Final Submittal TFI-Predator Beddown FTU/LRE Site 163D Reconnaissance Wing March ARB, CA.

middleweightscourgeΠολεοδομικά Έργα

29 Νοε 2013 (πριν από 3 χρόνια και 7 μήνες)

61 εμφανίσεις



Final Submittal



TFI
-
Predator Beddown FTU/LRE Site



163D Reconnaissance Wing



March ARB, CA.



MIDDLEWEIGHTSCOURGE_
C0218855
-
895C
-
45EF
-
A086
-
3556BE04B5C4.DOC

032000
-
1

09/21/2009

SECTION 032000
-

CONCRETE REINFORCEMENT


PART 1
-


GE
NERAL

1.01

SUMMARY
:

A.

This Section includes steel reinforcement bars, ties, welded wire fabric, bolsters, chair
supports, and accessories.



B.

Related Work Specified Elsewhere:


1.

Concrete Formwork:

SECTION 031000.



2.

Concrete:

SECTION 033000.



1.02

REFERENCES
:

A.

Applica
ble Standards:


1.

American Society for Testing and Materials (ASTM):


a.

A82
-

Steel Wire, Plain, for Concrete Reinforcement.



b.

A185
-

Steel Welded Wire
Reinforcement
, Plain, for Concrete.



c.

A615/A615M
-

Deformed and Plain
Carbon
-
Steel Bars for Concrete
Reinf
orcement.



d.

A706/A706M
-

Low
-
Alloy Steel Deformed and Plain Bars for Concrete
Reinforcement.

2.

American Concrete Institute (ACI):


a.

301
-

Specifications for Structural Concrete.

b.

SP
-
66
-

Detailing Manual.



c.

318
-

Building Code Requirements for Structural Conc
rete.



d.

117
-

Specifications for Tolerances for Concrete Construction and Materials.

3.

American Welding Society (AWS):


a.

A5.5
-

Low Alloy Steel
Electrodes for Shielded Metal Arc Welding.

b.

B2.1
-

Welding Procedure and Performance Qualification.



c.

D1.4
-

Struct
ural Welding Code
-

Reinforcing Steel.



4.

Concrete Reinforcing Steel Institute (CRSI):


a.

Manual of Standard Practice.



1.03

SUBMITTALS
:

A.

Submit as specified in DIVISION 1.



B.

Include, but not limited to, the following:


1.

Complete bar schedule, bar details, and er
ection drawings to conform to ACI SP
-
66.



2.

Drawing with each type of bent bar marked with identification mark.


Straight bars shall
have mark number or be identified by size and length.



3.

Erection drawings shall be clear, easily legible, and to a minimum s
cale of:


a.

1/4

inch = 1 foot (1:50).



b.

1/8

inch = 1 foot (1:100) if bars in each face are shown in separate views.



4.

Size and location of all openings.



5.

Concrete protective cover.



6.

Grade of steel.



7.

Lap splice lengths.



Final Submit
tal



TFI
-
Predator Beddown FTU/LRE Site



163D Reconnaissance Wing



March ARB, CA.


SECTION 032000
-

CONCRETE REINFORCEMENT
: continued



MIDDLEWEIGHTSCOURGE_
C0218855
-
895C
-
45EF
-
A086
-
3556BE04B5C4.DOC

032000
-
2

09/21/2009

1.04

DELIVERY, STORAGE, A
ND HANDLING
:

A.

St
ore steel reinforcement blocked
-
up off the ground and in orderly stacks.



B.

Store only bars with the same identifying label in the same stack.



1.05

TESTING
:

A.

Perform at the mill for each heat.



B.

Submit certified test results upon request.



PART 2
-


PRODUCTS

2.01

REINFORCEME
NT BARS, TIES, AND S
TIRRUPS
:

A.

Materials:


1.

Conform to ASTM A615, Grade 60, except as otherwise specified.



2.

Reinforcement indicated or specified to be welded shall conform to ASTM A706.

B.

Fabrication of Bars:


1.

Fabricate with cold bends conforming to the reco
mmended dimensions shown in ACI
318.



2.

Fabricate bars according to the tolerances given in ACI 117.

3.

Field fabrication will be allowed only if Contractor has equipment to properly fabricate
steel.



4.

Attach metal or plastic tags with identifying mark or leng
th corresponding to mark
number or length on Drawing.


Straight bars shall have mark number or size and length.


Bent bars shall have mark number.



5.

Contractor may, at his option, continue steel reinforcement through openings in walls and
slabs, then field
-
cut the opening so that there will be the required concrete cover between
ends of bars and edge of opening.



