Astm c 1396 c 1396m 04 standard specification for gypsum board

gypsum backing board, exterior 4.1.4 ,fiedecoraced gypsum board shall consist o f a noncom- gypsum soffit board and gypsum ceiling board shall have a bustible core, essentially gypsum, s

.Standard ~ ~ e c i f i c a t i u n for '

Gypsum Board1

specification covers the ,wsum boards described located in Section 1-4 and 13-15 Specifications applicable to

in 1.1.1-1.1.9 specific gypsum boards are located in the following sections:

N m 1-Specifications C 810, C 841 C 860 and C 1280 contain a p

plicarion proccdurcs for gypsum board

1.1.1 Gypswn wallboard, designed for use on walls, ceil-

Exterior gypsum soffit board

Gypsum sheaming board

1.1.3 Gypsum backing board, coreboard* and shaftliner 1.3 The vaues stated in either inch-pound units or SI

board, designed for use.as.a base in m u l d a ~ e r s ~ s t e m s or as a (memc) are tobe regarded separarely as's&dard Within the

gypsum stud or core 'in semisolid or solid gypsum board text the SI units are shown in brackets The -values stated in

partitions, or in shafi waIl assemblies

2.1 ASTM Srmdards:

1.1.6 Gypsum sheathing board, designed for use as sheath- sum Board

ing on buildings C 841 Specification for Installation of Interior Lathing and '

1.1.7 Gypsum base for veneer plaster, designed for use as a Furring

base for the application of gypsum veneer plaster C 844 Specification for Application of Gypsum Base to 1.1.8 Gypsum loth, designed for use as a base for the

application of gypsum plasrer

ceilings wich framing spaced not more than 24 in [610 mm] on

center and chat affords a surface suitable to receive water-based C 1280 Specification for Application of Gypsum Sheathing texture and other decoration This product is also suitable for E 84 Test Method for Surface Burning Characteristics of

E 96 Test Methods for Water Vapor Transmission of Mate- , 'This spenfiwtion is under the jurisdiction of ASTM Cornmicue CI1 on

Gypsum and Related Building kkriab and Systems and is h e direct respansibiliry

of Subcommit~e ClI.01 on Spcification~ and Test Mehods for Gypaum Producu ' For rcIemnced ASTM ttandmds visit the ASTM web~irc, www.arrn.org, a

Currcm dition approved May 1 2004 Published June 2 W Originally contact ASTM Customer Service at rervice@artm.org For Annvoi Em& o f ~ J T M ::

approved in 1998 Last previous edition approved in 2003 as C 13961 S~ondords volume informalion nfer m h e smndard's Dwumtnl Summnry pageon

.,

'A Summary of Changes section appenrs nt the end of this stendard

I E L L9 Test Methods for Fire Tcsts ot' Bullding Constructron when applied at right angles to and on each slde ot'loadbemng , and blaterials

J 2 X 4 wood studs spaced 16 in [J06 rnm] on centers wtrh blui

e r m i n o , o g y .lilbc;f hlrc' lath nails spaced 5 in [127 mrn] on centers h e r which is

applied I/? in [ I T 7 rnmj L:2 gypsum sand plaster m d rested in

3.1 Definitions used in this specificat~on shall be in accor- accordance with the requirements of Test Method E 119 dance with ~ e r r n i n o l b e ~ " C I I:

3.2 Definirions of Terms Speclfic ro This Srandard: deca~ls NOTE 3 Consult producers for independent test data on assembly

2nd fire-resistance ratings for other types of constmcrion Sre fire

with or without aggregate usemblv ourlculars materials u J racings

3.2.2 decorarive sheer or ,film, n-a plastic film, either

backed or unbacked: plastic sheet; or combination of these 4.3.3 Gypsum shaftliner board type X designates gypsum

3.2.3 edge, n-the bound edge as manufactured shaftliner board complying with this specification that meets

