ML20127C304

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Rev 3 to Const Work Procedure W-WP-7, Concrete Placing, Curing,Finishing & Repairs
ML20127C304
Person / Time
Site: Waterford Entergy icon.png
Issue date: 03/05/1976
From:
J.A. JONES CONSTRUCTION CO.
To:
Shared Package
ML17198A241 List: ... further results
References
FOIA-84-455 W-WP-7, NUDOCS 8506220191
Download: ML20127C304 (12)
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  • Procedure No. W-WP-7

. (.).M J. A. J0NES CONSTRUCTION COMPANY p, Q , fj g 4 4 CONSTRUCTION WORK "ROCEDURE h[ /3 @

yk pub I6.,2 CONCRETE PLACING, CURING, FINISHING AND REPAIRS .

pa,,g- Q c-p4 WATERFORD SES UNIT NO.3 b

  • CONTRACT NO. W3-NY-4 ,

ENGINEERING QUALITY ASSURANCE , CONSTRUCTl0N REV. DATE APPROVED BY DATE

  • 9PPROVED BY DATE APPROVED 8v OATE O // 21-7 6 n/ $ ~- tifuA,-b$W $w Phh jf- //bibr l /I'fh'76 ofk '-, tils 0h k . h Y$ /N

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, J. A. JONES CONSTRUCTION COMPANY PACE 10F 8 PROCEDUEZ X0.

fCONSTRUCTION UORK PROCEDURE 9 ,gp,7 4

777Lg. REV. KO 3 l CONCRETE PLACING, CURING, FINISHING AND REPAIRS & DATE: 3/5/76 l

PROJECT TITLE:

. WATERFORD SES UNIT NO. 3 CONTRACT NO. W3-NY-4

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1.0 PURPOSE .  !

. l To out!Ine methods used by J. A. Jones and Subcontractors to place, cure, finish and repair concrete.

  • 2.0 SCOPE This procedure includes the requirements to be used by J.'A. Jones and their Subcontractors to comply with approved construc. tion drawings and specifications.

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30 DEFINITIONS , ,;

3.1 Water i ., ,.

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The water used for all aspects of this procedure shall be furnished and certified acceptable by thk Kngineer. 'It ahall be free from any injurious amounts of acid; alkali, salt's, sedimentor' organic matter and shall no.t

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contain bore than .1000 ppm of

  • dissolved solids and not mere than 100 ppm chloride lon. -- ,

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  • Hot Weather' -

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lbt weather Is when the dry b0lb temperatdre is above 330F and is expected

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33 Cold Weather .

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Cold weather is..when the dry b:ilb temperature licat' eir1below 40 0F and can ' '

be expected to dall icwer.

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4.0 REFERENCES

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i R-1 4.1 Ebasco Services, Inc. Spedification Ldu-1564.'45:t.,Section -11, latest revistor "C,oncre te ' P I s s enent; , , Curing and Finishing". *'

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4'. 2 J. A. Jones Procedure, W-slTP-7, " Concrete Placing, during,D inishing ana ,

Repair Inspection". - +

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.5.0 ' Rf!SPONSIBILITIES , ,

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i 5.1 Ebasco servicese Inc.*is responsible for furnishing al'1 msterials, receiving 1 inspecilch, testing and documentation of .suc.h test 45 required by Reference ,

s 4.ltc' support J. A. Jones and'their Subcontractors in performing their work

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J. A. JONES CONSTRUCTION COMPANY PAGE 2 OF 8 . ,,

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PROCEDURE NO.

CONSTRUCTION WORK PROCEDURE y,yp TITLE: REV. NO 3 CONCRETE PLACING, CURING, FINISHING AND REPAIRS & DATE:3/5/76 PROJECT TITLE:

WATERFORD SES UNIT NO. 3 CONTRACT NO. W3-NY-4

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5.2 J. A. Jones and their Subcontractors are responsible for forming, placing, curing, finishing, repairing and inspection of concrete as required 'by the approved drawings and specifications.

