ML20127B715

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Rev 1 to Special Process Procedure W-SP-6, Bending & Straightening of Reinforcing Bars Partially Embedded in Concrete & Placing of Bars in Hardened Concrete
ML20127B715
Person / Time
Site: Waterford Entergy icon.png
Issue date: 05/13/1976
From:
J.A. JONES CONSTRUCTION CO.
To:
Shared Package
ML17198A241 List: ... further results
References
FOIA-84-455 W-SP-6, NUDOCS 8506220036
Download: ML20127B715 (4)
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Text

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- * . Proccdure No. W-SP-6 c.-

J..A. JONES CONSiRUCTION COMPANY SPECIAL PROGESS  ! PRO.CEDURE , .

FOR - -

SENDING AND STRAlCIITENING OF REINFORCING

' BARS PARTIALLY EMBEDDED IN C0f! CRETE AND '

. PLACING OF BARS IN HARDENED-CONCRETE

WATERFORD SES UNIT NO.3

, CONTRACT NO. W3-NY-4 .

ENGlHEERING QUALITY ASSURANCE CONSTRUCTION REV. DATE APPRO.VED BY DATE APPROVED BY DATE ' APPROVED BY DATE

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eg62)gj36850222 A PDR FREEDOel 0F INFORMATION l gARDEB4- 55 , ACT REQUEST

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J. a. JONES CONSTRUCTION COMPANY SPECIAL PROCESS PROCEDURE PACE 1 0F 3

^ I TITI.E *. PROCEDURE NO.

V-S P-6 j

EMBEDDED IN CONCRETE PROJECT TITLE:  ;

RS PARTIALLY IN HARDENEO CONCRETQ AND PLACI

g. DATEREV. N0. I

- WATERFORD SES UNIT NO. 3 5/13/76 CONT MCT NO. W3-NY-4 .

1.0 _ PURPOSE To specify methods to be used by J andbeen has its'placed.

subcontractors to straighten. A. Jones Constructio 2.0 C

,$,,C,0,Pj, reinforcing steel '

.3 after concrete i .

steel after concrete has been placedThis proce

'3. 0 REFERENCES

. e used to straighten reinforcing i

3.1 ACI 318-71 ,

3.2 I t .1 ACI 318 Commentary. .

3.3 4.0 1975 Supplement to ACI-318-71 and its Co DEFINITIONS mmenta ry. ~

' None.

. 5.0 ,

RESPONSIBILITY

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J. A. Jones is to assure proper preparati-bending .

1 6.0 of concr,ete surfaces againstng. damage

, and proper protection by heatiprop BENDING AND STRAIGHTENING 6.1 G 00WELS OF REINFORCIN may be brought to their plumb positionReinfo ,

6.2 accordance with ACI-318-71 a and t is bars performed that have"been and in the requ rements below.

The minimum distance from the center of th concrete 6.3 greater. surface shall be 6 inches or 5 bar diameters whi h c ever is and maintained at that level until bendiThe re i

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! r t to between 1100F and 1200F ng is c.omplete.

each way from the center p equalof to 5 the bar diameters The bend exce l

extend below the surface of theThe that concrete preheat shall not liar at hars shallthe notconcrete be artificially Interface cooled exceed(5000 shall not temperature of the F. The heated alr) until after cooling to at least0 600 Fsuch as by water or force

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J. n. JONES CONSTRUCTION COMPANY 7 PAGE 2 0F 3 i

1 SPECIAL PNCIS5 PROCEDURE 1 W-SP-6 1 TITLE. BEHDING AND STRAIGHTElllNG OF REINFORCING BARS PARTIALLY REV. NO. I EMBEDDED lil C0f CRETE AND PLACING OF BARS IN HARDEllED C0t! CRETE & DATE - 5/13/7o, i

PROJECT TITLE: I j WATERFORD SES UNIT NO 3 CONTRACT NO. W3-NY-4 ,

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6.4 Temperature - Heasuring cra'ons y shall be used to determine 1 . the temperature. Heat shall be applied in such a way as to avoid damage to the concrete. Care shall be taken to prevent' quenching of heated bar either by application of water or by

,, ,_ , exposure to sudden down pour of.# '

rain. '

  • l t- 1 7.0- MINIMUM SEND DIAMETER ,

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7.1 In the case of bending of reinforcing bars, the following minimum )

diamters of bend shall apply:

Bar Sizes 3-8 - 6 bar diameter -

Bar Sizes 9-11 - 8 bar diameter Bar Sizes 14 & 18 e 10 bar diameter -

l I 8.0 ACCEPTABILITY OF BARS ,

! 8.1 Straightened bars shall be visually inspected to determine

! whether they are cracked reduced in cross section, or otherwise '

l damaged.

  • l Any damaged portions wi1I be cause for rejection and ,

new bar will be grouted in place. .

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t. ) 3.0 PLACING 00WELS IN HARDENED CONCRETE

! '] ' 3.1 Dowels that are to be placed in hardened concrete shall be  ;

i drilled and epoxy grouted in place in accordance with , .

the following conditions. '

j2 Holes for various size dowels will be drilled as close as possible 1

to design location and in accordance with the charts below:

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CHART "A" * -

Hole Size .

i aar tire 4 5 6 7 8 9 10 11 14 18 i Minimum Hole Size 1" 1 1/8" It' I 3/8" l{a 1 5/8" 1 3/4" l 7/8" 2t' 2 3/4"

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1 EART "9" *

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Embedment Lenoth (Inches) ,

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nar sire 4 5 6 7 I8 9 10 11 14 18 l

4000 PSI concrete 6 6 8 11 15 19 24 29 40 54 1 S.3 Bars will be requisitioned and/or fabricated according to the

! reinforcing steel design drawings.  ;

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, J. i. J0NES CONSTRUCTION COMPANY I PAGE 3 0F 3 1 i

SPECIAL PROCESS PROCEDURE P0 0 RE NO.

TITLE: BENDING AN8 STRAIGHTENING OF REINFORCING BARS' PARTIALLY REV.~NO. I EMBEDDED IN CONCRETE AND PLAClHG OF 1%RS IN HARDENED CONCRE1 Et,DATE 5/13/76 PROJECT TITLE: WATERFORD SES UNI NO. 3 CONTRACT NO. V3-NY-4 AI 9.4 The hole will be filled half full with the grouting agent prior to inserting dowel. The dowel will be inserted in hole, being careful to insure that the dowel is completely bottomed out. If

. necessary, add more epoxy agent to completely fill hole.

S.5

~ ser will be adequately braced during set time of epoxy agent in

, order to insure dowel is plumb.

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