3.2.4 gypsum backing board, yi 5/*-in ~ 6 4 to 15.9- the acceptance criteria for temperature rise for nor less than

m m ~ board used as a backng for gypsum wallboard, I-'/' h for boards %-in l19.0 mml thick or 2 h for boards l-in acoustical tile or other dry cladding C25.4 mml thick when applied in a double layer solid nonload

3.2.5 g:Jpsum coreboard, yd to ,-in, ~ 1 9 0 to 25.4 1 b e ~ n g parution as described in 4.3.3.1 and tested in accor- gypsum board used as a ,oypsum srud or core in or dance with Test Methods E 119 with thermocouple locations as solid gypsum board partitions specified in 4.3.3.2

4.3.3.1 Two layers of gypsum shaftliner board applied

Rlateriab and M?nufacture ~ { i ~ t 8 L- /@ ' b ~ vertically and friction fir into venical 25-gage steel "H" 4.1 Gypsum board shall consist of a noncombustible core, members, 1-fi-h L38.1 mml deep for boards '/4-in C19.0 essentially gypsum surfaced with paper bonded to the core thick or? in c50.8 mml deep for boards 1-in [z.! mml h c k , 4.1.1 Gypsum sheathing board shall consist of a noncom- spaced %-in 1610 mm] on centeis and 25-gage steel trick ac bustible water-resistant core, essenually gypsum, surfaced on the perimeter of the partiaon "H" members shall be formed both the face andback with water-repellant paper bonded to the with a single web or shall be two pieces of pm-hIeter uack

4.1.2 Gypsum coreboard shall be either a single board or mml on centers

composed of two factory-laminated gypsum boards to provide 4.3.3.2, Temperature rise on the unexposed surface shall be

up to t in 125.4 mm] total nominal thickness measured using not less than five thermocouples: one shall be

4.1.3 Water-resistant gypsum backing board shall.consisc of located at the center of the assembly and one shall be located

a noncombusdble water-resistant core, essentially gypsum, at the center o f each quadrant Thermocouples shall be located

surfaced on both the back and face with water-repellant paper not less than 3-in (76 mrn] from an " H member

bonded to the core 3.4 Gypsum wallboard gypsum backing board, exterior 4.1.4 ,fiedecoraced gypsum board shall consist o f a noncom- gypsum soffit board and gypsum ceiling board shall have a bustible core, essentially gypsum, surfaced with piper bonded flame spread index nf not more than 7-5 when tested in

to the core with the face covered with a decorative sheet, film, acc rdance with Test Method E 84

or coating 4.1.4.1 Class I predecorated gypsum board shall have a Gypsum Board: 6 4.5 Physical Propern'es, , Dirnekions, and Tolerances of

decorative sheet or film laminated to the face 4.5.1 Specimens stiall be taken from the samples obtained in 4.1:4.2 Class I1 predecorated gypsum board' shall have a accordance with Specificauon c 1254,

decorative coating applied to the face 4.5' 1.1 Specimens shall be rested in accordance with Test

4.2 The back surface of foil-backed gypsum board shall in ~ ~ ~ h ~ d ~

addition be covered with aluminum foil % 4.5.?=ndd 7/~:.1l's and EEdge ?i&ness The rcl ' specimens shall

4.3 Gypsum Board, v p e X (Special Fie-Resistant): have an average hardness of not less than 15 lbf [67 NJ when 4.3.1 type X, designates gypsum tested by Method A and 11 lbf [49 N] when tested by Method except gypsum lath, gypsum coreboard, and gypsum shaftliner B

board, complying with this specification that provides not less 4.5.3 Edges and Ends-The edges and ends shali 'be than I h fire-resistance rating for boards 5/a in ('15.9 mmJ thrck straight,

or % h fire-resistancc rating for boards '/1 in C12.7 mrnJ thick,

4.5.4 Length-The tolerance in length shallbe 2 1/4 in ( 2 6 applied parallel with and on each side of load b e a r i n 2 by 4

wood studs spaced 16 in [406 mm] on centers with 6d coated mml

nails, 1% in:'[48 mm] long; 0.0915-in [2.3-rnm] diameter 4.5.5 Tapered ~ d ~ e ' Deprh-The average thickness 'of the; shank, '/a-in [6.4-mm] diameter heads, spaced 7 i n [178 mmJ edge of recessed or tapered edge gypsum board shall be not

