcont ractors in performing thei r work.
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. J. A. JONES CONSTRUCTION COMPANY -
PROCEDURE NO.
SPECIAL PROCESS PROCEDURE
W-SP-7 REPAlR AND CURING OF CONCRETE REPAIR FOR PLACEMENT REV. NO. "P TITLE * *
& DATE 9/t6/76 -
499502-108 _.
PROJECT TITLE: WATERFORD SES UNIT NO I CONTRACT NO. W3-NY-4
__ 5.2 J. A. Jones Construction Company and their Subcontractors are responsible for forming, placing aggregate, . grouting and curing of cement pressure grouted area, the epoxy pressuring grouting for sealing cracks and the surface preparation and topping and finishing of top surface as required .
by this procedure. - -
-
- 1 TOP SURFACE PREPARATION ,
6.0 PROCEDURE 6.1 J. A. Jones Construction Company Engineering shall map the surface of the '
entire pour delineating the areas that can be made to meet the required elevation and finish by grinding and the areas that must be chipped out '
to sound concrete and topped. -
6.2 The areas requiring chipping and topping shall be chipped down to a minimum of one and one-half inch (It') below required elevation. o t- 1 6.3 After chipping to sound concrete and prior.,to any topping or grin Ing of other area, J. A. Jones Construction Company Engineering shall notify Ebasco Engineering that the. area is ready for inspection. Any area containing unsound concrete shall be Inspected by the Windsor Probe method. in ver-Ifying the concrete soundness, the equivalent average 28 day compressive strength shall not be less than 5000 PSI and none of the equivalent com-
.pressive strengths shall be less than 4600 PSI.
1-2 6.4 Areas requiring grinding only to produca an acceptable surface shall be ground with suitable grinding machines un.til' acceptable _ by the Engineer, 41 ' 6.5 The surface of the chipped out area shall be cleaned and free from standing water, then coated with a neat coat of Sika Hi-Mod' Epoxy mixed and applied per manufacturer's requirements. J. A. Jones' quality Verification to verify and document the acceptance of epoxy material as to shelf life, mixing and application. .
R-1 6.6 After neat coat of epoxy, place 4000 PSI Class AA Concrete using pea . gravel as . coarse aggregate to required elevation and finish as required by approved construction drawings. ,
6.7 After the required finish has been obtained,'c'ure per requirements of Reference 4.1 and 4.4.
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JONES CONSTRUCTION COMPANY I PAGE 3 0F 8 -
. 'SPECIAL PROCESS PROCEDURE PROCEDURE NO.
W-SP-7 TITLE: REPAIR AND CURING OF CONCRETE REPAIR FOR PLACEMENT REV. NO. 7 '
499502-108
- 8. DATE 9/16/76 PROJECT TITLE: WATERFORDSESUNITNO.hCONTRACT NO. W3-NY-4
.._ , WATERSTOP EMBEDMENT 7.0 PROCEDURE 7.1 PREPARATION 7.1.1 Detemine area to be repaired. Ares shall be detemined by estimating workable area that can be worked, based on " pot life"
. and required cooling time if repair requires more than one inch (l") thickness, Reference 7 3.2.
7.1.2 Clean area to be work'e'd as follows: .
. 7.1. 2.1 Chip to sound concrete. ,
7.1. 2. 2 Surface must be dry.
'7.1.2.3 Remove all dust, laitance, grease, and other oreign ,
pa rti cl es. ,
7.1.3 Straighten and support waterstop as required.
- 7.2 MIXING -
- 7. 2.1 .
Mix Sikadur-Hi-Mod Gel two (2) parts epoxy per manufacturer's recomendation s. Amount to be determined by area to be worked.
7.2.2 Measure Colma Quartzite Aggregate and mix one (1) part Sika-HI-Mod Gel epoxy to one (1) part quartzite '
Aggregate. Add aggregate slowly to binder while mixing.
- 7. 2.3 Do not attempt to use after " pot Ilfe" has expired. By adding aggregate, it will add approximately five (5) minutes to " pot life".
73 APPLICATION
- 7. 3.'l Apply prepared epoxy mortar to embed waterstop a.s required per attached sketch, Appendix A.
7.3.2 Apply, mortar not to exceed one inch (l") thickness. if required mortar thickness exceeds one Inch (1"), allow preceeding layer' to
, cool before applying second layer. Coolness can be determined when, the mortar becomes hard. It should be cool, approximately i
one (1) hour after mixing.
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J. A. J0flES C0!1STRUCT10ft COMPANY I PAGE 4 0F 8 -
Sf'ECIAL PROCESS PROCEDURE PROCEDURE NO*
g gp,7 T ITLE *. REPAIR AND CURING OF CONCRETE REPAIR FOR PLACE!ENT 499S02-10B REV. NO. */ '
& DATE 9/16/76 '
PROJECT TITLE: WATERFORD SES UNIT No. 3 CONTRACT No. W3-NY-4 7.3.3 When more than one (1) layer is required, a neat coat of Sikadur-Hi-Mod epoxy to preceeding layer before applying additional layers of mortar is not required. ~
7.4 CURING ..
. s 7.4.1 None required. .
NOTE -
DO NOT EXCEED ONE INCH (l") LAYER AS NOTED IN 7.3.2' ABOVE.
REPAIR OF VERTICAL CORED HOLES WITHOUT CRACKS ~
8.0 ' PROCEDURE ,
-4 8.1 Thoroughly clean and.dewater all holes remaining after epoxy pressure f grouting cored holes with cracks has been completed. ,
8.2 Coat inside surface of hole and surface of area chipped out to expose reinforcing steel with Sikadur-Hi'-Mod epoxy. The epoxy to be mixed and applied per manufacturer's. reconsnendations. J. A.. Jones' Quality Verification personnel is to verii"y and document epoxy acceptance as
- pertains to shelf life, mixing and ap'pli' cation.
-1 8.3 In accordance with Reference 4.1' and 4.4, fill holes with[4000 PSI ~ Class AA
-3 ,
concrete in layers and vibrate as. reiguired to consolidate and finish to match required surface texture. .
