ML20127C245

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Rev 0 to Const Work Procedure W-WP-7, Concrete Placing, Curing,Finishing & Repairs
ML20127C245
Person / Time
Site: Waterford Entergy icon.png
Issue date: 11/21/1975
From:
J.A. JONES CONSTRUCTION CO.
To:
Shared Package
ML17198A241 List: ... further results
References
FOIA-84-455 W-WP-7, NUDOCS 8506220177
Download: ML20127C245 (11)
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, Procedure No. W-WP-7

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. ^- f-J. A. JONES CONSTRUCTION COMPANY

, 'CONSTRUCTidN WORK PROCEDURE FOR -

CONCRETE Pl. ACING, CURING, FINISHING AND REPAIRS e

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

ENGINEERING .

QUALITY ASSURANCE CONSTRUCTION . -

REV. DATE APPROVED BY DATE w sAPPROVED BY DATE APPROVED BY DATE 0 ll*VJ'75 W -h 1//zWas~ Ut Uff I'

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J. A. JONES CONSTRUCTION COMPANY PACE 1 op 8 PROCf.DUPd .No.

CONSTRUCTION UORK PROCEDUPI W-WP-7 TITLE: PSV. UO O

& DATI* 11/21/75 CONCRETE Pl. ACING, CURING, FINISHING AND REPAIRS PROJECT TITLE:

WATERFORD SES UNIT NO. 3 CONTRACT NO. W3-NY-4 1.0 PURPOSE To outline methods used by J. A. Jones and Subcontractors to place, cure, finish and repair concrete.

2.0 SCOPE This ..irocedure includes the requirements to be used by J. A. Jones and their Subcc. tractors to comply with approved construction drawings and specifications.

3.0 DEFIN ITIONS .

3.1 Water The water used for all aspects of this procedure shall be furnished and

- certified acceptable by the engineer. It shall be free from any injurious amounts of acid, alkali, salts, sediment or organic matter and shall not contain more than,1000 ppm of dissolved solids and not more than 100 ppm chloride ion.

3.2 Hot Weather Hot weather is when the dry bulb temperature is above 85 F and is expected to go higher.

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3.3 Cold Weather Cold weather is when the dry bulb temperature is at or below 40 F and an be expected to fall lower.

4.0 REFERENCES

LM W 41 Ebasco Services, Inc. Specification LOU-1564-472, latest revision,' ~

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4.2 J.' A. Jones Procedure, W-SITP-7, " Concrete Placing, Curing, Finishing and Repair inspection".,

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6 J. A. JONES CONSTRUCTION COMPANY PACE 2 oy 8 PROCELJRZ 1;O.

CONSTRUCTION UORK PROCEDURE W- P-7 TITLE: REV. no 0.

CONCRETE PLACING, CURING, FINISHIN,G AND REPAIRS & DATE:11/21/75

?ROJECT TITLE:

WATERFORD SES UNIT NO. 3 CONTRACT NO. W3-NY-4 5.0 RESPONSIBILITIES 5.1 Ebasco Services, Inc. Is responsible for furnishing all materials, re-ceiving inspection, testing and documentation of such test as required by Reference 4.1 to support J. A. Jones and their Subcontractor in per-forming their work.. ,

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 specifiestions.

6.0- TRANSPORTAT ION 6.1 Convey all concrete from mixer to place of final deposit '- : ;: ....

l IA/ _,,....) bucket, container or conveyors to assure required consistency '

I . and plasticity without segregation or loss of slump.

l 6.2 Check time and number of drum rotations after water has been added to the cement 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 (li) hours.

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6.3 Do not add water to exceed total allowed quantity. Do not place concrete that has become stiffened to the extent that water must be added to allow placing.  :

i j 6.4 clean all tools and equipment used in placing e m4 afterconcr each period &f of placement.

7.0 PLACING '

, Ell 3 U 7.1 Obtain Engineer @;;r:r! of equipment, layout, procedures and methods prior to placing concrete, i 7.2 Discharge concrete from mixer into center of bucket or hopper. This principle of vertical discharge shall be used during all stages of del ive ry.

7.3 Depo' sit concrete as near as practicable to its final lo cat ion. When

! . direct placement is not possible, use suitable chutes and " elephant trunks" to confine concretg movemen,t. Do not allow concrete to flow in a manner that will cause segregation.

I 7.4- Use a central-bottom-dump bucket that provides positive regulation of

' . amount and rate of deposit in all dumping positions.

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J. A. J0!ES CONSTRUCTION COMPANY PAGE 3 0F 8 PROCEOURI t;o.