on centers with gypsum board joints staggered 16'in: [406 mm] less than 0.020 in [0.5 1 mm]-but not more than 0.090 in [?.%

on each side of the oartition and tested in accordance withTesc mm] less than the average thickness of the gypsum board

ing with this specification that provides not less than a l-h 5.1 Physical Properries of Gypsum %llboard and ~ r e & ? -

fire-resistance rating for gypsum lath % in [9.5 mm] thick, rated Gypsum Board: /&: h ' ( ~ &.,/,>c ? [ -$dL4 ?', :./Id -

r @ C 13961C 13961 - 04

specimens shall be tested face 6 Gypsum Backing Board, Gypsum Coreboard,' and

up and face down The average brea!ung load shall be not less O Gypsum Shaftliner Board

to Pand Pmllel to Panel to Length, Parallel 10 Panel

6.1.1 Flexural Srrengrh-The speclmens shdl be tested face

in [mml

Ibf [N] Le"Oth' IM IN' Ibf [NI Leng(h ~ b f [NI up and face down The average brealung load shall be,not less

than the follow~ng:

6 50 (2221 20 I891 46 [205] 16 [71]

%A 91 65 [280] 25 1111) 62 1278) 21 [93]

% (15.91 150 [667I 12221 147 [654] 46 (2051

? * @ U u m i d l l i r d Dejlecnon-The sptcimens shall have an

lb %verage deflecuon of not more than the following:

Thickness

in [mm]

Deflection

etghths Of an inch [mm]

not requifed

not requtred

15 [MI

.I 0 1321

ail Pull Resistance-The specimens shall have an

average nail-pull resistance of not less than the following:

O i b i l - B a & e d Gymw Wailboard and Foil-Backed Pre-

decorated Gypswn Board

5.1.4.1 Foil-backed gypsum wdlboard and foil-backed pre-

decorated gypsum board shall meet all of the requirements for

gypsum wallboard and predecorated gypsum board

5.1 4.2 When tested in accbrdance with Test Methods E 96,

the permeance of foil-backed gypsum wallboard and foil-

h b a c k e d predecorated gypsum board shall be not more than 0.30

ng/Pa-s-rn2] (Desiccant Method) for the condition of

.2.1 Thzckness-The nominal thickness shall be from to

of 2 V64 in [20.4 mrnl, and with local variations of -2 %2 in

LtO.8 nun1 from the normnal thickness

5.2.2 Width-The wldth shall be up to 48 in [I220 mm] or

to 54 ln [I370 rnm], with a tolerance of %2 in (3 mm] -

under the specified width L ~ %' ~ :

jo"h5.2.3 - End Ssuareness Corners shall be souare wlth a

' tolerance of It I/B in [23 mm] in the full width of the board

, s j y d g t ? s r -

% 5.3.1 The edges f gypsum wallboard shall be either square,

beveled featured, tapered, or featured and tapered

5.3.2 The edges of predccoratcd gypsum board shall be

eirher square, beveled or featured

6.1.2 Humidified Deflection-The specimens shall have an average deflection of not more than the following:

Thickness,

in [mm]

Deflection

eighths of an inch [mm]

nat required

7s Iasl

10 (321

5 (16) not required not required

6.1.3 Nail Pull Resistance-The speclmens shall have an average nail-pull resistance of not less than the following:

'h 16.41 40 (1 781 3 6 [ 1 M ) I

n [I 5.91 ':' w(400j n 13431

not repu~red

6.1.4 Forl-Backed Gypsum Backing Board and Foil-Backed Gypsum Coreboard

6.1.4.1 Fo~l-backed gypsum backing board and foil-backed gypsum coreboard shall meet all of the requirements for gypsum backing board and gypsum coreboard

6.1.4.2 When tested In accordance with Test Methods E 96, the permeance of foil-backed gypsum baclung board and foil-backed gypsum coreboard shall be not more than 0.30 perm [17 ng/Pa.s rn2] (Deaccant Method) for the condition of

