ASTM E759-92(2005)
(Test Method)Standard Test Method for Effect of Deflection on Sprayed Fire-Resistive Material Applied to Structural Members
Standard Test Method for Effect of Deflection on Sprayed Fire-Resistive Material Applied to Structural Members
SIGNIFICANCE AND USE
The intent of this test method is to determine properties of direct-applied SFRM that may be used to provide an indication of serviceability. Satisfactory performance of fire-resistive material applied to structural members and assemblies depends upon its ability while in place to withstand the various influences that may occur during the life of the structure, as well as upon its satisfactory performance under fire tests.
This test method measures the behavior of SFRM when subjected to deflection and evaluates such phenomena as spalling and delamination under bending stress. It is an indication of the ability of SFRM to remain in place and resist removal during anticipated service conditions.
SCOPE
1.1 This test method covers a procedure for determining the effect of deflection on sprayed fire-resistive material (SFRM) applied to steel deck. These materials include sprayed fibrous and cementitious materials applied directly in contact with the structural members. The test method is applicable only to laboratory procedures.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.
1.3 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.
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Designation: E759 – 92 (Reapproved 2005)
Standard Test Method for
Effect of Deflection on Sprayed Fire-Resistive Material
Applied to Structural Members
This standard is issued under the fixed designation E759; 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 4. Significance and Use
1.1 This test method covers a procedure for determining the 4.1 The intent of this test method is to determine properties
effect of deflection on sprayed fire-resistive material (SFRM) of direct-applied SFRM that may be used to provide an
applied to steel deck. These materials include sprayed fibrous indication of serviceability. Satisfactory performance of fire-
and cementitious materials applied directly in contact with the resistive material applied to structural members and assemblies
structural members. The test method is applicable only to depends upon its ability while in place to withstand the various
laboratory procedures. influences that may occur during the life of the structure, as
1.2 The values stated in SI units are to be regarded as the well as upon its satisfactory performance under fire tests.
standard. The values given in parentheses are for information 4.2 This test method measures the behavior of SFRM when
only. subjected to deflection and evaluates such phenomena as
1.3 This standard does not purport to address all of the spalling and delamination under bending stress. It is an
safety concerns, if any, associated with its use. It is the indication of the ability of SFRM to remain in place and resist
responsibility of the user of this standard to establish appro- removal during anticipated service conditions.
priate safety and health practices and determine the applica-
5. Apparatus
bility of regulatory limitations prior to use.
5.1 Supports—Rigid base to provide at least 50 mm (2 in.)
2. Referenced Documents
bearing and a clear span between supports of 3 m (10 ft).
2.1 ASTM Standards: 5.2 Bearing Block—Approximately 50 mm (2 in.) wide,
E84 Test Method for Surface Burning Characteristics of minimum 600 mm (24 in.) long bearing surface designed to
Building Materials distribute the load across the width of the specimen.
E119 Test Methods for Fire Tests of Building Construction 5.3 Load—Any form of weights or testing machine capable
and Materials of applying a load normal to the test surface and of developing
E605 Test Methods for Thickness and Density of Sprayed a deflection of ⁄120 of the clear span of the specimen.
Fire-Resistive Material (SFRM) Applied to Structural 5.4 Deflection Gage— A dial or digital micrometer gradu-
Members ated to 0.01 mm (0.001 in.).
3. Summary of Test Method 6. Materials and Manufacture
3.1 In this test method, a cellular steel deck panel sprayed 6.1 The specimen shall consist of cellular steel deck nomi-
with fire-resistive material is subjected to bending by a vertical nal 40 mm (1 ⁄2 in.) deep, 600 mm (24 in.) wide, by 3600 mm
center load while supported horizontally at its ends. (12 ft) long, consisting of a 1.5 mm (0.060 in. (18 ga.)) thick
galvanized steel fluted top section and a 1.2-mm (0.048-in.)
galvanized steel flat bottom section welded together to form
This test method is under the jurisdiction of ASTM Committee E06 on
Performance of Buildings and is the direct responsibility of Subcommittee E06.21 four cells 150 mm (6 in.) on center.
on Serviceability.
6.2 This test method requires the application of SFRM in
Current edition approved May 1, 2005. Published May 2005. Originally
accordance with manufacturers’ published instructions. The
approved in 1980. Last previo
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