- 8.4 Cure as required per ' Reference 4.1 and 4.4. ~'
PRESSURE GROUTING VOIDS AND HORIZONTkL CORED HOLES NO. 25 IN WEST FACE 9.0 PROCEDURE 9.1 J. A. Jones to inspect an'd document both North and South large void has been chipped,to sound concrete. All'su' rfaces of existing concrete in both North and South large void shall be coated with a rieat coat of Stka-Dur Hi Mod epoxy, mixed and applied in accordance with manufacturer's recommendations prior to the placement of fresh concrete. ,
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.. . J.. J0!!ES CONSTRUCT 10!! COMPANY .
PAGES OF 8 PROCEDURE NO.
,SPECIAL PROCESS PROCEDURE w.SP-7
- T ITLE *.
REPAIR AND CURING OF CONCRETE REPAIR FOR PLACEMENT REV. NO. 7
- 499502-10B & DATE 9/16/76 -
PROJECT TITLE: WATERFORD SES UNIT NO 3 CONTRACT NO. W3-NY-4
~
R-5 ~"9. Form North large vold from the bottom toward the top covering approximately three forths (3/4) of the large vol'd. Prepare upper one forth (1/4) of form to be installed after the concrete for the bottom three forths (3/4) has been placed. The top of the form must have a " birds mouth" of sufficient size and height to assure canplete fill Eng of the void with concrete and
' provide access for vibrators and openin'gs for yenting all air. Place the
. concrete using " birds mouth'l and chute or by placing pump hose to the rear
. of the void. As the concrete is placed and c'onsolidated by vibration, continue .toward the front of the vold. Place concrete at a low rate of placement to allow sufficient time for consolidation and removal of air.
By starting .the placing at~ the r.sar, the air will be forced out the front.
After the large opening of the void has been filled and consolidated, add forms ap required until concrete cannot be placed and vibrated into the large opening of the void. Then add required forms *and " birds, mouth" and place concrete through the top ,of the void at the surface of the slab.
. Only place at a rate that can be consolidated. Fill the entire void including the void on the surface and the drilled' hole from the surfa;e into the void. Add chamfer strip and finish exposed surface as required by .
apprdVed .,
drawings and. specifications per Reference 4.1.
i, R-5 9.3 Form only the large portion ' South vold approxinately half way up. Form the top half in a manner that will. allow addin,g forming as the placing continues -
toward the top of the void. Place concrete us,ing " birds mouth" and chute or pump hose. Start placing and consolidating by vibrating at the. rear of the void and continue toward' the'frpnt. Starting at the rear will force air out the front of the void. Conti,oue. placing, adding forms with " birds mouth" until the entire void is full 'and consolidated. Place concrete at
'a, rate that can be consolidated. s Stop this placing . operation at the top of the large void. The shallow portion.of this void shall.be . repaired per Paragraph 9.4. Fill the drilled hole from the surface into the void, consolidate and finish surface as required by approved drawing and specificatic ns '
per. Reference 4.1. Place form over 'the large deeg portion of the void only.
1-5 9.4 All other volds on the West face shall be repa rred by coating surface with Sika-Dur H1' Mod epoxy, mixed and' applied per manufacturer's recommendations, theh dry packed per Reference 4.1.
R-! 9'. 5 Cure by leaving forms in place to keep in moist condition. Areas not fonned and the top surface shall be cured with burlap and water per Reference.4.1 and 4.4. ,
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J. l... JONES CONSTRUCTION COMPANY PAGE 6 0F 8 _
PROCEDURE NO.
.SPECIAL PROCESS PROCEDURE **
W-SP-7 I i
EPAIR AND CURING OF CONCRETE REPAIR FOR PLACEMENT
- TITLE REV NO. 3r l 499502-108 & DATE 9/16/76 i
, PROJECT TITLE: WATERFORD SES UNIT NO. 3 CONTRACT NO. W3-NY-4 t-5 - 9.6 Pack hole number 25 as located on sketch, Appendix B, with bagged, oven i dryed pea gravel. Install steel plate plug in front of opening which contains two (2) one forth inch (1/4") NPT pipe nipple, one for fill and one for vent. The . fill nipple shall have a one forth inch (1/4") NPT -
pipe attached long enough to reach the. far back of the hole. The plug l shall be installed with the vent at th'e top. Install the' plug using
,. Sika Set Plug. Epoxy grout the hole using $lk'a-Lo Mod LV applied with -
a, pressure pot. Apply epoxy with vent open until all air has been renoved.
When air is removed, close vent and hole 20 PSI pressure until refusal of l material or 15 minutes. After epoxy has cured for a minimum'of 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, j chip out plate plug and repair. surface per Paragraph 9.4.- )
l
.- 6 97 Mter curing has been completed on West face, remove forms and apply waterproofing over West face of placement 10B as shown Appendix E, dated September 15, 1976, per J. A. Jones' Work procedure, W-WP-il,
. '"Wa te rp roof ing". An additional twelve' inch (12") wide layer shall be ,
. ' Installed over the exposed edges of the. first layer. . All exposed edges shall have a trowelled bead of mastic applied after the memb'rane installatic n is c~mplete.
o Terminate bottom and top of waterproofing in reglets as detai le4' In'atta.ched memo ' dated July 28, 1976, from E. J'. Gallagher to J. O. Booth ,
and sketch. .
. EP0XY PRESSURE GROUTING CORED HOLES WITH' CRACKS
-2 10.0 PROCEDURE 10.1 All equipment required for this procedure shall be collected and checked out. A dry run shall be performed using water for the grout, pumping against a closed valve to assure the equipment is in good working order.
Special note shall be made of the pressure gauge and relief valve to assure correct operability. Calibration of pressure gauge is to be verified and documented. ,
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,', ,, J. A. O S CONSTRUCTIo.. COMPldY PAGE 7 0F 8 FRUOGUh 60. j r,;CTRUC,TICM 1 CnX PRCCEDURE W-SP-7 i IITLE' REPAIR AND CURING OF CONCRETE REPAIR FOR PLACEMENT EEY' NO !