6.0 TRANSPORTATION t,

R-1 6.1 Convey all concrete from mixer to place of final deposit in bucket, con-tainer or conveyors to assure required consistency and plasticity without segregation or loss of slump beyond limits of specification.

6.2 Check time and nunber of drum rotations after water has been added to the coment and aggregate. Concrete must be placed in forms within one (1)

. hour or 300 rotations of drum whichever one occurs first, unless authorized by the Engineer and then time must not exceed one and -

one-half (ii) hours. .

R-1 6.3 Water shall be added only by the Engineer.

R-1 6.4 Clean all tools and equipment used in placing. concrete before and after placement.

R-2 6.5 At any time it becomes necessary to break down concrete conveying equipment for cleaning or repair during a placing operation, care shall be taken to prevent the concrete contained in the equipment from being dropped in excess of 58-O' into the placement.

6.5.1 Acceptable concrete contained in the conveying equipment may be transported by other acceptable means (skip pans, wheel-barrows, carts, etc.) and deposited in the placement by the approved method, except that . concrete must not be dropped in excess of 5'-D' or handled in any other way that would cause segregation.

Concrete that has been handled in any detrimental method shall not be placed in the placement.

6.5.2 When it is necessary to disassemble conveying equipment over the

, placement and the concrete would fall in excess of 5'-0", the i area shall be covered with plywood or other suitable material to catch the concrete and prevent it from falling into the placement. Concrete that has fallen in excess of 5'-0" or handled in any other detrimental method or that cannot be placed incthe. allowed time limit shall be removed from the placement area and discarded.

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. . J. A. JONES CONSTRUCTION COMPANY PACE 3 or 8 4 -

PROCEDUM EO.

CONSTRUCTION WORK PRCCEDURE w.wp.7 REV. NO TITLE: 3 CONCRETE PLACING, CURING, FINISHING AND REPAIRS & DATE: 3/5/76 PROJECT TITLE:

WATERFORD SES UNIT NO. 3 CONTRACT NO. W3-NY-4 70 PLACING R-1 7.1 Obtain Engineer review of equipment, layout, procedures and methody prior to placing concrete.

7.2 Discharge concrete f rom mixer into center of bucket or hopper. This

. principle of vertical discharge shall be used during all stages of delivery.

. 7.3 Deposit concrete as near as practicable to its final location.

When direct placement is not poss1ble, use suitable chutes and

" elephant trunks" to confine concrete movement. Do not allow concrete to flow in a manner that will cause segregation.

  • 7.4 use a central-bottom-dump bucket that provides positive regulation

. of amount and rate of deposit in al1 dumping positions. .

7.5 When placing concrete with bucket, spot bucket over exact loca t ion ,

then lower to just clear the concrete already in place, with bucket open. The unconfined height must not be more than five (5) feet unless approved by Engineer. Do not dump. bucket while swinging or in any manner that will cause separation or disturb previously placed concrete.

7.6 in restricted areas, place concrete in forms using barrow, buggles, cars or hand shoveling. Take care not to allow vertical drop of over five (5) feet.

R-l 7.7 Slope on chutes shall not be flatter than I to 3 and not steeper than ,

I to 2.

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R-1 7.8 Alumin ~um or galvanized steel pipe will not be used to convey concrete.

R-1 7.9 ' Obtain Engineer inspection of cleanliness prior to placing concrete.

7.10 Remove all surface water f rom forms, embeds, resteel, and adjoining concrete.

No concrete will be placed on a water covered surface.

7.11 Place concrete In successive 6 to 20 inch thick horizontal layers.

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Correct tendency to segregat,e by shoveling stones into mortar.

7.12 Bedding planes shall be approximately horizontal, except in dams or other structures where it may be required to incline the beds. Without forms, on a downward slope of about one (1) vertical to ten (10) horizontal in an upstream direction in which case the placement shall proceed in an upslope directlon.

