ASTM D6513-14

Standard Practice for Calculating the Superimposed Load on Wood-frame Walls for Standard Fire-Resistance Tests

SIGNIFICANCE AND USE
4.1 Test Methods E119 and E1529, and other standard fire resistance test methods specify that throughout exposures to fire and the hose stream, a constant superimposed axial load be applied to a load-bearing test specimen to simulate a maximum load condition. They specify that this superimposed load shall be as nearly as practicable the maximum load allowed by design under nationally recognized structural design criteria. For this practice, the nationally recognized structural design criteria is the National Design Specification for Wood Construction (NDS).  
4.1.1 Alternatively, the standard fire resistance test methods shall be conducted by applying an axial load that is less than the maximum allowable axial load as addressed by the NDS and this practice, but these tests shall be identified in the test report as being conducted under restricted load conditions. The superimposed axial load, as well as the superimposed axial load as a percentage of the maximum allowable axial design load as addressed by the NDS and this practice shall be included in the test report.  
4.2 This practice describes procedures for calculating the superimposed axial load to be applied in standard fire resistance tests of wood-frame wall assemblies.  
4.3 Statements in either the fire resistance test method standard or the nationally recognized structural design standard supercede any procedures described by this practice.  
4.4 The NDS shall be consulted to ensure calculations are in compliance with all applicable provisions of that document.
SCOPE
1.1 This practice covers procedures for calculating the superimposed axial load required to be applied to load-bearing wood-frame walls throughout standard fire-resistance and fire and hose-stream tests.  
1.2 The calculations determine the maximum load allowed by design for wood-frame wall assemblies under nationally recognized structural design criteria.  
1.3 This practice is only applicable to those wood-frame assemblies for which the nationally recognized structural design criteria is the National Design Specification for Wood Construction (NDS).2  
1.4 The system of units to be used is that of the nationally recognized structural design criteria. For the NDS, the units are inch-pound.  
1.5 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.  
1.6 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

• Status: Historical
• Publication Date: 30-Sep-2014
• ICS: 13.220.50 - Fire-resistance of building materials and elements
• ICS: 91.060.10 - Walls. Partitions. Facades
• Technical Committee: D07 - Wood
• Drafting Committee: D07.05 - Wood Assemblies

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: D6513 − 14
Standard Practice for
Calculating the Superimposed Load on Wood-frame Walls
1
for Standard Fire-Resistance Tests
This standard is issued under the fixed designation D6513; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope E176Terminology of Fire Standards
E1529Test Methods for Determining Effects of Large Hy-
1.1 This practice covers procedures for calculating the
drocarbon Pool Fires on Structural Members and Assem-
superimposed axial load required to be applied to load-bearing
blies
wood-frame walls throughout standard fire-resistance and fire
and hose-stream tests. 2.2 Other Standards:
NDS—National Design Specification for Wood Construc-
1.2 The calculations determine the maximum load allowed
2
tion
by design for wood-frame wall assemblies under nationally
2
NDS Supplement—Design Values for Wood Construction
recognized structural design criteria.
1.3 This practice is only applicable to those wood-frame
3. Terminology
assemblies for which the nationally recognized structural
3.1 Definitions—Definitions used in this practice are in
design criteria is the National Design Specification for Wood
2 accordance with Terminology D9 and Terminology E176,
Construction (NDS).
unless otherwise indicated.
1.4 The system of units to be used is that of the nationally
3.2 Definitions of Terms Specific to This Standard:
recognizedstructuraldesigncriteria.FortheNDS,theunitsare
3.2.1 gross area, n—section area calculated from overall
inch-pound.
actual dimensions of member.
1.5 The text of this standard references notes and footnotes
3.2.2 net section area, n—sectionareacalculatedbydeduct-
whichprovideexplanatorymaterial.Thesenotesandfootnotes
ing from the gross section area the projected area of all
(excluding those in tables and figures) shall not be considered
materials removed by boring, grooving, dapping, notching, or
as requirements of the standard.
other means.
1.6 This standard does not purport to address all of the
3.2.3 superimposed load, n—The additional external load
safety concerns, if any, associated with its use. It is the
needed to be applied to the assembly to result in the calculated
responsibility of the user of this standard to establish appro-
stresses within the assembly when any dead load of the
priate safety and health practices and determine the applica-
assembly itself is accounted for in the calculations.
bility of regulatory limitations prior to use.
2. Referenced Documents 4. Significance and Use
3
2.1 ASTM Standards: 4.1 Test Methods E119 and E1529, and other standard fire
D9Terminology Relating to Wood and Wood-Based Prod- resistance test methods specify that throughout exposures to
fireandthehosestream,aconstantsuperimposedaxialloadbe
ucts
E119Test Methods for Fire Tests of Building Construction appliedtoaload-bearingtestspecimentosimulateamaximum
load condition. They specify that this superimposed load shall
and Materials
be as nearly as practicable the maximum load allowed by
1 design under nationally recognized structural design criteria.
This practice is under the jurisdiction ofASTM Committee D07 on Wood and
is the direct responsibility of Subcommittee D07.05 on Wood Assemblies.
For this practice, the nationally recognized structural design
Current edition approved Oct. 1, 2014. Published November 2014. Originally
criteria is the National Design Specification for Wood Con-
approved in 2000. Last previous edition approved in 2008 as D6513–08. DOI:
struction (NDS).
10.1520/D6513-14.
2
4.1.1 Alternatively, the standard fire resistance test methods
Available from American Forest & Paper Association, American Wood
Council, 1111 19th Street, NW, Suite 800, Washington, DC 20036
shall be conducted by applying an axial load that is less than
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
the maximum allowable axial load as addressed by the NDS
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
and this practice, but these tests shall be identified in the test
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. reportasbeingconductedunderrestrictedloadconditions.The
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D6513 − 14
superimposed axial load, as well as the superimposed axial 6.2.4 Temperature factor, C, is 1.0.
t
load as a percentage of the maximum allowable axial design 6.2.5 Size factor, C , is taken from tables in the NDS.
F
load as addressed by
...