& DAIF: 7 499502-108 9/16/76- i'
?ROJECT TITLE:
WATERFORD SES UNIT NO. 3 CONTRACT NO. W3-NY-4 10.2 The Sikadur-Lo-Mod LV epoxy and bagged pea gravel shall be ordered, received i and approved for use, j 2
+
t-4 10.3 Cored holes Numbers 7, 9, 14, 15, 18, 19, 21, 22, 23 and 24 which have,been j
.deterinined to contain cracks by visual examination of cores and are located ;
on Appendix "B" shall be cleaned of all foreign material an'd free of all {
standing water, before any other grouting operation is started. ,1, 10.4 An expanding plug as detailed on attached sketch, Appendix "D', shall be V g
' fabricated for each hole to be pressure grouted, and coated with wax to i prevent adherence of the epoxy. Each plug sh'all provide a fill port and I
, a vent. The fill port shall be provided with a quick coupling and the vent with a cap or valve for venting. The supply line between the pressure l pot and quick coupl.ing shall be provided with a sight glass for observing j flow of epoxy. -
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10.5 The grouting operation shall begin with ' hole num'ber 24. Assure that all '
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holes are clean and dry, then pack hole number 24 with pea gravel from one f' of the sealed bags. When the hole has been packed with the paa gravel, 4 install the plug, as provided in 10.4 ebove. ~ '*i;
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-4 10.6 Mix the Sikadur-Lo-Mod LV. epoxy per manufacture: s reconsnendations. 8 Mix only- l the amount that can be used in approximately 15 minutes or as directed by the Sika representative. Place .the container of epoxy into one of the '.
i paint pressure pots which has been connected to the quick coupling in the :
plug in hole 24. ' Apply air pressure as directed by Sika representative ;
-(approximately 10 PSI) to pressure pot and observe flow of epoxy in sight I
-glass. When the epoxy runs out, switch grout supply line to other pressure -
, pot and continue grouting operation. Clean first pressure pot grout supply '
line with Sika Equipment Cleaner 650 while additional epoxy is being mixed.
Continue this switching and mixing o,peration until epoxy is observed passing i into one of the adjacent cored holes or abil,ity to move epoxy has ceased. . If epoxy cannot be moved.by the 10 PSI pressure, increase the pressure by 5 PSI ..
increments until the epoxy begins to move' or until 25 PSI has been obtained. '
if the epoxy cannot be moved at 25. PSI hold this pressure for 15 minutes. - ,
-4 10.7 f f epoxy is observed passing into one of. the adjacent cored holes, continue .i to hold pressure on the first hole, mix additional epoxy and fill hole which '
epoxy was. observed flowing in to, approximately half full with neat epoxy, -
pour small amounts of pea gravel into the hole and " rod" into the. neat epoxy, continue adding neat epoxy and pea gravel untII hole is full. When hole is full, install plug as provided.in 10.4.
Open vent in plug and' continue i
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CCCETRUC'CCN 170nK PROCEDUr2 w_sp.7 !
I IIT:2: . P2V. I;0 i REPAlR AND CURING OF CONCRETE REPAIR FOR PLACEMENT 7 499502-10B
& pfgg; 9/16/76 9
?ROJECT TITII: i WATERFORD SES UNIT NO. 3 CONTRACT NO W3-NY-4 [
pressurizing first hole untiI second hole is full and air is vented out vent hole. if connection between the holes is not of sufficient size to :
' pressure the second hole in approximately 15 minutes, after pressure has been increased as outlined above, then apply epoxy to second hole using second pot. If epoxy is observed entering a third ho.le, fill it with neat epoxy and pea gravel as above. Continue to pressure second hole if pot had to be~ connected io pressurize it, if not, then connect pot to second !
hole and apply pressure in 5 PSI increments as outlined above. Disconnect i pot from first hole. Continue this filling and pressurizing operation until 1 all connecting holes are grouted and pressure maintained for 15 minutes.
Should epoxy be observed reaching any surface outside cored holes, release .
pressure and seal opening with Sika set plug then resume pressure. !
-4' 10.8 Holes without conne'cting cracks shall be grouted by cleaning and filling with -!
neat epoxy and pea gravel and pressurized as outlined in Paragraph 10.6 above. j
-4
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10.9 Remove all plugs and clean plugs and equipment with Sika Equipment Cfeaner 650. . i
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- 4 ,10.10 After epoxy has set and at time of filling of holes which did not contain cracks, fill the remainder of the holes using the procedure for filling . ,
{
cored' holes without cracks, Paragraph 8.0 above.
?
- -5 11.0 ATTACHMENTS , .
l
- 11.1 Appendix A (Diagram of application of epoxy mortar to embed waterstop.) i
. I 11.2- Appendix B (Core Locations - Concrete Placement 499-10B). !
?
Appendix C (Forming for West volds) DELETED. '
.-5 11.3 ,
11.4 JAppendit D (Detailed sketch of expan[fing pfug)., I 11.5 Sika Chemical Data Sheets .
'i ,
11.6 Memorandum (To J. O. Booth from E. J. Ga.llagher dated Jul,y 28,1976).
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-6 11.7 Appendix E (West Face of 108 Sketch) I!
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. APPENDlX A -
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- APPENDIX B
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- /,, A ADHCSIVCS _
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, A SU N High-modulus, high-strength, cn3 --
A j moisturc-insensitive epoxy adhes,ive l
l SIKA CHEMICAL / LYNDHURST, N. .J. 07071 !
DESCRIPTION
- Sikadur Hi-Mod is a,100%-solids, 2-component, moisture-insensitive, epoxy-resin system. It is an all-purpose, high-strength, rigid adhesive designed for structural bonding of dry, can't-dry, damp, or wet structural materials free of standing water. Especially suitable for bonding fresh plastic-portland cement -
to sound hardened concrete, or, when mixed with granules, to prepare .a high-strength grout to level base plates and to anchor bolts. ,
ADVANTAGES
. Unique, non-polysulfide bonding adhesive - - Sikadur Hi-Mod-is a polysu1 fide-free adhesive for ' gluing' plastic concrete to hardened concrete.