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J. A. .JU:!EO CU;.UTI'UCT10t! CUZIPNIY PACC 4 Oli 8 4

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CO::STRUCTION llora UnUCEDUI'd w.wp.7 REV. t;0 3 TITI.C: -

CONCRETE PLACING, CURING, FlNISHING AND REPAlRS & DATE:

3/5/76 PI:DJECT TITLE: -

WATERFORD SES UNIT NO. 3 CONTRACT NO. W3-NY-4

-7.13 Compact concrete with mechanical vibrating equipment until the concrete has been consolidated to the maximum dernsity, f ree of pockets or coarse aggregate, and fits tight against forms and enbed material. .

7.13.1 Use vibrators of the high-f requency type with not less thad 6000 revolutions per minute,'to properly consolidate the concrete. '

. 7.13.2 Insert vibrators approximately every 2 feet .in the vertical position.

Remove vibrator slowly to avoid creating pockets.

  • Do not use vibrators to transport the concrete. .

7.13.3 Use vibrators to blend and meld now layer with previously placed layer. Care must be taken to assure adequate vibration. .

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7.13.4 Insure vibrator penetrates the layer being placed and also the

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layer below while it is still plastic to provide good bond between the two layers and prevent the formation "of cold joints. ,

7.13.5 care must be taken to minimize contact between vibrator and reinforcing steel. -Do not allow vibrator to contact reinforcing

' steel. extending out of concrete that has reached a stage of Initial set, within five (5) feet of 'the concrete. Do not allow contact with forms of finished surfaces. .

7.13.6 Obtain Engineer approval before using any form attached vibrators.

. 7.13.7 Obtain Engineer approval prior to using any surface vib'rators.

7.13.8 All areas of stone pockets and mortar pondage is unacceptable.

These areas shall be removed and replaced as directed by the Engineer.

7.14 Install horizontal and vertical construction joints as shown and detailed on the approved construction drawings.

R-1 7.15 Remove wash water In manner to prevent it from running down and staining exposed faces. Should staining occur, it shall be removed.

7.16 in multiple lif t placement, allow each placement to set 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> or longer  ;

if required by Engineer be' fore placing next lif t. The interval may be l shortened by the Engineer for certain locations.

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J. A. .su E0 CO 43TnUCTIott CD:n'N1Y PACE 5 CE 8

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' CO::STRUCTIO:1 Ucra PuuCEDURE , y,ygg TITLE: KEY.1:0 3 CONCRETE PLACING, CURING, FINISHING AND REPAIRS & DATE: 3/5/76 PROJECT TITLE:

WATERFORD SES UNIT NO. 3 CONTRACT NO. W3-NY-4 8.0 CURING-

  • 8.1 Cure concrete by using water applied continuously .to all exposed concrete. i 4 8.2 Assure ample water supply for continuous fine-mist spraying or sprirtklin'g.

8.3 Obtain certification f rom Engineer for water supplied for curing. Water

. shall meet requirement in Paragraph 3.1 of this proce. dure.

8.4 If water curing cannot be used, obtain Engineer apprqval oY alternate method. Other methods are covering with mulch, curing compounds and ponding as outlined in Reference k.l.

R-l 8.5 The concrete shall be kept above 50 0 F in a moist condition for at Icast' s the*first seven (7) days after placing, except as follows: -

8.5.1 High-early concrete shall be cured for at' least the first three*(3')

days, other period .may be used if approved by Engineer.

8. 5.'2 Concrete containing pozzolon shall be for r)ot less than 14 days.'

8.5.3 For curing during " hot" and " cold' weather conditions refer to-Reference 4.1.

8.6 All equipment required for ' -Ing shall be on hand, checked out and ready for use prior to placing coricrete.

8.7 Fresh concrete shall be p m i. ted by leaving forms in place as required.

Assure against disturbing by shock, vibration and premature stressing until the concrete has attained sufficient strength to sustain the load.

8.8 Instruct each worker in the importance of not disturbing green concrete during its setting period. Worker with duties on freshly placed concrete slabs shall wear wooden " slats" approximately 8 x 18 inches.

9.0 REPAIR Unsatisfactory concrete shall be cut out and replaced with new concrete as soon

{ as practicable af ter removal of forms.

, . 9.1 Provide anchors, keys or dovetail slots by grinding and chipping to hold

. new material securely I.n place.