CONSTRUCTION UORK PROCEDURE -

W-WP-7 TITLE: REV.1:0 0

& DATE:11/21/75 CONCRETE PLACING, CURING, FINISHING AND REPAIRS PROJECT TITLE:

WATERFORD SES UNIT NO. 3 CONTRACT NO. V3-NY-4 7.5 When placing concrete with bucket, spot bucket over exact location, then

lower to Just clear the concrete already in place, with bucket open. The unconfined height must not d' e 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, buggies, cars or hand shoveling. Take care not to allow vertical drop of over five (5) feet.

7.7 Obtain Engineer ROVIDE :n! of all required chutes as to type, length, slopes, baffles and vertical terminals. Slope on chutes shall not be flatter than 1 to 3 and not steeper than 1 to 2.

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77- -i en n . ,=n - --*- Aluminum or galvanized steel pipe will not be used to convey concrete. -

7.9 Obtain Engineer inspection cd w... ' of cleanliness prior to placing concrete.

7.10 Remove all surface water from forms, embeds, resteel, and adjoining con-crete. No concrete will be placed on a water covered surface.

7.11 Place concrete in successive 6 to 20 Inch thick horizor.tal layers. Cor-rect tendency to segregate by shoveling stones into mortar.

l 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 direction.

7.13 Compact concrete with mechanical vibrat;ing equipment until the concrete has been consolidated to the maximum density, free of pockets' or coarse aggregate, and fits tight against forms and embed material.

7.13.1 Use vibrators of the high-frequency type with not less than 6000 y revolutions per minute, to. properly cond idate the concrete.

o 7 13.2 Insert vibrators approximately every 2 feet in the vert _ica) post-g

g. Remove vibrator slowly to avoid creating pockats. Da not use vibrators to transport the concrete.

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i J. A. JONES CONSTRUCTIOW COMPANY PAGE 4 0F 8

' l'A00EDi.;P4 ;;O.

I CONSTRUCTION WORK PROCF. DURE ,p TITLE: P2V. NO O CONCRETE PLACING, CURING, FINISHING AND REPAIRS '

PROJECT TITLE:

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

7.13.3 Use vibrators to blend and meld wew la'yer with previously placed layer. Care must be taken to assure adequate vibration.

7.13.4 Insure vibrator penetrates the layer being placed and also the

. 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 rein- ' ,

forcing steel. Do not allow vibrator to contact reinforcing i

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 forr'n attached vibrators.

7.13.7 Obtain Engineer approval' prior to using any surface vibrators.

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~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.

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7.14 install horizontal and vertical construction joints as shown and detailed on the approved construction drawirgs.

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7.15 Remover wash water in a manner to prevent Itgrunning down and staining exposed faces. Should staining occur, it shall be removed. - .

7.16 In multiple life plet.ement, allow each plac.ement 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 before placing next lift. The Interval may be shortened by the Engineer for certain locations.

8.0 CURING 8.1 Cure concrete, by using water applied continuously to all exposed concrete.

i 8.2 Assure ample water supply for continuous fine-mist spraying or sprinkling.

'8. 3 Obtain certification from Engineer for water suppiled for curing. Wtar shall meet requirement in Paragraph 31 of this procedure. .

i f 8.4 if water curing cannot be used, obtain Engineer approval of alternate l method. Other methods are covering with mulch, curing compounds and ponding as outlined in Reference 4.1.

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J. A. J0KES CONSTRUCTION C0hfPANY PAcz 5 0; 8 I I

't PROCEDU?2 ;;0.

bONSTRUCTION UOPX PROCEDURE W-WP-7 TITLE: PSV. NO O

& DATE: 11/21/75 CONCRETE Pt. ACING, CURING, FINISHING AND REPAIRS

?ROJECT TITLE:

WATERFORD SES UNIT NO. 3 CONTRACT NO. W3-NY-4 460VS pp 8.5 The concrete shall be kept y 50 Fgin a moist condition as follows:

8.5.1 Common concrete shall be cured for seven (7) days after placing.

8.5.2 High-early concrete shall be cured for at least the first three (3) days, other period may 'be used if approved by Engineer.

8.5.3 Concrete containing pozzolon shall be for'not less than 14 days.

8.5.4 For curing during " hot" and " cold" weather conditions refer to Reference 4.1. .*

,8.6 All equipment required for curing shall be on hand, checked out and ready .

for use prior to placing concrete; l, l 8.7 Fresh concrete shall be protected 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.

4 8.8 Instruct each worker in the importance of not disturbing green concrete i

during its setting period. Worker with duties on freshly placed con-crete slabs shall wear wooden " slats" approxi.sately 8 x 18 Inches.

i 9.0 REPAIR

! Unsatisfactory concrete shall be cut out and replaced with new concrete as I soon as practicable after removal of forms.

9.1 Provide anchors, keys or dovetail slots by grinding and chipping to hold new material securely in place.

l 92 Method of repair, matching of color, curing and Engineer approval shall I be performed per Reference 4.1.