50 % relative humidiry on the face of the board, and 0 %

relative hurmdity on the back (foil-covered) side of the board

6.2 Dimensions and Tolerances of Gypsum Backing ~ o a r d

and Gypsum Coreboani:

6.2.1 Thickness-The nominal thickness shall be from 'h to

1 in [6.4 to 25 4 mm] with tolerances in the nominal thickness

of Z1/x in [ t 0 8 mm], and with local vanations of 2 1 / 1 6 in [ % 1.6 mm] from the nominal thickness

6.2.2 Widfh-The wldth shall be from 16 to 48 in [406 to

1220 mm] wlth a tolerance of '/B in [3.2 mm] under the

specified wldth

6.2.3 End Squareness Corners shall be square with a

tolerance of =% in [C-3 mrn] in the full width of the board

6.3 Edges-The edges shall be either square, beveled w [15.9) 150 [ 6 6 q so (2221 ld7 [ B S ~ ] 4s { Z O S ~

Y 1.2 HurnidiJied Deflecrion-The specimens shall have an average deflection of not more than the following:

8.1.3 Nail Pull Resistance-The specimens shall have an the foLlowing: average nail-pull resistance of not less than the following:

I

(1 2 q

Va [l 5.91

1

Length Ibt (N1

I 7.1.2 Humidified Dejlection-The specimens shall have an Board: 8.2.1 Thichess-The nominal thickness shall be '/1 or '/s in

average deflection of not more than the following: C12.7 or 15.9 mrn] wilhtolerances in the nominal thickness of

[ r 0 8 m m ] from h e nominal thickness

'/z (12.71

7.1.3 Nail Pull Resistance-The specimens shall h a v ~ an 8.2.3 End Squareness Corners shall be square with a

average nail-pull resistance of not less than the following:' tolerance of 2 Ys in [Z3 m m ] in the full width of the board

'h (12.7

Ya [15.3] ,

age water absorption of not more than 5 weight % after 2-h 9.1 Physical ~ k ~ e r t l e s of G ~ p w n Sheathing B O Q ~ /!I

9.1.1 Flexural Strength-The specimens shall be tested face .;I:

immersion

7.1.5 Sur/;?ce Water Absocption-The specimens shall have up and face down The average breaking load shall be not less

I an average surface water absorpuon of not more than 1.6 g on than the following:

1 each surface, face and back,.'afcer 2 h of elapsed time Method A Memod 8 A.A -

: 7.2 Dimensiom and Tolerances of Water-Resistant Gypsum mickne5s, Bearing E d ~ e s B~~~~~ ~d~~~

" 7.2.1 Thickness-The nominal thickness shall be % or % in Lengtn, ~ b f (NI Lengm* ID' ''1 ,b, [NI , L * w ~ ID' PI

[12.7 or 15.9 m m ] with tolerances in the nomind d u c h e s s of % [9,51 so(3561

%a (10.21 88 (391 1 32 [1421 85 [3781 28 (1 251

2% in [?0;4 ma], and with local variations o f 2 Y32 in , [1271 14891 40 14761 36 [1601

[;0.8 mm] from the nominal thickness V [I 5.91 150 (6671 so ((2221 147 (6541 , 46 (205.1

7.2.2 Width-The wldth shall be up to 48 In [I220 mm], or

up to 54 in [I370 mrnl with a tolerance of %2 In [3 nun]

under the specified w~dth

7.2.3 End Squareness Corners shall be square with a

tolerance of % % 111 [ 2 3 mm] in the full width of the board

7.3 Edges-The edges shall be either square, beveled

featured tapered, or featured and tapered

(13 8 Exterior ~ y p s u m Soffit Board

8 E Physical Propenres of Exterior Gypsum Sofit Board:

8.1.1 Flexural s;engrh-The specimens shalI be tested face

up and face down The average breaking load shall be not less

than the followmg:

Rickness

in [mml

-

Melhod A

Bearing Edges

Perpendicular I

to Panel

, L ,L ,.,I

Method A a

Bearing Edges

garallel to Panel Length I

Method B Bearing Edges Perpendicular - .