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i 9 Method of' repair, matching of color, curing and Engineer approval shall be performed per reference 4.1.

f:w g , m.2 R-3.' g ig .3 9 The method of repair for all defective areas in concrete af ter stripping

. v' of forms, shall be detailed step-by-step on Concrete Pour Plan, Appendix C,

. 'and accompanied with a sketch, if required, to completely cover the

......... .me thod. of. capa l c..and _cudJato. ment. t heaps.c.I.fiqa t.!90..re9.u i remen t s .

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J.. JU::EU C0;.0TRUCTION CO:LL'.t'lY PACC 6 0F 8 i . . l'nuCEDULC hv.

CD::UTRUCTION 1101'a P1:UCEDURE y.wp.7 TITI.C:

FEV. t:0 3 CONCRETE PLACING, CURING, FINISHING AND REPAIRS & DATE: 3/5/76 PROJECT TITLE:

WATERFORD SES UNIT NO. 3 CONTRACT NO. W3-NY-4 10.0 , FINISHING FORMED SURFACES 10.1 No finishing is required for formed surfaces against which backfill or concrete is to be placed, except repair of defective areas and '

filling of holes lef t by form ties and rods. **

10.2 Surfaces below grade which will receive waterproofing shall be free of '

. Irregularities which would interfere with proper application of the ~

waterproofing material. .

10.3 Surfaces which will be exposed when structure is in service will receive no special finish. Repair damaged or defective concrete, remove fins t' in height, and abrupt irregularities, fill holes left by form ties and rods.

  • 11.0 FINISHING UNFORMED SURFACES .

11.1 Surfaces exposed to the weather which the approved construc'tlon drawings" do not specify a horizontal surface or slope required shall be as follows; 11.1.1 Tops o.f narrow surfaces, such as stair treads, walls, curbs and parapets shall be sloped approximately 3/8" per foot of width.

11.1.2 Broad surfaces, such as walks, roads, parking areas and platforms shall be sloped approximately S' per foot of width.

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. .s J. . JONES CONSTRUCTION COMPANY PAGE 7 OF 8

' PROCE. CURE, MO.

CONSTRUCTION WORK ?ROCEDURE y,yp IITLE:

REV. NO 3

'DAIE: 3/5/76 CONCRETE PLACING, CURING, FINISHING AND REPAIRS PROJECT TITLE:

WATERFORD SES UNIT NO. 3 CONTRACT NO. W3-NY-4 11.2 Screed and leval all surfaces to be covered by ba'ckfill or concrete, sub-floors to be covered with concrete topping, terrazzo or quarry ti,le and similar surfaces. Surface irregularities shall not exceed h" higher or, lower from the specified surfaces. ,

11.3 Surfaces that will not be covered by backfill, concrete or tile to'pping shall be consolidated, screeded and floated. Perform floating by hand or machine. Assure surface is free from screed marks or other imperfection and that surface is uniform in texture. Tool joints and edges as shown on the approved construction drawings. -

11.4 Surfaces subjected to' moderate or high velocities or water shall be screed to correct shape required by approved construction drawings, then floated with wood floats to secure a firm, uniform texture without raising excess fine material to the surface. When surface has hardened sufficiently, it shall be brought to a uniform smoothness.by using a steel trowel. Steel

- trowel with a firm pressure to flatten the sandy texture and leave 4 dense, uniform surface free from trowel marks. .

11.5 All concrete shall be protected against damage until final acceptance by "the Engineer.

R-1 15.1 Use special care in the finishing of floor areas of offices, shops, assembi rooms and other areas where appearance is important. Special floor finishe shall be in accordance with Reference 4.1.

12.0 FORMS All forms shall be built true to slopes, lines and dimensions. They shall be properly tied and braced to maintain correct position and shape until removed.

R-1 12.1 Form design and materials shall be subject to the Engineer's review.