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: D6513 − 08 D6513 − 14
Standard Practice for
Calculating the Superimposed Load on Wood-frame Walls
1
for Standard Fire-Resistance Tests
This standard is issued under the fixed designation D6513; 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.
1. Scope
1.1 This practice covers procedures for calculating the superimposed axial load required to be applied to load-bearing
wood-frame walls throughout standard fire-resistance and fire and hose-stream tests.
1.2 The calculations determine the maximum load allowed by design for wood-frame wall assemblies under nationally
recognized structural design criteria.
1.3 This practice is only applicable to those wood-frame assemblies for which the nationally recognized structural design
2
criteria is the National Design Specification for Wood Construction (NDS).
1.4 The system of units to be used is that of the nationally recognized structural design criteria. For the NDS, the units are
inch-pound.
1.5 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes
(excluding those in tables and figures) shall not be considered as requirements of the standard.
1.6 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.
2. Referenced Documents
3
2.1 ASTM Standards:
D9 Terminology Relating to Wood and Wood-Based Products
E119 Test Methods for Fire Tests of Building Construction and Materials
E176 Terminology of Fire Standards
E1529 Test Methods for Determining Effects of Large Hydrocarbon Pool Fires on Structural Members and Assemblies
2.2 Other Standards:
2
NDS—National Design Specification for Wood Construction
2
NDS Supplement—Design Values for Wood Construction
3. Terminology
3.1 Definitions—Definitions used in this practice are in accordance with Terminology D9 and Terminology E176, unless
otherwise indicated.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 gross area, n—section area calculated from overall actual dimensions of member.
3.2.2 net section area, n—section area calculated by deducting from the gross section area the projected area of all materials
removed by boring, grooving, dapping, notching, or other means.
3.2.3 superimposed load, n—The additional external load needed to be applied to the assembly to result in the calculated stresses
within the assembly when any dead load of the assembly itself is accounted for in the calculations.
1
This practice is under the jurisdiction of ASTM Committee D07 on Wood and is the direct responsibility of Subcommittee D07.05 on Wood Assemblies.
Current edition approved Feb. 1, 2008Oct. 1, 2014. Published March 2008November 2014. Originally approved in 2000. Last previous edition approved in 20002008 as
D6513 – 00.D6513 – 08. DOI: 10.1520/D6513-08.10.1520/D6513-14.
2
Available from American Forest & Paper Association, American Wood Council, 1111 19th Street, NW, Suite 800, Washington, DC 20036
3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
D6513 − 14
4. Significance and Use
4.1 Test Methods E119 and E1529, and other standard fire resistance test methods specify that throughout exposures to fire and
the hose stream, a constant superimposed axial load be applied to a load-bearing test specimen to simulate a maximum load
condition. They specify that this superimposed load shall be as nearly as practicable the maximum load allowed by design under
nationally recognized structural design criteria. For this practice, the nationally recognized structural design criteria is the National
Design Specification for Wood Construction (NDS).
4.1.1 Alternatively, the standard fire resistance test methods shall be conducted by applying an axial load that is less than the
maximum allowable axial load as ad
...