. Righ-strength adhesive for *can't-dry' surfaces - - Exclusive formulation. -
Patented curing agent makes Hi-Mod insensitive to moisture before, during, and after cure. Reduces need for job shut-down due to wet conditions.
. Ercellent adhesive for grouting base plates and anc}cring bolts - - When Ltized j
with granules, Sikadur Hi-Mod produces a high-strength grout for base plates and to anchor bolts. '
TYPICAL PROPERTIES
, Ratio : 1 part by volume Component B to 1 parts Component A 4 Color : Component A is hazy-straw; B is amber: Mixed color: Hazy-straw. I Viscosity : Similar to heavy oil '
Shelf life: 2 years ,.
Pot life of. neat Sikadur Hi-Mod -
25 min at 73F i Tack-free (thin film) 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> at 73F !
Final cure (75% ultimate strength) ASM D-695 3 days at 73F '
..]
Ultimate physical characteristics after cure at 73F and 50% relatik humidity i Tensile strength ASM D-638 3,000 psi min Tensile elongation AS M D-638, modified '
l 54 max Compressive strength ASM D-695 10,00'0' psi min Compressive modulus AS M D-695 475,000 psi min All values approximate. Will vary with temperature and humidity.
' f PAcrAGING i f
Sikadur Hi-Mod is available in 10-gallon and 3-gallon units.
COVERAGE
- Neat - One g'a llon of Sikadur Hi-Mod covers approximately 80 sq ft on a smooth !
surface. "
s=a racouers anc mus.eso ron mmismin use E=a . arc, . , rao., enito . . oostavt racouct cautioni
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HOW TO USE.
Surface Prepsration - - Concrete: Surface,must be clean and sound. It may be dry, damp, or wet, but free of standing water. Remove dust, laitance, grease, curing -
compounds, impregnations, waxes, foreign particles, and disintegrated materials by mechanical abrasion methods such as sandblasting. Steel: Sandblast to appropriate finish.
Proportioning / Mixing - - Volumetric ratio of Sikadur Hi-Mod is 1:1 (B:A). To mix, proportion 1 part B and 1 parts A into clean pail. Mix thoroughly for 3 minutes with Sika' paddle on low-speed (400- to 600-rpm) drill until blend is a uniform straw color. Mix only that amount of Hi-Mod that you can use in 25 minutes at 73F. , ,
Aeplication - - To prepare a grout to anchor bolts or level base plates, mix Hi-Mod with Sikadur Granules. The amount of granules used should be the maximum amount
- possible while still maintaining a pourable consistency. The ratio should be approximately 1:1 by loose volume (Hi-Mod: Granules) . See technical bulletin on anchor bolt grouting and grouting base plates. j<
~
LIMITATIONS l
Do not thin Stk ur.Hi-M0d! Solvents wi11 prevent proper cure. '
$ .Use only even-dry granules to avoid encapsulation of moisture. Exposure to temp-eratiures (after cure) above 180F (dry) and 120F (wet) not recomunended. Substrate { 1 temperature must not be below 40F.
4 CAUTION
. h. l-A COMPONENT - For Industrial Use Only! Warning! May cause skin sensitization or j!
other allergic responses. Avoid inhalation of vapor. Use good ventilation partie- Li ularly if material is heated or sprayed. Prevent all contact with skin or eyes. j If contact with skin occurs, wash immediately with soap and water. In case of con- il tact with eyes, flush immediately with water and contact a physician. SPI Class 4.
1 l B COMPONENT'- DANGER! CAUSES (SEVERE) BURNS. a
. Cont' ins alkaline amines: strong. j
' sensitizer. Do not get,in eye s, on skin, on clothing. Avoid breat;hing vapor. Keep -j j
l container closed. Use with adequate ..
ventilation. Wash thoroughly after handling. .
- FIRST AID
- IN CASE OF CONTACT, immediately flush eyes or skin with plenty of water for at least 15 minutes. Remove contaminated clothing and shoes. Call .a. physician. ;
wash clothing before reuse. Discard contaminated shoes. MCA ,
i l
t WEAR PROTECTIVE CLOTHING, GOGGI.ES, . GLOVES, AND/OR BARRIER CPEAMS (
.IL t
. i i
4
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LYNCHUAST.NEW.JEASEY 07071 201-933-8801 (NJ) - 212-695-2253 (NY) ,
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'* AME Low-modulus, low-Viscosity, moisture-insensitive epoxy adhesive SIKA CHEMICAL / LYNDHURST, N. J. 07071 Sikadur Lo-Mod LV is a 1004-solids,100%-reactive, 2-component, moisture-insensitive, epoxy-resin system. Its low modulus of elasticity provides greater 'give' under stress due to impact and thermal change. Excellent for epoxy-mortar floor toppings and patching on dry, can't-dry, damp, or wet structural materials that are free of standing water. LV's also an efficient penetrating impregnation to seal dry porous substrates.
ADVANTAGES
. Unique, low-modulus adhesive for 'can't-dry' surfaces - - Patented, exclusive formulation of Lo-Mod LV makes it insensitive to moisture before, during, and after cure. Reduces need for job shut-down due to wet conditions.
. Impact , thermal-resistant toppings, patches, overlays, qzouts - - Lo-Mod LV has an approximate minimum tensile strength of 3,000 psi and a sLinimum tensile along-ation of approximately 54 for greater 'give' under stresses of impact and thermal .
change. ;
t
. Effective sealer for dry, porous concrete - - Low viscosity (lightweight oil) l enhances penei: ration of dry, porous concrete. Also seals LV-mortar toppings.
)
TYPICAL PROPERTIES
- Ratio : 1 part by volume Component B to 2 parts by vol sne Component A Color : Component A is clear straw; B is clear amber. Mixed: light straw. '
Viscosity : Similar to lightweight oil _
Shelf life: 2 years ,*
Pot life of neat Sikadur Ib-Mod IV . .
