ASTM C636/C636M-08
(Practice)Standard Practice for Installation of Metal Ceiling Suspension Systems for Acoustical Tile and Lay-In Panels
Standard Practice for Installation of Metal Ceiling Suspension Systems for Acoustical Tile and Lay-In Panels
ABSTRACT
This practice covers the standard procedures for the installation of metal ceiling suspension systems for acoustical tile and lay-in panels. Here, specifications are provided for the installation of individual components such as hangers, carrying channels, main runners, cross runners, splines, assembly devices, and ceiling fixtures. Specifications are also given for possible interference of ceiling related components, and the lighting and appearance.
SCOPE
1.1 This practice covers the installation of suspension systems for acoustical tile and lay-in panels. It is applicable to contractors whose services are utilized for installing acoustical ceilings and to other trades if their activities are responsible for interference with ceiling components or performance as defined in this recommended practice.
1.2 While the practices described in this document have equal application to rated fire-resistive suspension systems, additional requirements may have been imposed to obtain the fire endurance classification of particular floor-ceiling or roof-ceiling assemblies. These details should be obtained from the manufacturers.
1.3 Similarly, additional detailing may be necessary to meet sound attenuation requirements when ceiling plenums extend over contiguous rooms. These, too, should be obtained from the manufacturer of the acoustical material employed.
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.5 While many of the practices described in this practice have application to the installation of metal suspension systems in exterior environments, the specific design of exterior ceiling installations requires the review and approval of the architect or engineer, or both, who are responsible for the construction of the building or modifications to an existing building. While recommendations from the manufacturer should be solicited, it remains the final responsibility of the architect/engineer to ensure proper application of the materials in question.
1.6 This standard does not purport to address of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
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Designation: C636/C636M − 08
StandardPractice for
Installation of Metal Ceiling Suspension Systems for
1
Acoustical Tile and Lay-In Panels
This standard is issued under the fixed designation C636/C636M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 1.6 This standard does not purport to address of the safety
concerns, if any, associated with its use. It is the responsibility
1.1 This practice covers the installation of suspension sys-
of the user of this standard to establish appropriate safety and
tems for acoustical tile and lay-in panels. It is applicable to
health practices and determine the applicability of regulatory
contractors whose services are utilized for installing acoustical
limitations prior to use.
ceilings and to other trades if their activities are responsible for
interference with ceiling components or performance as de-
2. Installation of Components
fined in this recommended practice.
2.1 Hangers:
1.2 While the practices described in this document have
2.1.1 Where acoustical ceilings are suspended from a struc-
equal application to rated fire-resistive suspension systems,
ture of wood construction, attach hangers with suitable me-
additional requirements may have been imposed to obtain the
chanical devices either to the bottom edge of the wood joists or
fire endurance classification of particular floor-ceiling or roof-
to the vertical face of the wood joists near the bottom edge.
ceiling assemblies. These details should be obtained from the
Holding power tests certified by the manufacturer must be
manufacturers.
available on request for bottom edge attachment devices.
1.3 Similarly, additional detailing may be necessary to meet
2.1.2 Where acoustical ceilings are suspended from a struc-
sound attenuation requirements when ceiling plenums extend
ture of concrete construction, mount hangers using cast-in-
over contiguous rooms. These, too, should be obtained from
place hanger wires, hanger inserts, or other hanger attachment
the manufacturer of the acoustical material employed.
devices whose suitability has been demonstrated by standard
construction practice or by certified test data.
1.4 The values stated in either SI units or inch-pound units
2.1.3 Space hangers for carrying channels or main runners 4
are to be regarded separately as standard. The values stated in
ft 0 in. [1200 mm] on centers. If local situations allow greater
each system may not be exact equivalents; therefore, each
center distances between hangers, reduce the load-carrying
system shall be used independently of the other. Combining
capacity of the ceiling suspension system commensurate with
values from the two systems may result in non-conformance
the actual center-to-center hanger distances used. If local
with the standard.
situations allow lesser center distances between hangers, in-
1.5 While many of the practices described in this practice
crease the load-carrying capacity of the ceiling suspension
have application to the installation of metal suspension systems
system commensurate with the actual center-to-center hanger
in exterior environments, the specific design of exterior ceiling
distances used.
installations requires the review and approval of the architect
2.1.4 Each suspension wire shall not hang more than one in
or engineer, or both, who are responsible for the construction
six out of plumb unless a countersloping wire or horizontal
of the building or modifications to an existing building. While
bracing is provided. See Fig. 1 for allowable countersloping
recommendations from the manufacturer should be solicited, it
methods. Suspension wires should not press against ducts or
remains the final responsibility of the architect/engineer to
pipes.
ensure proper application of the materials in question.