~ e t h d d B

Bearing Edges Parallel to Panel

Beanng Edges Perpendicular

lo Panel Lenach

- M6UlW D

Bearing Edges Parallel to Panel

, , ,

9.1.2 Humidified Dejection-The specimens shall have an average deflection of not more than the following:

Thickness

in [mml

% [9.5]

%a [10.2\

?4 [ I 2.71

n (15.91

Delledon

eighths ot an inch [mm]

15 [A81

12 [ X I

10 [32]

5[161 ,

9.1.3 Nail-Pull Resistance-The specimens shall have an average nail-pull resistance of not less than the.foUowing:

to Lengmv ~ ~ g t h , ~bt [NI 9.1.4 Warer Resistance of Gypsum Sheathing Board-The

specimens shall have an average water absorption of not more

fm C 1396/C 1396M - 0 4

9.1.5 Sudace 'WaterAbsorption-The specimens shall have hckness o f t % in [ + 0 4 mrn], and with local ~ a r i i t t i o ~ ~ ~ ~ f

an average surface water absorption of not more than 1.6 g on 2 I/3z in [%0.8 mrn] from the nominal thickness

each surface face, and back after 2 h of elapsed time 10.2.2 Width-The width shall be 48 in [I220 mm] with a

9.2 Dimensions and Tolerances of Gypsum Sheathing tolerance of 3/12 in [3 m m ] under the specified width

9.2.1 nickness-The nominal thickness shall be from % to tolerance of +l/s in [-t3 m]

518 /Bin [9.5 to 15.9 mm] with tolerances in the nominal thickness ,10.3 Edges-The edges shall be eirher s

of z 1 / 3 2 in [cO.R mm], and with local variations o f = % 6 in featured, tapered, or featured and tapered

9.2.2 Width-The nominal width shall be 24 or 48 in

or 1220 mm] with a tolerance of ]/a in [3.2 mm] under the ,

9.2,3 ind Squanners Co~~rs shd be square w i h a 11.1.1 Flexural 5trengfh-T%e specimens shall be tested

roierance of 21/8 in [+3 -1 in he full width of the board face up and face d ~ w n The average breaking load shal

9.3 Edges-The edges shall be either square or v-tongue less than the following:

Thicknes, Beating Edges Beanng Edges * Bearing Edges Bearing &gee 1

Perpendicular

@ Gypsum Base for ~enee; Plaster

I

in b m l to Panel Parallel to panel ' PeTendicular parallel to p a w

Length ibf (N] P a E \ g n * h ' Length, ibf [g i

Length Ibf [Nj

10.1 Physical Propenies o f , ~ ~ ~ s u m Base for veneer ~ l a s -

,

'h (1 2.7 100 14451

10.1.1 Flexural strength-The specimens shall be tested

fice up and face down The average breaking load shall be' not 11.1.2 Humidified Deflection-The specimens sh I

less than the following: , average deflection of not more than the following: I

Method A

' :in: [mm]

to Panel Length, Parallel to.Panel

'h (12.71 110 (4891 40 (I 781 107 (4761 36 (1601 11.1.3 Nail Pull Resisrnce-The specimens shall have an ,

% [15.9] ,150 [667] 50 (2221 147 (6541 46 (2051 average nail-pull resistance of not less thao the fol I

average deflection of not more than the following:

, ~ ' l 2 2 2 1

15 [ M I

requirements for gypsum lath

10.1.3 Nail Pull Resistance-The specimens shall have an

average nail-pull resistance of not less than the following:

i

E 96, the permeance of foil-backed gypsum lath shall be not

the condition of SO O/o relative humidity on the face of the

.11.2 Dimensions and Toleranc 10.1.4 Foil-Backed Gypsum Base for Veneer Plaster:

11.2.1 Thickness-The nornin 10.1.4.1 Foil-backed gypsum base for veneer plaster shall h [9.5 or 12.7

meet requirements for gypsurn base for veneer

[-C1.6 mm] from the nominal chichess I j

11.2.2 Width-The nominal width shall be

[I220 mm] with a tolerance of in [4 8 m ] i plaster shall be not more than 0.30 perm [I7 ng/Pa.r.m2]

in [3.2 over the width.,

I

I

(Desiccant Method) for the condition of 50 % relative humidity

on the face of the board, and 0 % relative humidity on the back 11.2.3 End Squareness-C~mers shall be s

tolerance of z1/4 in rZ6.4 mm] in the full width of the board L , (foil-covered) side of the board

10.2 Dimensions and Tolerances of Gypsum Base for Veneer 11.3 Edges-The edges shall be either round or square.' I

10.?.1 Thichers-The nominal thickness shall be from 3/, @ Board

to in [9.5 to 15.9 mm] with tolerances in the nominal 12.1 Physical Propenies of Gypsum Ceiling Board:

622

I

i

I

I

I

.$

-

,A$/#' C 1396/C 1396M - 04 12.1 i Flrrurol Smngrh-The specimens shall be tested 12.3 Edges-The edges shall be either square, beveled,

h c e up and face down The average breaking load shall not be featured tapered, or featured and tapered 5

less than the follow~ng:

METHOO A METHOO 8 13 Finish and Appearance

Thckness in Load lbl (N\ Loed, lbf [NI Load Ibl (N1 Load Ibl IN)

[mmj Beanng Edges Bear~nq Edges Baaring Edges Bearing Edges 13.1 The surfaces of gypsum board shall be true and free

Acmss Fiber of Parallel to Fiber Across Fiber of Parallel to Fiber from imperfections that would render it unfit for use with or

*h [12.7] 110 [489) 40 [I781 107 (4761 36 (1601

d

I

I

1

1

/

14 Sampling, Inspection, Rejection, Certification,

i ? 1.2 Humid$ed Deficiion-T'he specimens shall have an Packaging, Marking, Shipping, Handling, and

average humidified deflection of not more than %6 in [8 mm] siorage

12.1.3 Nail Pull Resisrance-The specimens shall have an

average nail-pull resistance of not less than 80 ~ b f [356 pq 14.1 Sampling, inspection rejection certification, packag-

when tested by Method A and 77 Ibf [343 N] when tested by i n g ~ marlung shpping handling, and storage of ,wsum board

12.2 Dimensions and Tolerances of Gypsum Ceiling Board

12.2.1 Thickness-The nominal thickness shall be '/2 in KeYWords

[12.7 mm] with tolerances in the nominal thickness of 2 '/6 in 15.1 ceiling; coreboard: drywall; exterior gypsum soffit

(0.4 mm] with local variations of L/32 in (0.8 mm] from the board; foil-backed: gypsum; gypsum baclung board: gypsum

12.2.2 Widrh-The width shall be up to 48 in (1220 mm] gypsum lath; gypsum sheathing; gypsum sheathing board;

with a tolerance of 3/52 in [3 m ] under the specified width gypsum wallboard; partitions; plister; predecorated gypsum

12.2.3 End Squareness Corners shall be r q u q with a board: shafrliner; sheathing: type X; veneer base; veneer

tolerance of + L/s in [3 m ] in the full width of the board plaster; wall; wallboard; water-resistanc gypsum board

APPENDM

(?+Jonmandatory Information)

T h ~ s appendix a v e r general infomation and also sugg~stions for inclusions to bc'made elsewhere by the :pecifier They are

not part of this specification

:.:: ' ' ,

The definition of.* X $ven.in 4.3.1-4.3.3'and'the alternate definition given in this appendix, are Ltknded only as a test

to define the gypsum board as meeting the req'uiiemen~ of type X products These tests do not indicate a' preferred application

nor d o they limit the use of 'the product i n other fire rated assemblies

,

All gypsum panel fbr Lhich type X is defined.except gypsum lath and shafd&er board, use the same test

for type X pioducu, therefore the v p e X definition indicates a consistent level of fire resistance