25 min at 73F Tack-free (thin film)
- 4 hours min at 73F 3 Final cure (75% ultimate strength) ASm D-695 5; days at 73F Ultimate physical characteristics after cure at 73F and 50s relative humidity ,
Tensile strength AS M D-638 3,000 psi min l' Tensile elongation ASm D-638,, modified "5%' min j compressive strength ASE D-695 7,000, psi min 250,000 max j Compressive modulus ASTM D-695 ,
All values approximate. Will vary with temperature and huriidity. ,
- i PACKAGING Sikadur Lo-Mod LV is available in 9-gallon and 3-gallon units.
COVERAGE .
t
] Impregnacien - Approximately 125 sq f t/ gal on smooth surfaces. '
As a mortar - One gallon of Lo-Mod LV mixed with 31: parts by loose volume of Colma Quartzito Aggregate yields approximately 679 cu in. of epoxy mortar. ,
n s na recoucrs aac i=unoro rom niousinia use onu . act, a av ruou cmonan . ooseen racover caur oa e - ...--. - - - -
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M'd TO USE - . __
, Surface Preparation - - Concreto: Surface must be clean and sound. It may be dry, i damp, or wet, but free of standing water. For scalcr application, substrate must r;e dyLs Remove dust, laitance, grease, curing compounds, impregnations, waxes, ]
, foreign particles, and disintegrated materials by mechanical abrasion methods. ")
Steel Sandblast to appropriate finish.*
- Proportienino/Mixino - - The volumetric ratio of Lo-Mod LV is 1:2 (B:A). 'To mix, proportion 1 part B and 2 parts A into clean pail. Mix thoroughly for 3 minutes with Sika paddle on low-speed (400- to 600-rpm) drill. Mix only that amount of Lo-Mod Lv that you can use in 25 minutes at 73F.
. Mortar - - To prepare Sikadur Lo-Mod LV epoxy' mortar, slowly add approximately 3 ~
- l. parts by loose volume of Colma Quartzite Aggregate to premixed Lo-Mod LV while continuing to mix to a uniform consistency.
Application - - Impregnation - Apply mixed Lo-Mod LV with rubber squeegee or roller to dry substrate. Allow time to penetrate. Squeegee off excess while it is still liquid. Spalled areas - Prime wit'4 Lo-Mod LV. Apply with broom, brush, or k-in.-
nap rollers. Pour mixed Lo-Mod LV into large, clean pail. Add Colma Quartzite Aggregate (approximately 3h parts by loose volume) while' slowly continuing to mix to uniform consistency. Apply mortar while prima coat is still tacky. Use tesp-
, orary or permanent screeds to strike off and level. Finish with steel trowel.
Occasionally wipe trowel lightly with water-dampened rag for smooth finish. A
- sealer coat of Lo-Hod LV should be applied for optimum results.
i LIMITATIONS i
Do not thin Sikadur Lo-Mod LV. Solvents will prevent proper cure. Not designed q for use as an adhesive for fresh plastic portland-cament mortar or concrete. Use i Sikadur Hi-Hod. ,
Use only oven-dry aggregate to avoid encapsulation of scisture. Exposure to tesp-eratures (after cure) above 180F (dry) and 120F (wet) not.reccamended. Substrate temperature must not be below 40F.
- i CIUTION . .
t A COMPONENT - For Industrial Use Only! Warning! May cause skin sensitization or .
other allergic responses. Avoid inhalation of vapor. Use good ventilation partic- .i ularly if material is beated or sprayed. Prevent all contact with skin or eyes. l l If contact with skin occurs, wash innaediately with soap and water. In case of con- j tact with eyes, flush insnediately with water and contact a physician. SPI Class 2. ,
B COMPONENT - DANGER! CAUSES (SEVERE) BURNS.
- Contains alkaline amines: strong 3
sensitizer. Do not get in eyes,.on skin, on clothing. Avoid breathing. vapor. Keep container closed. Use with adequate ventilation. Wash thoroughly after handling.
l FIRST AID: IN CASE OF CONTACT, inunediately flush eyes or skin with plenty of water for'at least 15 minutes. Remove contaminated clothing and shoes. Call a physician.
Wash clothing before reuse. Discard contaminated shoes. MCA WEAR PROTECTIVE CIO!'HING, GOGGLES, GIDVES, AND/OR BARRIER CREAMS 4 .
e l
i .
, , t.YNOHUAST. NEW lEASEY 07071 j , 201-933-8801 (NJ) - 212-695-2253 (NY) )
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SEADUR M-MOD CEL' i se. ~Ts ~'
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4 SURF" ACING 1 - . .
AGCN1s High-modulus, gap-filling, ""
- moisture-insensitivo epoxy adhesive
. . . 4 SIKA CHEMICAL / LYNDHURST, N. J. 07071 DESCRIPTION
, Sikadur Hi-Mod Gel is a 100%-solids, 2-component, epoxy-resin system. A unique high-modulus, moisture-insensitive, structural adhesive for vertical and overhead bonding and embedment - - it cures under dry, can't-dry, and wet conditions.
ADVANTAGES
. Celled adhesive for 'can't-dru' surfaces - - Thick consistency of patented
- Sikadur Hi-Mod Gel makes it an efficient gap-filler to bond irregular, non-mating,
' overhead, or vertical surfaces whether they are dry, damp, or wet - - concrete, steel, wood, stone, brick, and many other structural materials.
. Grouting mortar - - Mixed with oven-dry aggregate, Sikadur Hi-Mod Gel produces workable, sag-resistant mortar for overhead and vertical grouting.
I Ratio : 1 Part by voltane component B to 2 parts by volume r' m aant A
. Color : Component A is, milky whiter B is light brown. Mixed: light straw.
.b Viscosity a non-sag ... similar to petroleum jelly '
Shelf life: 2 years -
! Pot life of neat Sikadur'Hi-Mod Gel 25 min at 73F Tack-free (thin film) 3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br /> at 73F Final cure (75% ultimate strength) ASM D-695 3 days at 73F Ultimate physical characteristic's after cure at 73F'and 50% relative humidity '
Tensile strength ASM D-638 2,000 psi min Tensile elongation AS M D-638, modified 54 max
- Compressive strength ASM D-695 9,000 psi min Compre,ssive modulus ASM D-695 350,000 psi min All y'alues approximate. Wil'1 vary with~ temperature and humidity.
