Standard Test Method for Wind Resistance of Concrete and Clay Roof Tiles (Wind Tunnel Method)

SIGNIFICANCE AND USE
It is known that the observed effects of wind simulated in a wind-tunnel apparatus are related to the effects observed from natural wind. The resistance of tiles to simulated wind in this test relates to the resistance of the tiles to the effects of natural wind when they are applied to a roof. One factor in the resistance of the tiles to the effects of both natural and simulated wind is the method of attachment specified in the manufacturer's instructions. This test method determines the uplift forces acting as a result of the simulated wind when tile are attached to a section of roof deck in accordance with the manufacturer's instructions. Natural wind conditions differ with respect to intensity, duration, and turbulence; these conditions are beyond the means of this test method to simulate.
SCOPE
1.1 This test method covers a procedure to determine the resistance of concrete and clay roof tiles to simulated wind effects in a wind-tunnel apparatus. Simulated wind velocities of 70 mph (31 m/s) to 130 mph (58 m/s) are employed.
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
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.

General Information

Status
Historical
Publication Date
31-May-2009
Current Stage
Ref Project

Relations

Effective Date
01-Jun-2009

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ASTM C1569-03(2009) - Standard Test Method for Wind Resistance of Concrete and Clay Roof Tiles (Wind Tunnel Method)
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: C1569 − 03 (Reapproved 2009)
Standard Test Method for
Wind Resistance of Concrete and Clay Roof Tiles (Wind
Tunnel Method)
This standard is issued under the fixed designation C1569; 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 2.2 SBCCI Standards:
SBCCI SSDT 11 SBCCI Test Standard for Determining
1.1 This test method covers a procedure to determine the
Wind Resistance of Concrete or Clay Roof Tiles
resistance of concrete and clay roof tiles to simulated wind
effects in a wind-tunnel apparatus. Simulated wind velocities
NOTE 1—This standard is based on the International Code Council’s
ICC/SBCCI SSTD 11 Test Standard for Determining Wind Resistance of
of 70 mph (31 m/s) to 130 mph (58 m/s) are employed.
Concrete or Clay Roof Tiles, and work derived from the tile industry’s
1.2 The values stated in inch-pound units are to be regarded
testing programs completed in the Redland Wind Tunnel in the UK.
as standard. The values given in parentheses are mathematical
2.3 ASCE Standards:
conversions to SI units that are provided for information only
ASCE 7 Minimum Design Loads for Buildings and Other
and are not considered standard.
Structures
1.3 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
3. Terminology
responsibility of the user of this standard to establish appro-
3.1 Definitions—For definitions of terms used in this test
priate safety and health practices and determine the applica-
method refer to Terminology C43, and Specifications C1167
bility of regulatory limitations prior to use.
and C1492.
2. Referenced Documents
4. Significance and Use
2.1 ASTM Standards:
4.1 It is known that the observed effects of wind simulated
C43 Terminology of Structural Clay Products (Withdrawn
in a wind-tunnel apparatus are related to the effects observed
2009)
from natural wind. The resistance of tiles to simulated wind in
C67 Test Methods for Sampling and Testing Brick and
this test relates to the resistance of the tiles to the effects of
Structural Clay Tile
natural wind when they are applied to a roof. One factor in the
C140 Test Methods for Sampling and Testing Concrete
resistance of the tiles to the effects of both natural and
Masonry Units and Related Units
simulated wind is the method of attachment specified in the
C1167 Specification for Clay Roof Tiles
manufacturer’s instructions. This test method determines the
C1492 Specification for Concrete Roof Tile
uplift forces acting as a result of the simulated wind when tile
C1568 Test Method for Wind Resistance of Concrete and
are attached to a section of roof deck in accordance with the
Clay Roof Tiles (Mechanical Uplift Resistance Method)
manufacturer’s instructions. Natural wind conditions differ
C1570 Test Method for Wind Resistance of Concrete and
Clay Roof Tiles (Air Permeability Method) with respect to intensity, duration, and turbulence; these
conditions are beyond the means of this test method to
simulate.
This test method is under the jurisdiction of ASTM Committee C15 on
5. Apparatus
Manufactured Masonry Units and is the direct responsibility of Subcommittee
C15.06 on Roofing Tile.
5.1 The test assembly of tiles attached to a section of roof
CurrenteditionapprovedJune1,2009.PublishedJuly2009.Originallyapproved
in 2003. Last previous edition approved in 2003 as C1569 – 03. DOI: 10.1520/ deck is identical to that used in Test Method C1568 (Mechani-
C1569-03R09.
cal Uplift Method) except that tile are not fitted with a
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
load-transfer device.
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
5.2 The test assembly of tiles attached to the roof deck
the ASTM website.
section is positioned on the floor of the wind tunnel apparatus
The last approved version of this historical standard is referenced on
www.astm.org. as shown in Fig. 1.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
C1569 − 03 (2009)
FIG. 1 Test Assembly Location in the Wind Tunnel Apparatus
6. Conditioning 7.7 The wind speed over the test assembly shall be mea-
sured using a pitot-static tube as shown in Fig. 2. The
6.1 See the conditioning specified in Test Method C1568
Pitot-static tube shall be positioned 4 in. (102 mm) above the
(Mechanical Uplift Method) for each specific installation
tiles in the free stream. Pressure tube connections shall be
system being investigated.
made to the pitot-static tube so that the total pressure head
(pitot + static) and the static pressure alone can be measured.
7. Procedure
The velocity (dynamic) pressure shall be determined by
7.1 Install the tile in the same manner as on a roof, in
subtracting the static pressure from the total head.
accordance with the manufacturer’s instructions, on a small
7.8 The wind tunnel shall be taken up to a wind speed of 70
section of roof deck constructed to fit within the wind tunnel
mph (31 m/s) measured at the pitot-static tube position. This
apparatus. The rafters shall be capable of being securely
speed will he held steady for 60 s and then readings shall be
anchored to the floor of the wind tunnel apparatus, and the
taken. The wind speed will then increase to 80 mph (36 m/s)
sheathing firmly nailed to the rafters. Roofing underlayment is
and be held at this speed for 60 s before the readings are taken.
installed on top of the sheathing and, if required, battens are
This procedure will be repeated in 10 mph (4 m/s) increments
nailed to the sheathing. The tile, underlayment system, and
until a wind speed of 130 mph (58 m/s) is reached, the
roof deck section constitute the test assembly.
maximum wind speed of the wind tunnel is reached, or the test
7.2 The test assembly for the tile installation system being
assembly has failed. If the test assembly fails, the wind speed
investigated shall be installed
...

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