2.1.5 Hangers formed from galvanized sheet metal stock
shall be suitable for suspending carrying channels or main
runners from an existing structure provided that the hangers do
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not yield, twist, or undergo other objectionable movement.
This practice is under the jurisdiction of ASTM Committee E33 on Building
and Environmental Acoustics and is the direct responsibility of Subcommittee
2.1.6 Wire hangers for suspending carrying channels or
E33.04 on Application of Acoustical Materials and Systems.
main runners from an existing structure shall be prepared from
Current edition approved April 1, 2008. Published April 2008. Originally
a minimum of No. 12-gage [2.70 mm] galvanized, soft-
approved in 1969. Last previous edition
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:C636/C636M–06 Designation:C636/C636M–08
Standard Practice for
Installation of Metal Ceiling Suspension Systems for
1
Acoustical Tile and Lay-In Panels
This standard is issued under the fixed designation C 636/C 636M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope
1.1 This practice covers the installation of suspension systems for acoustical tile and lay-in panels. It is applicable to contractors
whose services are utilized for installing acoustical ceilings and to other trades if their activities are responsible for interference
with ceiling components or performance as defined in this recommended practice.
1.2 While the practices described in this document have equal application to rated fire-resistive suspension systems, additional
requirements may have been imposed to obtain the fire endurance classification of particular floor-ceiling or roof-ceiling
assemblies. These details should be obtained from the manufacturers.
1.3 Similarly, additional detailing may be necessary to meet sound attenuation requirements when ceiling plenums extend over
contiguous rooms. These, too, should be obtained from the manufacturer of the acoustical material employed.
1.4 The values stated in either inch-poundSI units or SIinch-pound units are to be regarded separately as the standard. Within
the text, the SI units are shown in brackets. The values stated in each system aremay not be exact equivalents; therefore, each
system mustshall be used independently of the other. Combining values from the two systems may result in non-conformance with
the specification. standard.
1.5 While many of the practices described in this practice have application to the installation of metal suspension systems in
exterior environments, the specific design of exterior ceiling installations requires the review and approval of the architect or
engineer, or both, who are responsible for the construction of the building or modifications to an existing building. While
recommendations from the manufacturer should be solicited, it remains the final responsibility of the architect/engineer to ensure
proper application of the materials in question.
1.6 This standard does not purport to address of the safety concerns, if any, associated with its use. It is the responsibility of
the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory
limitations prior to use.
2. Installation of Components
2.1 Hangers:
2.1.1 Where acoustical ceilings are suspended from a structure of wood construction, attach hangers with suitable mechanical
devices either to the bottom edge of the wood joists or to the vertical face of the wood joists near the bottom edge. Holding power
tests certified by the manufacturer must be available on request for bottom edge attachment devices.
2.1.2 Where acoustical ceilings are suspended from a structure of concrete construction, mount hangers using cast-in-place
hanger wires, hanger inserts, or other hanger attachment devices whose suitability has been demonstrated by standard construction
practice or by certified test data.
2.1.3 Space hangers for carrying channels or main runners 4 ft 0 in. [1200 mm] on centers. If local situations allow greater
centerdistancesbetweenhangers,reducetheload-carrying capacity of the ceiling suspension system commensuratewiththeactual
center-to-center hanger distances used. If local situations allow lesser center distances between hangers, increase the load-carrying
capacity of the ceiling suspension system commensurate with the actual center-to-center hanger distances used.
2.1.4 Each suspension wire shall not hang more than one in six out of plumb unless a countersloping wire or horizontal bracing
is provided. See Fig. 1 for allowable countersloping methods. Suspension wires should not press against ducts or pipes.
2.1.5 Hangers formed from galvanized sheet metal stock shall be suitable for suspending carrying channels or main runners
from an existing structure provided that the hangers do not yield, twist, or undergo other objectionable movement.
2.1.6 Wire hangers for suspending carrying channels or main runners from an existing structure shall be prepared from a
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