PACKAGING ,
, Sikadur Hi-Mod Gel is available in 9-gallon 'and 3-gallon units. . .
. COVERAGE ,
Nortar - - One gallon of Sikadur Hi-Mod Gel, mixed with 1 part by loose voltana of Colma Quartzite Aggregate, will yield 358 cu in. of epoxy mortar.
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, _l HOW TO USE
'Surfaee Preparation - - Concrete: Surface must be cican and sound. It 'may be dry *
$, l or damp. Remove dust, laitance, grease, curing. compounds, impregnations, waxes, '
foreign particles, and disintegrated materials by mechanical abrasion methods such-as sandblasting. Steel: Sandblast to appropriate finish.
Proportioning / Mixing - - Volumetric ratio of Sikadur Hi-Mod Gel is 1:2 (B A).
To mix, proportion 1 part B and 2 parts A into clean pail. Mix thoroughly for 3 minutes with Sika paddle on low-speed (400- to 600-rpm) drill until blend is .
,a uniform straw color. Mix only that amount of Hi-Mod Gel that you can use in -
25 minutes at 73F.
Preparing mortar - - Slowly mix up to 1 part by loose volume of Colma Quartzite Aggregate into premixed Gel. Continue mixing until consistency is uniform.
Application - - Used neat or as a mortar, Sikadur Hi-Mod. Gel may be applied with a spatula, trowel, or caulking gun. For information on bolt grouting, see technical bulletin on ' Bolt Grouting. '
LIMITATIONS ~
Do not thin Sikadur HiMod Gel! Solvents will' prevent proper cure. Not designed for use as an adhesive for fresh plastic portland-cement mortar or concrete. Use Sikadur Hi-Mod.
Use only oven-dry aggregate to avoid encapsulation of moisture. Exposure to temp-eratures (after cure) above 180F (dry) and 120F (wet) not roccennended. Substrate temperature must not be below 40F.
CAllTION ,
- A COMPONENT - For Industrial Use Only! Warning! May cause skin sensitization or other allergic responses. Avoid inhalation of vapor. Use good ventilation partic-ularly if material is heated or sprayed. Prevent all contact with skin or eyes.
If contact with skin occurs, wash immediately with soap and water. In case of con- ,
tact with eyes, flush immediately with water and contact a physician. SPI Class 4.
I B COMPONENT - DANGER! CAUSES (SEVERE) BURNS. Contains alkaline amines strong I'.
sensitizer. Do not get in eyes, on skin, on clothing. Avoid breathing vapor. Keep i container closed. Use with adequate ventilation. Wash thoroughly after handling. '
FIRST AID: IN CASE OF CONTACT', immediately flush eyes or ' skin with plenty of water I
for at least 15 minutes. Remove contaminated clothing and shoes. Call a physician. I Wash clothing before reuse. Discard contaminated shoes. MCA '
WEAR PROTECTIVE CIUfHING, GOGGLES, GLOVES, AND/OR BARRIER CREAMS O
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2 new Silta quicitsets- .
unique,iug and Sikaset Mortar are you Sikaset P of quicksets. Job-paced swiftsets, they're like no other on the market. Notjust new, they're unique. Not just j different they're better than anything you've ever used to plug a pressure leak, or pretty-up a pipe for your inspector's ' ayes.'
3 Sikaset Plug is a new, instant-setting, portland-cement seal that stops water dead! It's a ready-to-plug
~"~7 .
I:] powder...you bring the water. '
, {, '.9{g{7{ 3 Sikaset Mortar is a new, rapid-setting, portland-
'; cement patching compound. Add water, mix, go. .
u New' trigger'is key !
. 7 The accelerator for your new swiftsets is a new km, d 1 .i of' trigger.' One of a kind. Unique. Patented. Another T -) Sika first! Our organic accelerator eliminates chloride.
- 'l sulfate, aluminate, the common accelerators that gave j , , ,
JJ you fast set...at the expense of durability.
1 .
.. With your new Sikaset quicksets you get great l (I / ,7 improvement. But what you don 't get is also important f 3 ...no chloride, no sulfate, no aluminate!
e, h
- Ji Sikaset Plug and Sikaset Mortar give you the best
- j d 2 combo in the swiftset business.You get full-j
[l ~A ' !b(/7 { ,,
lj
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strength portland cement-with allits advantages-plus new long-term benefits. -
. . . = .- . ? 5 great advantages for the applicator STh e ~f s
- 1. The fastest-setting plug in the waterstop business
... stops water dead on contact.
. W' M i'.1'-
] 2. 28-day strengths in 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />. Rapid, predictable O . 6 Y set-similar to concrete-without flash set.
9 3. Extended workability for tooling...more time
{
E.i 1 '
A W -A G
. g" o between initial set-up and final ' grab.'
- 4. Gold-water, cold-weather cure-uniform setting c, - time over wide temperature ranges.
1 5. Non-toxic, non-corrosive, non-rusting.
1 22 "'M" ? '
And 6 more for owner and engineer
, 32 i 'MNIM 1. Greater durability for longer service life.
- 2. Excellent resistance to freeze / thaw attack.
l$17 hM@niE5?fE~ -
- 3. Supen,or sulfate resistance-you can specify for i sulfate-saturated soils, water-treatment / sewage plants.
- 4. Rapid gain of tensile strength to resist cracking.
, 5. 'No-cal' compounds give you the benefits
- designed and paid for.
- 6. Meets specs...already in use in concrete-pipe j plants, utility installations.
d 9- TYP! Cit 3 COMPAESSIVE STRINGTH SlKASET PLUG
] g 7 . CAIN
$ b 6--
- g 5" T
SIKASET MORTAR W/C RAfl0 0.30 A
COMPIT!T!YE COMPOUND P 2-.
g_- -#
) [
] 7 1 5 16 1 2 3 4 18 7p
. TIME IN MOURS TIMEl'NDAYS
^
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l ES-UD concrete.