12.2 Form oils shall. be approved by the Engineer and appIIed per Reference 4.1.

12.3 Chamfers and fillets shall be installed per the approved construction drawing and Reference 4.1.

12.4 Forms shall remain in place for time specified in Reference 4.1.

13 0 ADVERSE WEATHER CONDITLONS., l All concrete placed in hot or cold adverse weather conditions shall b placed in l accordance with Paragraph 8 of Reference 4.1. , ,.

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J. A. JONES CONSTRUCTION COMPANY PAGE 8 0F 8 PROCECUF2 t;0.

, CONSTRUCTION WOFX PRCOEDURE IITLE: REV. NO 3 CONCRETE PLACING, CURING, FINISHING AND REPAIRS & DATE: 3/5/76 PROJECT TITLE:

WATERFORD SES UNIT NO. 3 CONTRACT NO. W3-NY-4 14.0 DOCUMENTATION s All Engineer approvals shall be obtained and become a part of the final document record package and be turned over to the Engi.neer af ter each pour is completed.

14.1 All work relating to each pour shall be completed, checked and approved prior to placement of concrete. The J. A. Jones " Concrete Pre-Placement Checklist Record", Appendix A, shall be completed fo'r each pour. The J. A. Jones " Concrete Pre-Placement Checklist Record" shall be prepared by the Area Superintendent giving the pour number, concrete mix, building location and scheduled pour date, As each item of work is completed, the Field Superintendent shall sign off by the work activity including the date, time and drawing including the revision the work was performed by.

The Jones Field Engineer shall check each work item'and sign off by the work activity including the date, time, drawing and revision used to make, the check. If errors are found, the Jones Field Engineer shall not s.ign off until they have been corrected and checked. The Jones Quality Verifi-cation Inspector shall verify that the work has been completed and checked.

He then shall sign off including the date, time drawing and revision used for the verification. All applicable blocks shall be completed. All other blocks shall be marked N/A. When all' work, checking and verification has been completed, the Area Superintendent and the Area Quality Verificatior Supervisor shall sign off and date in the space provided.

14.2 When the pour has been completed, the actual pour date shall be placed in

~ space provided and the J. A. Jones " Concrete Pre-Placement Checkt ist Record" shall become a part of the final document record package.

R-1 14.3 After the Area Superintendent and Quality Verification Supervisor has signed off the J. A. Jones " Concrete Pre-Placement Checklist Record" verify-Ing that Jones is ready to place concrete, the J. A. Jones Quality Verifica-tion Supervisor shall be authorized to sign off the Ebasco " Concrete Pre-Placement Checklist Record", Form QCIP-6-1, Appendix B, in contractor column Indicating J. A. Jones is ready to place concrete. i 14.4 After all required signatures.have been securec and the pour is approved for concrete placement, J. A. Jones shall be provided a copy of the  ;

Ebasco " Concrete Pre-Placement Chacklist Record' and it shall become a part I of the final document record package which will be turned over to the i Engineer after the placement. ,

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  • WATERFORD SES - UNIT 3 CONCRETE PRE-PLACD1ENT CHECKLIST RECORD .

Location:

Elevation: to Pour No.

Detailed

Description:

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CONTRACTOR INSPECTOR l ITEM. DATE Daen '

Sandblast /Greeneut/ Foundation Treatmand Forms (L'ine and Grade)

Blockouts, Keys, Waterstop, etc. ,

Reinforcing Steel Anchor Bolts," Embedded Steel Electrical

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Mechanical .

Final Clean-up i

Special Instructions:

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i Approved for Pincinn Time Date Q. C. Representstive ,

QCIP-6-1 APPENDIX B

75-317 .

  • J. A. JONES L ,TRUCTION COMPANY AP7EN0lX C

, M TERFCR0 SES UNIT 3 CONCRETE POUR PLAN Location Elev. To Pour No.

Pour Date Est. Cubic Yards f' .

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Plecing Equipment

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Standby VIbretors +

Standby

, w rs. Tramles 5 creeds, screed Rods Finishing Tools. Bullfloats. Trowel Mach.. etc.

Furing Equipment. Sand. Hoses. Sprinklers Wr t-Applicable IWgs Rev. Applicable Dwgs Rev.

Field Engineer Aree Supt.

Quellty Assurance 8

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