10.0 FINISHING FORMED SURFACES -

f 10.1 No finishing is required for formed surfaces against which backfill-or t concrete is to be placed, except repair of defective areas and filling of holes left' by form ties and rods. -

! 10.2 Surfaces below grade which will receive waterproofing shall be free of l Irregularities which would interfere with proper application of the

! waterproofing material. -

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J. A. JONES CONSTPECTION COMPANY PAGE 6 0F 8 PROCIOURE EO.

CONSTRUCTION L'ORK PROCEDURE , p, REV. NO O l'

TITLE: & DAIE-11/21/75 CONCRETE PLACING, CURING, FINISHIN,G AND REPAIRS l PROJECT TITLE:

WATERFORD SES UNIT NO. 3 CONTRACT NO. W3-NY-4 10.3 Surfaces which will be exposed when structure is in service will receive' ro special finish. Repair damaged or defective concrete, remove fins h' 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 construction drawings do not specify a horizontal surface or slope required shall be as follows:

11.1.1 Tops of narrow surfacesi such as stair treads, walls, curbs and parapets shall be sloped approximately 3/8" per foot of width.

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11.1.2 Broa'd surfaces, such as walks, roads, parking areas and platforms shall be sloped approximately h' per foct of width.

11.2 Screed and level all surfaces to be covered by backfill or concrete,

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subfloors to be cov'ered with concrete topping, terrazzo or quarry tile l 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 topping shall be consolidated, screeded and floated. Perform floating by hand or machine. Assure surface is free from screed marks or other Imper-fections 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 fi rm, 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 a dense, uniform surface free from trowel marks.

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

11.6 Use special care in the finishing of floor areas of offices, shops, and pea ra e is important. fM assembly-A. roomg% be areas y g rep.L ^^p % /

l 12.0 FORMS

@ 7 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.

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.s J. A. JONES CONSTRUCTION COMPANY PAGE 7 CF 8 PROCEOUPS i;0.

CONSTRUCTION VORK PROCEDURE ,

TITLE: REV NO O

& DAT= 11/21/75

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CONCRETE PLACING, CURING, FINISHING AND REPAIRS TROJECT TITLE:

WATERFORD SES UNIT NO. 3 CONTRACT NO. W3-NY-4 RfWFW 12.1 Form design and materials shall be subject to th~e Engineer's appeevel.

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

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

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

13.0 ADVERSE WEATHER CONDITIONS Al.1concreteplacedinhdtorcoldadferseweatherconditionsshallbeplaced in accordance with Paragraph 8 of Reference 4.1.

14.0 DOCUMENTdTION All Engineer approvals sFall be obtained and become a part of the final document record package and be turned over to the Engineer after 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 for 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 j work activity including the date, time, drawing and revision used to make i the check, if errors are found, the Jones Field Engineer shall not sign off until they have been corrected and checked. The Jones quality '

Verification 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 com-i pleted. All other blocks shall be marked N/A. When all work, checking and verification has been completed, the Area Superintendent and the Area

! Quality Verification 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 Checklist i Record' shall become a part of the final document record package.

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  • J. A. JONES CONSTRUCTION COMPANY PAGE 8 0F 8 PROCEOUF2 KO.

CONSTRUCTION I!ORK PROCEDURE w-wp-7 ,

TITLE: P2v. no o b

  • CONCRETE Pl. ACING, CURING, FINISHING AND REPAIRS PRO.iECT TITLE: '

WATERFORD SES UNIT _NO. 3 CONTRACT NO. W3-NY-4 14.3 After the Area Superintendent and quality Verification Supervisor has signed off the J. A. Jones " Concrete Pre-Placement Checklist Record" verifying that Jones is ready to place concrete, the J. A. Jones quality Verification Supervisor shall be authorized to sign off the Ebasco

" Concrete Pre-Placement Checklist Record", Form QCIP-6-1, Appendix S, .

p k b I" W ndicating J. A. Jones is ready to ' place concrete.  !

h i 14.4 After all required signatures have been secured and the pour is approved for concrete placement, J. A. Jones shall be provided a copy of the Ebasco " Concrete Pre-Placement Checklist Record" and it shall become a part of the final document record package which will be turned over to the Engineer af ter the placemenI.

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9 WATERFORD SES - UNIT 3 1

CONCRETE PRE-PLiCEME;T CHECKLIST RECOTW

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Location: _

. j Elevation: to Pour No.

Detailed

Description:

ITDg CONTRACTOR INS?ECTOR l DATE __

Date Sandblast /Greeneut / Foundation Treat:nent, .

Forms (Iine and Grade) *

- Blockouts, Keys, Waterstop, etc. ,

Reinforcing Steel Anchor Bolts, Embedded Steel Electrical .

Mechanical Final Clean-up i

Special Instructions:

Approved for Placing Time Date Q. C. Representative QCIP-6-1

. APPENDIX B

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