ASTM E661-03
(Test Method)Standard Test Method for Performance of Wood and Wood-Based Floor and Roof Sheathing Under Concentrated Static and Impact Loads
Standard Test Method for Performance of Wood and Wood-Based Floor and Roof Sheathing Under Concentrated Static and Impact Loads
SIGNIFICANCE AND USE
The procedures outlined will provide data that can be used to evaluate the structural performance, under concentrated loads, of roof and floor sheathing, separate from the effects of the framing, under simulated conditions representative of those in actual service.
The procedures are intended to be applied to roof or floor sheathing materials installed directly to framing. They are not intended for the evaluation of the framed assembly as a whole.
SCOPE
1.1 This test method covers procedures for determining the resistance to deflection and damage of floor and roof sheathing used in site-built construction subjected to concentrated static loads as well as impact loads from nonrigid blunt objects. It is applicable to wood and wood-based panels and boards, but is not intended to cover profiled metal decks, nor precast or cast-in-place slabs. Surface indentation is not evaluated separately from deflection.
1.2 Three applications are covered: roof sheathing, subfloors, and single floors. Roof sheathing is tested in both a dry and a wet condition, while subfloors and single floors are both tested in a dry condition, as well as a condition of having dried out after being wet. These moisture conditions are those commonly experienced with site-built construction. Where it is anticipated that sheathing will be subjected only to dry conditions during construction and use, or else to greater moisture exposure than is indicated in , the corresponding exposure conditions may be modified by agreement between the interested parties. For example, shop-built construction may be tested dry only, although the possibility of exposure to high humidity or leaks and flooding during use should be considered.
1.3 The values stated in metric (SI) units are to be regarded as the standard.
This standard does not purport to address all 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.
General Information
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:E661–03
Standard Test Method for
Performance of Wood and Wood-Based Floor and Roof
1
Sheathing Under Concentrated Static and Impact Loads
This standard is issued under the fixed designation E 661; 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.
INTRODUCTION
During construction and occupancy of a building, floor and roof sheathing are subjected to
concentrated loads that frequently govern the thickness required. Static loads may simulate either foot
traffic, or loads from fixtures, when applied through loading disks of appropriate size. Impact loads
will occur during construction and also in service.
Roof sheathing and subflooring are likely to be critical in strength or stiffness, or both, under foot
traffic and construction loads, while single-layer floors are generally critical under fixture loads, foot
traffic, and in-service impact loads. Subfloors, like single floors, must also support fixture loads, but
they will have an additional layer of material, such as underlayment above, which will help to
distribute concentrated loads.
1. Scope 1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
1.1 This test method covers procedures for determining the
responsibility of the user of this standard to establish appro-
resistance to deflection and damage of floor and roof sheathing
priate safety and health practices and determine the applica-
used in site-built construction subjected to concentrated static
bility of regulatory limitations prior to use.
loads as well as impact loads from nonrigid blunt objects. It is
applicable to wood and wood-based panels and boards, but is
2. Referenced Documents
not intended to cover profiled metal decks, nor precast or
2
2.1 ASTM Standards:
cast-in-place slabs. Surface indentation is not evaluated sepa-
D 1517 Terminology Relating to Leather
rately from deflection.
E 575 Practice for Reporting Data from Structural Tests of
1.2 Three applications are covered: roof sheathing, sub-
Building Constructions, Elements, Connections, and As-
floors, and single floors. Roof sheathing is tested in both a dry
semblies
and a wet condition, while subfloors and single floors are both
E 631 Terminology for Building Construction
tested in a dry condition, as well as a condition of having dried
2.2 Other Standards:
out after being wet. These moisture conditions are those
3
Fed. Spec. V-T-291E(1) Linen Thread
commonly experienced with site-built construction.
NOTE 1—Whereitisanticipatedthatsheathingwillbesubjectedonlyto 3. Terminology
dry conditions during construction and use, or else to greater moisture
3.1 See Terminology E 631 for terms related to this stan-
exposure than is indicated in 7.3.2, the corresponding exposure conditions
dard.
may be modified by agreement between the interested parties. For
example, shop-built construction may be tested dry only, although the
4. Summary of Test Method
possibility of exposure to high humidity or leaks and flooding during use
4.1 Roof and floor sheathing specimens are subjected to
should be considered.
concentrated loads applied through a 76-mm (3-in.) or a
1.3 The values stated in metric (SI) units are to be regarded
25-mm (1-in.) diameter loading disk, depending on the in-
as the standard.
tended use and the properties to be evaluated. They are also
1 2
This test method is under the jurisdiction of ASTM Committee E06 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Performance of Buildings and is the direct responsibility of Subcommittee E06.11 contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
on Horizontal and Vertical Structures/Structural Performance of Completed Struc- Standards volume information, refer to the standard’s Document Summary page on
tures. the ASTM website.
3
Current edition approved Oct. 1, 2003. Published November 2003. Originally AvailablefromStandardizationDocumentsOrderDesk,Bldg.4SectionD,700
approved in 1978. Last previous edition approved in 1997 as E 661 – 88 (1997). Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ----------------------
E661–03
subjectedtotheimpactofashot-filleddropbag.Specimensare 6.1.1 Supports—The framing members shall be supported
tested in a horizontal position, mounted on fully supported in order not to deflect under the applied loads. The support
framingmembersandwithloadsappliedtothetopsurfacenear
system shall include provi
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.