2.02

WELDED WIRE
REINFORCEMENT
:

A.

Conform to ASTM A185 using bright basic wire conforming to ASTM A82.



B.

Wire sizes W1.4 and smaller shall be galvanized
.



C.

Provide mats only. Rolled fabric is not acceptable.

2.03

BOLSTERS, CHAIRS, AN
D ACCESSORIES
:

A.

Conform to ACI SP
-
66 and the CRSI Manual of Standard Practice.



B.

Provide all spacers, bolsters, chairs, ties, and other devices necessary to properly space, place,
support, and fasten steel reinforcement in place during the concrete placement.



C.

Metal accessories shall be galvanized or plastic
-
coated where legs will be exposed in finished
concrete surfaces.



D.

Do not use rocks, broken bricks, wood blocks, or concrete
fragments for support of steel
reinforcement.



2.04

PRECAST CONCRETE BLO
CK BAR SUPPORTS
:

A.

May be used only for bar supports in slabs on ground.



B.

Conform to ACI SP
-
66 and the CRSI Manual of Standard Practice.





Final Submit
tal



TFI
-
Predator Beddown FTU/LRE Site



163D Reconnaissance Wing



March ARB, CA.


SECTION 032000
-

CONCRETE REINFORCEMENT
: continued



MIDDLEWEIGHTSCOURGE_
C0218855
-
895C
-
45EF
-
A086
-
3556BE04B5C4.DOC

032000
-
3

09/21/2009

C.

Each block shall have a minimum of 9 square inches

(5800 square millimeters) of bearing
area.


Space as required by the particular condition of weight, bearing surface, and rigidity of
the steel reinforcement.



PART 3
-


EXECUTION

3.01

PLACEMENT OF STEEL R
EINFORCEMENT
:

A.

Place all steel reinforcement before concrete is c
ast in accordance with approved erection
drawings, ACI 117, Chapters 7 and 12 of ACI

318, and the CRSI Manual of Standard
Practice.



B.

Remove oil, mill scale, pitting, mud, loose rust, ice, and other materials that would reduce
bond from bars before placing
.

C.

Tie securely with 1.6 mm (16
-
gage) or larger annealed iron wire.



D.

Place to maintain concrete cover to conform to ACI 117 and Chapter 7 of ACI 318, unless
otherwise indicated.



E.

Splice steel where indicated. Splices shall be in full contact and shall co
nform to Chapter 12 of
ACI 318.

1.

Unless otherwise indicated, lap splices shall be Class B as defined by ACI 318.


2.


Splice steel using Cadweld Series C
-

or T
-
splices where indicated or approved.



a.

Provide a manufacturer's representative to give on
-
site inst
ructions to all welders
who will perform the splices in the field.



b.

Contractor shall have the manufacturer's representative instruct, observe, and
approve in writing those persons doing the welding.



c.

Contractor shall arrange for the manufacturer's repres
entative to return at the request
of the
Contracting Officer (CO)
.



3.

Lenton Mechanical Splices:


a.

Lenton mechanical splices shall be used where indicated or may be used in lieu of
Cadweld splices.



b.

The Lenton mechanical spl
ices shall develop in tension and compression at least
125% of the yield strength (Fy) of the bar spliced.



4.

Splices in members

indicated as "tension tie members" shall be made with Cadweld
Series C
-

or T
-
splices or Lenton mechanical splices in accordance with ACI 318, Article
12.15.5.



5.

Any additional Contractor
-
proposed splice shall be submitted for acceptance of location
and sp
lice length.



F.

Lap welded wire
reinforcement

in accordance with Section 12.19 of ACI 318, but not less than
the length of one mesh plus 2 inches (50 mm).



G.

Connection of reinforcement bars to steel shapes or plate shall be with a Cadweld Series B
-
splice.



H.

Do not bend bars embedded in hardened or partially hardened concrete without approval from
Contracting Officer (CO)
. If bending is permitted, conform to procedures of ACI 301 unless
otherwise prescribed by the governing building code.



Final Submit
tal



TFI
-
Predator Beddown FTU/LRE Site



163D Reconnaissance Wing



March ARB, CA.


SECTION 032000
-

CONCRETE REINFORCEMENT
: continued



MIDDLEWEIGHTSCOURGE_
C0218855
-
895C
-
45EF
-
A086
-
3556BE04B5C4.DOC

032000
-
4

09/21/2009

I.

Do not weld reinfor
cing bars unless specifically indicated. Where welding is indicated,
provide bars conforming to ASTM A706/A706M and comply with AWS D1.4.


END OF SECTION 032000