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31%ASET PLUG SiKASET MORTAR All new...not another'me-too'. A great leak-stopper. l DESCRIPTION No ' flash set'. No high heat build up. Your plugs are ~
- ohesive enough to dam the leak, stay pliable for nice To give you greater quickset capability, versatility, workability. You can get as fast as a 90-second set. Sika offers you its all new Sikaset Mortar. A ready-to-And you get more than instant pressure-leak stoppage use powder. Add water...get high-strength mortar
-great ultimate strengths: better freeze / thaw that sets within 10 minutes. Enough time to work into 1 rcsistance: superior sulfate resistance.
coves, patch spalls, and touch-up your precast pieces.
Sikaset Mortar, of course, contains no chloride, no IlliERE TO USE sulfate, no aluminate...its rapid set is due to Sika's !
Jsc Sikaset Plug to stop pressure wakage and new, exclusive organic accelerator. It cures with
- eepage through concrete, brick, stucco. Great for minimum volume change. -
- ewers, utility manholes. plant basements, sumps, ,
elevator pits. pmh:, tunnels. Vertical or horizontal. WHERE TO USE
.ndoors or out. Use Sikaset Mortar to get low-shrink masonry repairs i iPIC/USE SlKASET PLUG and to patch, concrete, brick, and stucco in industrial rast... without flash-sets at twice the speed of lants, utilities precast pipe plants. Fine for asements, sumps, elevator pits, pools, tunnels,
< gonventional quicksets. , Stops leakage and seepage. sewers. Surfaces may be vertical or horizontal. Dry, ronto. Unlike competitive compounds that crumble damp, wet. Indoors or out.
.vith handling, Sikaset Plug does not flash set... ,
31ugs may be tooled and struck off without reducing SPEC /USE SIKASET MORTAR
.cnicious adhesion. Trowel-paced set-slower than Sikaset Plug-plus all Easy, e//ective-plugs are cohesive...stop leaks the advantages of workability, high strength, durability,
.vhile still soft and workable. with early holding power. Reduced shrinkage, too.
-weather use-if your mix water drops to a coof
, you still get swift set...even at ambient Shrinkage peratures as low as 35F. . The graph below illustrates drying shrinkage as a Educes water-Sikaset Plug features an outstanding percent of control. Test was based on ASTM .
.vrter reducer...you get improved long-term qualitative norms:
- hiracteristics. 150 m
Vctsatile-Plug with Sikaset Plug...you know your ,g 140_ COMnm0R y !
eak-stopper will not deteriorate on exposure even to a 8130 - -i N7 ligh-sulfate soils and water. !! '
j ulfate resistance test LSTM test, applied equally to new Sikaset Plug and a yl{-
g g so. .-
[IM
- 9 '
) ,
- 1
- ommercially available material, produced these = .
w t- J l' esults: 3 7 14 flME!N DAYS 3 7 14
' ~ ' " * *
"' "'~ '~ ~ ' f~~77 Sikaset Mortar has low shrinkage on drying...actually 10% less than !
slKAsti MORTAR COMPETITOR '
Ok !
t plain cement rnortar...and 50*'. less than competitive matenal.
, Tensile strength ,
- h. 7,f. Fo!!owing ASTM C-496 procedure, tensile splitting r -
/. tests were conducted and the following results were obtained:
ested in accordance with ASTM.C.88 7,l A (qualitative examinationi. a
-m. cube of commercially available quicksetting plug completely dis. ' E 1000 - SPtl1 TING TENS!tt VS TIME ASTM C.496 it: grated. Sikaset Plug showed excellent resistance to sulfate attack: I 800 --
shitnted no signs of detenoration. ,, a w/C aATIO - 0.30 gjggggy
.eeze/ thaw resistance test '
E g Ho" MORTAR
)ne of the most damaging attacks on concrete and N 800 -
nasonry is repeated 'rceze/ thaw. Here's how Sikaset Ng 100 2004 _
COMnmtvE -
Slug and a competitive product stood up to an even COMPOUND, nore severe test: ropid freeze / thaw cycles:
- 1 2 3 TIMEIN HOURS 7 10 20 i
.g ... Sikaset Mortar exhibits twice the tensile strength of a competitive quick-
. set. This early development of high tensile strength given you a stronger
's.* pctch with better early gtshbing' power and reduced cracking.
.. a ,'i r-"i
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'C$itPLTITOR ,
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$lKA1'll PtUC For your convenience whenordering-Ekaxes is our f. unity nanic tw the quicksetting compounrix.These nre ulucts manufact urett, warehoused, tmd ship;m.nl via computer crules.
.acclient rapiel freive ilstw remastance-tested in 4* suihum chloride An ontenng. plensc use the code numtM:rs:
alubon-Skaset I' lug withsham) 270 cycles with rero weight loss. Com. '
.acm!!y av.ul..b!c qim Lhus Imt F*a ut us weight. . Sikaset 543. Plug Sikaset 544. Mortar .
__ _ _ _ . _ __ m
s "h.
Sinset SwHisets- -
Sikaset Plug Sikaset Mortar -" 'tW "- '
di"!:':
Yield (per 20lb) 360cuin,of hardened compound .
J. rs.ll[. t,)n,e.Lp Packaging 20-Ib. 50.lb pails; 550.lb drums
- g. 3,gg ,q. , ; , f . .y.,
Shelflife 'I year...but you must keep material dry (gi . IIN(.[p E e
?I 4! ? 9*' -tB t Jot >peced set I to 3 minutes
- l 5 to 10 mmutes* N ' * '
Mising Ma quickset with sufficient clean water to obtain N M ihv consistency desired. Do not over-mis. Do not over-wet. ,.~ i g .g. g, igg, g *.;
- Do not totemper.
[
hikM,.3t'.'*} .
Surtaos Nottung complicated...just enip away sof t, detenorated. ,
-- d '
Preparation unsound substrate. Clean cavity completely. Lightly i* I.SME,TEi .
dampen substrate just pnor to application. :.pyi}g %.
Applicatson Plug minorteaks first. Wedge Mx with water (sMIC-4l. YNMF/ jD&
plug firmlyinto crack or hots.
