ASTM C1242-02

Designation:C1242–02
Standard Guide for
Selection, Design, and Installation of Exterior Dimension
1
Stone Anchors and Anchoring Systems
This standard is issued under the fixed designation C 1242; 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.
INTRODUCTION
Natural building stone is chosen as a building’s cladding for its beauty which endures with minimal
maintenance. Stone is durable when used properly. Exercising good judgment when selecting the
particular stone, determining the quarrying and fabrication techniques, designing the method of
attachment, and installing all components correctly maximizes these benefits. A properly executed
stonecladdingisdesignedandinstalledwithinthecapabilitiesandlimitationsofthestoneandsupport
system to resist all forces that work on them.
This guide presents design principles that require consideration when designing anchorages and
evaluating exterior stone to be compatible with its proposed use. It is an overview of current
techniques and a review of minimum requirements for sound stone engineering and construction. The
guide does not list all possible methods of attachment nor does it provide a step-by-step procedure for
stone anchor engineering. Knowledge gained from new engineering designs, testing of applications,
and the investigation of existing problems are continually reviewed to update this guide. Comment
from users is encouraged.
Good judgment by architects, engineers, and contractors when specifying, designing, engineering,
and constructing stone and other work that interfaces stone is necessary to use this guide. Users of this
guide should combine known performance characteristics of the stone, the building’s structural
behavior, and knowledge of materials and construction methods with proven engineering practice.
1. Scope 1.3.3 The anchoring of stone panels to subframes or to
curtainwall components with stone cladding preassembled
1.1 This guide covers the categories of anchors and anchor-
before these support systems are attached to the building
ing systems and discusses the design principles to be consid-
structure, and
ered in selecting anchors or systems that will resist gravity
1.3.4 The supervision and inspection of fabrication and
loads and applied loads.
installation of the above.
1.2 This guide sets forth basic requirements for the design
1.4 Observe all applicable regulations, specific recommen-
of stone anchorage and provides a practical checklist of those
dations of the manufacturers, and standards governing inter-
design considerations.
facing work.
1.3 This guide pertains to:
1.5 The values stated in inch-pound units are to be regarded
1.3.1 The anchoring of stone panels directly to the building
as the standard. The SI units given in parentheses are for
structure for support,
information only.
1.3.2 The anchoring of stone panels to subframes or to
1.6 This standard does not purport to address all of the
curtainwall components after these support systems are at-
safety concerns, if any, associated with its use. It is the
tached to the building structure,
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
1
This guide is under the jurisdiction of ASTM Committee C18 on Dimension bility of regulatory limitations prior to use. (See Tables 1 and
Stone and is the direct responsibility of Subcommittee C18.06 on Anchorage
2.)
Components and Systems.
Current edition approved March 10, 2002. Published July 2002. Originally
published as C 1242 – 93. Last previous edition C 1242 – 00.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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C1242
TABLE 2 Dimension Stone Test Methods
2. Referenced Documents
Measures ASTM Test Method
2.1 ASTM Standards:
liquid porosity and relative density C 97
C 97 Test Methods for Absorption and Bulk Specific Grav-
combined shear with tensile unit strength from bending C 99
2
ity of Dimension Stone
ultimate crushing unit strength C 170
C 99 Test Method for Modulus of Rupture of Dimension
primary tensile unit strength from bending C 880
2
capacity and deflections of panels assembled with C 1201
Stone
2 their anchors onto their supporting backup structure
C 119 Terminology Relating to Dimension Stone
individual anchor stength C 1354
C 170 Test Method for Compressive Strength of Dimension
accelerated production of service life E 632
2
Stone
2
C 406 Specification for Roofing Slate
C 503 Specification for Marble Dimension Stone (Exte-
anchor type applications, and installation workmanship to
2
rior)
assist designers and installers to achieve a proper and durable
2
C 615 Specification for Granite D
...