,,

I

,

X1.l Gypsum board, type X (special fire-resistant) desig- ends, and 12 in [305 mm] along intermediate studs All joints

nates gypsum board, except gypsum la&, providing a greater shall be oriented parallel to and located over studs and

fire-resistance than regular gypsum board of the same thick- staggered on opposite sides of the assembly, and I'

ness Type X (special fire-resistant) gypsum board, when tested X1.1.2 TWO hours for a M-in [12.7-mm] thickness applied I

in accordance with Test Methods E 119, shall provide the to a partition in a double-layer application on each side of 1 '

1: j

following minimum fire resistance ratings for the assemblies complying with Specification [64-mm1 deep non-ioadbearhg galvanized steel studs !l;~I

C 645, spaced 24 in [610 mm]

on center The 48-in [ 1 2 2 0 - m ] wide base layer shall be

~ 1 1 1 o n e hour for a H-in [ l 5 9 - m ] thickness applied to anached using 1-in ( 2 5 - m ] long drywall screws spaced I2 in / ill

I a partition in a single-layer application on each side of 3%-in [305 -1 on center along board edges, ends, and along I ii

,I/

I [ 9 2 - m ] deep non-loadbearing galvanized steel studs comply- intermebate studs Joints shall be oriented parallel to and

! ing w i h Specificat~on C 645, spaced 24 in (610 m.ml on locared over studs and staggered on opposite sides of h e

i

center The %in (15.9-mm] thick gypsum board 48 in [ 1220 assembly Tne 48-in [1220-n] wide face layer shall be I ! / ,

; I f

i

screws spaced 8 in [203 mrn] on center along the edges and in 1305 mm] along board edges crids, and along intermediate I

t

~- ~- - - -

- - _ - -

b

-.

@ C 13961C 1396M - 04

studs Joints shall be oriented parallel to and located over studs

offset 24 in (610 mm] from the base layerjoints and staggered

on opposite sides of the assembly

I '

?

Committee C11 has identified the location of selected changes to this specificauon since the last issue,

C 1396/C 1396M-03a that may impact the use of this specification (Approved May 1 2004)

(1) Added "water-resistant" after "combustible" in 4.1.1 (5) Deleted references to 'Treated Core

(3) Added "racing" after "lire-resistance" in 4.3.1 (6) Deleted 14.2 and 14.3

(4) Changed "classification" to "rating" in 4.3.2 and Note 3 (7) Added "ratings" after "fire resistance" in X1.1

Committee C11 has identified the location of selected changes to this specification since the last issue.C 1396

that may impact the use of this specificauon (Approved Oct 1, 2003)

( I ) Removed "recessed"~from referenced edge types through-

out the standard

, ' ,

Comminee C11 has identified the location of selected changes to thls specification since the last issue

that may impact the use of this standard (Approved June 10, 2003)

, ( I ) Added new paragraph 14.3

ASTM International takes no position respecting the validity of any p8tent rights assened in connedion with any item mentioned

In fhis standard Users of this standard am eXpWSSfy advised fhat determination ol the valid1'7y of any such patent rights, and rhe risk

of infringement of such rights, are entlrely heir own responsibiIit# - , ,

This srandard is subject irevision at any 61ne by the responsible technical committee and must be ievtewed every five years and

11 not revised, eirher reapprove0 or withdrawn Your comment.: are invited either for pvision of his srandard or for addirionalstandards and should be addmssed to ASTM International Headquarlers Your comments wrll receive careful consideration at a meeting of the

responsible rechnkal ,Wmmiftae, wtriCh You may attend If p u he1 mar your comments have not received a lair hearing you should make p u r visws Icnov to Ihe ASTM Comminee on Standards, at the a d d e s shown below

,

mis standerd is copyright& by ASTM InremationaL t o o Barf Hamor Drive PO Box C700 West Canshohccken PA 19428-2959

Unmd States Individual reprints (~ingle or multiple copies) 01 this standard may be obtained by contacting ASTM at the above

addres or at 610-832-9585 (phone) 61@832-9555 (fax), or sewice@aslm.org (e-mall); or thmugh the ASTM website

( w a s m 0 q )