Forlarge openings, form compound into a carrot shape, to workable consistency.
Trowelinto f y g. .. . .r NM N8If and when plugis firm, ram it into cavity. Holdin place with place. Kneed (0),g.' sMgf g. lHQ mto honeycombe .
)
hool of hand. IAt go, strike off with rubber. bEi4Mli .
flush with surface.** gloved hand.** 4,hirlp,,. . @@f,[ Ti,$li Rossal cxmtniner. Unused matenal will detenorate ,
h fapidly ifleft unsealed. I 8.N *N{f ML.@.d (fl[eJgt ,f , ft$i. J Coution Sikaset quicksets contain portland cement which is r 1
,j alkaline. Prolonged contact may irntate skin. Avoid ;. . M.th% 8.'lJ0 4 g
direct contact where possible and wash exposed skin .
- areas promptly with water. lf any of the cementitious
.)
matenal gets into your eyes. nnse immodantely and r 8 g, '
repeatedly with water '
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Sika.Firstin1910.First today. ,
g;st Sika was the first to develop quicksetting compounds. Back in 1910.' . in %fdMN Sika's leak-stopping products 'made it'...they solved problerns MQ tt'W '
...like waterproofing Switzerland's electrified-railroad tunnels. i WIN %* M M l'fl N ?
But our original compounds-and the many materials that M @'40 l copied them-often sacrificed long-term durability to develop fast D@'bhN M4if 5 set, a set kicked off by chloride , sulfate , aluminate-based -
I4.dM!M M 'M@@ !
ccc:lerators. Consequently, the average quickset was often
, inadequate for demanding applications. It could fail after a few ,
fp'WMl.
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j i
frs':ze/ thaw cycles; exposure to sulfate caused early disintegration. , Fi. .
Even today, many popular quicksets on the market still are high i @MMEW' . '"
- FW- @
i in aluminates...a chemical, incidentally, that must be removed to produce sulfate-resistant, Type V cement. Quicksets containing . . #'P%$@Fri-37 7 WI lh f" ,
this chemical, therefore, are obviously not your best choice for such projects as water-control facilities, sewage treatment plants, and I
_IMii@ f@Mkl 29 W#1? - 1
' "S$ t marine construction where incidence of sulfate is high. For the 3P.hl0@ P.6ijW mialsr:Y?>
, same reason, why patch 6,000-psi concrete pipe with a material that >
W!iEER 4a
- will disintegrate on 3 exposures to sewage water! .
Fi*6 ..
Only with Sika, with its new organic accelerator, can you get . ihlb.*
. M F 0'50 ,
' quick-ability' combined with workalfility and durability.
Your best bet is a Sikaset. Our salesmen, our dealers know their '.',
way around quickset jobs. Ask one...or contact Sika's Technical DM ? aW76"M*
Service people at 201-933-8800. w .
Q(wv,>. .
Sika Chemical Corporation Box 297, Lyndhurst, N.J. 07071 M.M. _- ..._.::r _.q : _
Phone 201-933-8801/ TWX: 710-989-0288 ,
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, i s -
MEMORANDUM .
July 28, 19'76 i
TO: J. O. Booth PROM: k
SUBJECT:
LO'UISIANA POWER AND LIGitT COMPANYg'
(
WATERF02D STEAM ELECTRIC STATION i 1980 - 1165 MW INSTALLATION - UNI $ NO. 3 CONCRETE REPAIRS FOR PLACEMENT 499S02 - 10B Attached is' a revised sketch (SK CH-163, Rev.1) uetailing tha' extent of waterproofing required on the vest face of foundation block 10B. Note that the waterproofing should extend below the effected area or to the top of'the pleistocene whichever is lower. For ease of construction the reglet is to be cut horizontally into the concrete.
~
EJC/11s p. -
cc: A. A. Ferlito .
A. M Wern s F. C. Liu R. K. Stampley W. L. Sheehan
- D. N. Calligan .
J. W. Seaver .
J. C. Ssidarini .
J. M. Brooks e
'G. J. Lambrakos - . .# #
H. W. Nelsort .
. C. White / ?
E. J. GallagherV
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! ' 4 s l'-o MOT.E : Abb AM..AbbtTlchL 12" 0F Si roTse.NE wiTH A EM Ab A ltouND '
ROU 4 b CONC. E LA E Nt. Escr5 AMb PtPES ;
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l
HEH2RA3233 , July 26, 1976 To: J. O. Booth /B. D. Fowler From: E. . Gallagh'
Subject:
WATERFORD SES UNIT No. 3 . CONCRETE REPAIRS FOR PLACEMENT 499S02-10B - The repair procedure for mat placement 10B, section 9.6, deals with waterproofing the-repaired area. The extent of the waterproofing should be such that the entire length of the west face of placement 10B be water-proofed using W. R. Grace's bituthene to a dep.th as shown on the attached sketch. This will require excavating a trench along the side of the foundation mat, preparing the surface and applying the waterproofing membrane
.according to Ebasco specification LOU-1564.475. An additional 12 inches of the waterproofing membrane with a bead of bitathene mastic should ba installed around all edges.
It should be also made clear that the repair of the' voids on the west face
-of placement 10B be made prior to concreting wall placements 565-1A, 499S04- ~~
4A-1 and 499SO4-BA-1.- These walls are exterior walls located above the voids.
. The concrete being used to repair these voids should also be allowed to reach design strength before these walls are placed.
IJG/11 . Enclosure - ' -
. cc: A. A. Ferlito (w/ enc 1)
- A. E. Wern (w/ enc 1) .
P. C. Liu (w/ enc 1) . N. Hasan (w/ enc 1)
- R. K. Stampley (w/ encl) -
W. L. Sheehan (w/ encl)
- D. Galligan (w/ encl) .
J. W. Seave'r (w/ encl) . 1 J. C. Salarini (w/ enc 1)
- l J. M. Brooks (w/ enc 1) '
G. J. Lambrakos (w/ enc 1) l H. W. Nelson (w/ enc 1) l C. White (w/ encl) - E. J. Callagher (w/ encl) t
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j . 4 APPE'NDIX E '
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