ASTM C1623-06
(Specification)Standard Specification for Manufactured Concrete Masonry Lintels
Standard Specification for Manufactured Concrete Masonry Lintels
ABSTRACT
This specification covers concrete masonry lintels (beams) that are solid in cross-section, are reinforced for flexure, and are made from hydraulic cement, water, and mineral aggregates with or without the inclusion of other materials. These lintels are suitable for both loadbearing and nonloadbearing applications. Compression and absorption tests shall be performed to meet the specified requirements.
SCOPE
1.1 This specification covers concrete masonry lintels (beams) that are solid in cross-section, are reinforced for flexure, and are made from hydraulic cement, water, and mineral aggregates with or without the inclusion of other materials. These lintels are suitable for both loadbearing and nonloadbearing applications.Note 1
This specification covers only concrete masonry lintels containing reinforcement. Due to building code imposed limitations on the design of masonry lintels, all lintels must contain reinforcement. Concrete masonry lintels are not typically manufactured using shear reinforcement (stirrups or other vertical reinforcement). Therefore, this standard does not address issues related to such. For further guidance, refer to Building Code Requirements for Masonry Structures, ACI 530 /ASCE 5 /TMS 402. Prestressed concrete lintels are not covered by this standard.
1.2 Lintels are manufactured using a no-slump concrete mix to provide a surface texture similar to that of concrete masonry. This specification applies to both machine-made and hand-tamped concrete masonry lintels intended for use in concrete masonry applications.
1.3 Concrete masonry lintels covered by this specification are made from lightweight or normal weight aggregates, or both.
1.4 This specification does not address the design or analysis of lintel capacity. Structural evaluations must be performed separately. The strength of a lintel is a function of factors including, but not limited to, the characteristics of the materials used in manufacturing (concrete materials and reinforcement), the amount and location of reinforcement, and the manufacturing and curing procedures. For design and analysis methods, refer to Building Code Requirements for Masonry Structures, ACI 530 /ASCE 5 /TMS 402.
1.5 This specification does not cover U-shaped lintels or those of other cross-sections that are not 100 % solid.
1.6 This specification does not cover lintels of grouted concrete masonry lintels, or precast or cast-in-place lintels of slump concrete.
1.7 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.
1.8 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
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: C1623 – 06
Standard Specification for
1
Manufactured Concrete Masonry Lintels
This standard is issued under the fixed designation C1623; 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* 1.7 The text of this standard references notes and footnotes
that provide explanatory material. These notes and footnotes
1.1 This specification covers concrete masonry lintels
(excluding those in tables and figures) shall not be considered
(beams) that are solid in cross-section, are reinforced for
as requirements of the standard.
flexure, and are made from hydraulic cement, water, and
1.8 The values stated in inch-pound units are to be regarded
mineral aggregates with or without the inclusion of other
as the standard. The values given in parentheses are for
materials. These lintels are suitable for both loadbearing and
information only.
nonloadbearing applications.
NOTE 1—This specification covers only concrete masonry lintels con- 2. Referenced Documents
taining reinforcement. Due to building code imposed limitations on the
2
2.1 ASTM Standards:
design of masonry lintels, all lintels must contain reinforcement. Concrete
A615/A615M Specification for Deformed and Plain
masonry lintels are not typically manufactured using shear reinforcement
Carbon-Steel Bars for Concrete Reinforcement
(stirrups or other vertical reinforcement).Therefore, this standard does not
A706/A706M Specification for Low-Alloy Steel Deformed
addressissuesrelatedtosuch.Forfurtherguidance,referto Building Code
Requirements for Masonry Structures, ACI 530 / ASCE 5 / TMS 402.
and Plain Bars for Concrete Reinforcement
Prestressed concrete lintels are not covered by this standard.
A996/A996M Specification for Rail-Steel and Axle-Steel
Deformed Bars for Concrete Reinforcement
1.2 Lintels are manufactured using a no-slump concrete mix
C33 Specification for Concrete Aggregates
to provide a surface texture similar to that of concrete masonry.
C140 Test Methods for Sampling and Testing Concrete
This specification applies to both machine-made and hand-
Masonry Units and Related Units
tamped concrete masonry lintels intended for use in concrete
C150 Specification for Portland Cement
masonry applications.
C331 Specification for Lightweight Aggregates for Con-
1.3 Concrete masonry lintels covered by this specification
crete Masonry Units
are made from lightweight or normal weight aggregates, or
C595 Specification for Blended Hydraulic Cements
both.
C618 Specification for Coal Fly Ash and Raw or Calcined
1.4 This specification does not address the design or analy-
Natural Pozzolan for Use in Concrete
sis of lintel capacity. Structural evaluations must be performed
C989 Specification for Slag Cement for Use in Concrete
separately. The strength of a lintel is a function of factors
and Mortars
including,butnotlimitedto,thecharacteristicsofthematerials
C1157 Performance Specification for Hydraulic Cement
used in manufacturing (concrete materials and reinforcement),
C1209 Terminology of Concrete Masonry Units and Re-
the amount and location of reinforcement, and the manufac-
3
lated Units
turing and curing procedures. For design and analysis methods,
C1232 Terminology of Masonry
refer to Building Code Requirements for Masonry Structures,
C1240 Specification for Silica Fume Used in Cementitious
ACI 530 / ASCE 5 / TMS 402.
Mixtures
1.5 This specification does not cover U-shaped lintels or
C1262 Test Method for Evaluating the Freeze-Thaw Dura-
those of other cross-sections that are not 100 % solid.
bility of Dry-Cast Segmental Retaining Wall Units and
1.6 This specification does not cover lintels of grouted
Related Concrete Units
concrete masonry lintels, or precast or cast-in-place lintels of
2.2 Other Standards
slump concrete.
1 2
This specification is under the jurisdiction of ASTM Committee C15 on For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Manufactured Masonry Units and is the direct responsibility of Subcommittee contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
C15.03 on Concrete Masonry Units and Related Units. Standards volume information, refer to the standard’s Document Summary page on
Current edition approved Dec. 1, 2006. Published January 2007. Originally the ASTM website.
3
approved in 2005. Last previous edition approved in 2005 as C1623 – 05. DOI: Withdrawn. The last approved version of this historical standard is referenced
10.1520/C1623-06. on www.astm.org.
*ASummary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Co
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.