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ASTM C1491-01a

(Specification)

Standard Specification for Concrete Roof Pavers

Standard Specification for Concrete Roof Pavers

SCOPE
1.1 This specification covers concrete roof pavers that are machine-made from portland cement, water, and suitable mineral aggregates with or without the inclusion of other materials, for use as roof ballast and protection of roof membranes.Note 1—The design of roof ballast systems for resisting wind uplift is beyond the scope of this specification. Building codes and other standards should be consulted in designing for wind uplift resistance.
1.2 The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.
1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

General Information

Status
Historical
Publication Date
09-Dec-2001
ICS
91.060.20 - Roofs
Technical Committee
C15 - Manufactured Masonry Units
Drafting Committee
C15.03 - Concrete Masonry Units and Related Units
Current Stage
Ref Project

Relations

Replaces
ASTM C1491-01 - Standard Specification for Concrete Roof Pavers
Effective Date
10-Dec-2001
Replaced By
ASTM C1491-03 - Standard Specification for Concrete Roof Pavers
Effective Date
10-Jun-2003
Referred By
ASTM C1884-23 - Standard Specification for Manufactured Concrete Ballast Units
Effective Date
10-Dec-2001
Referred By
ASTM C140/C140M-23 - Standard Test Methods for Sampling and Testing Concrete Masonry Units and Related Units
Effective Date
10-Dec-2001
Referred By
ASTM C1232-21a - Standard Terminology for Masonry
Effective Date
10-Dec-2001

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ASTM C1491-01a - Standard Specification for Concrete Roof Pavers
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Standards Content (Sample)

NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
Designation: C 1491 – 01a
Standard Specification for
1
Concrete Roof Pavers
This standard is issued under the fixed designation C 1491; 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.
1. Scope * bility of Manufactured Concrete Masonry Units and Re-
3
lated Concrete Units
1.1 This specification covers concrete roof pavers that are
machine-made from portland cement, water, and suitable
3. Terminology
mineral aggregates with or without the inclusion of other
3.1 Terminology defined in Terminology C 1209 and Ter-
materials, for use as roof ballast and protection of roof
minology C 1232 shall apply to this specification.
membranes.
4. Material
NOTE 1—The design of roof ballast systems for resisting wind uplift is
beyond the scope of this specification. Building codes and other standards
4.1 Cementitious Materials—Materials shall conform to the
should be consulted in designing for wind uplift resistance.
following applicable specifications:
1.2 The text of this standard references notes and footnotes
4.1.1 Portland Cement—Specification C 150.
that provide explanatory material. These notes and footnotes
4.1.2 Modified Portland Cement—Portland cement con-
(excluding those in tables and figures) shall not be considered
forming to Specification C 150, modified as follows:
as requirements of the standard.
4.1.2.1 Limestone—Limestone, with a minimum 85 % cal-
1.3 The values stated in inch-pound units are to be regarded
cium carbonate (CaCO ) content, shall be permitted to be
3
as the standard. The values given in parentheses are for
added to the cement, provided the requirements of Specifica-
information only.
tion C 150 are modified as follows:
(1) Limitation on Insoluble Residue—1.5 %.
2. Referenced Documents
(2) Limitation on Air Content of Mortar—Volume percent,
2.1 ASTM Standards:
22 % max.
2
C 33 Specification for Concrete Aggregates
(3) Limitation on Loss on Ignition—7 %.
C 140 Test Methods for Sampling and Testing Concrete
4.1.3 Blended Cements—Cement conforming to either
3
Masonry Units and Related Units
Specification C 595 or Specification C 1157.
4
C 150 Specification for Portland Cement
4.1.4 Pozzolans—Specification C 618.
C 331 Specification for Lightweight Aggregates for Con-
4.1.5 Blast Furnace Slag—Specification C 989.
2
crete Masonry Units
4.2 Aggregates—Aggregates shall conform to the following
4
C 595 Specification for Blended Hydraulic Cements
specifications, except that grading requirements shall not
C 618 Specification for Coal Fly Ash and Raw or Calcined
necessarily apply:
Natural Pozzolan for Use as a Mineral Admixture in
4.2.1 Normal Weight Aggregates—Specification C 33.
2
Concrete
4.2.2 Lightweight Aggregates—Specification C 331.
C 989 Specification for Ground Granulated Blast-Furnace
4.3 Other Constituents—Air-entraining agents, coloring
2
Slag for Use in Concrete and Mortars
pigments, integral water repellents, finely ground silica, and
4
C 1157 Performance Specification for Hydraulic Cement
other constituents shall be previously established as suitable for
C 1209 Terminology of Concrete Masonry Units and Re-
use in concrete roof pavers and shall conform to applicable
3
lated Units
ASTM standards or shall be shown by test or experience
3
C 1232 Terminology of Masonry
satisfactory to the purchaser to be not detrimental to the
C 1262 Test Method for Evaluating the Freeze-Thaw Dura-
durability of the units or any material customarily used in
concrete roof pavers.
1
This specification is under the jurisdiction of ASTM Committee C15 on
5. Physical Requirements
Manufactured Masonry Units and is the direct responsibility of Subcommittee
C15.03 on Concrete Masonry Units and Related Units. 5.1 At the time of delivery to the work site, the units shall
Current edition approved Dec. 10, 2001. Published February 2002. Originally
conform to the physical requirements of Table 1 and shall have
published as C 1491–01. Last previous edition C 1491–01.
a minimum net area average compression strength (average of
2
Annual Book of ASTM Standards, Vol 04.02.
3
3 units) of 3000 psi (20.68 MPa) with no individual unit
Annual Book of ASTM Standards, Vol 04.05.
4
Annual Book of ASTM Standards, Vol 04.01.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
NOTICE: This standard has either been superceded and replaced by a new version or discontinued.
Contact ASTM International (www.astm.org) for the latest information.
C 1491
TABLE 1 Absorpti
...

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5.1 This test method is a standard procedure for determining water leakage through metal roof panel system sideseams, endlaps, and roof plane penetrations when the roof system is subjected to a specified static water pressure head.
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1.7 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.  
1.8 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific precautionary statements, see Section 7.  
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