The horizontal line formed by the joining of the top edges of two upward sloping roof surfaces. Those states concerning safety are called the ultimate limit states. There are several methods whereby holes can be cut in the field, such as a hole-punch, hole saws, and plasma cutters.
The minimum flange width for track members was included in the standard to accommodate an edge joint of sheathing. This appendix includes the provisions that are applicable to the United States and Mexico only. Damage assessment is not within the purview of this standard.
North American Standard for
This method will often be desirable when bearing walls are stick-framed instead of panelized and precompressed. Magnitude of the load specified by the applicable building code, not including load factors. When installing wiring or cables within a framing member e.
Methods that should be considered may include specifying a less corrosive pressure treatment sodium borate, organic preservative systems, etc. That portion of a framing member that connects the flanges. Cold-Formed steel framing with structural wood sheathing. As a result, it is necessary to establish a common platform by clearly stating the meaning of specific terms for the purpose of this standard and other standards that reference this standard. Provisions described as permitted are optional, and the election to use such provisions is at the discretion of the user.
This appendix provides information and references needed to determine the member buckling stresses or stress resultants with either numerical or analytical approach. In these cases, watch ghost rider 2 online no the connection remained intact and was capable of resisting uplift forces and preventing stud weak axis and torsional displacement.
Diaphragm and shear wall boundary member to which the diaphragm transfers forces. The Committee acknowledges and is grateful for the contributions of the numerous researchers, engineers, and others who have contributed to the body of knowledge on the subject.
This chapter determines the shear strengths of members with or without holes, with or without web stiffeners, and web crippling strengths. Roof, floor or other membrane or bracing system that transfers in-plane forces to the lateral force resisting system. Where a country is indicated in square brackets following the definition, the definition shall apply only in the country indicated. Steel straps, applied diagonally to form a vertical truss as part of the lateral force resisting system. This appendix includes the provisions that apply to Canada only.
When these ties are connected to steel stud backup, contact between dissimilar metals can occur. The manufacturing tolerances for length, web width, camber, bow, twist, etc. Where the following terms appear in this standard in italics, they shall have the meaning herein indicated. Determines the required strength by considering initial imperfections and adjustment of stiffness in the structural analysis. The span made by one continuous structural member without any intermediate supports.
In this new edition, the above safety and resistance factors have been revised to provide better alignment between the testing provisions and the provisions for rational engineering analysis. The materials set forth herein are for general purposes only. The ultimate limit state for strength is the maximum load-carrying capacity. The minimum base steel thickness expressed in mils and rounded to a whole number. This is a relatively simple criterion to verify.
Customary units shall be used for either U. In the standard, blocking is defined to transfer shear force or to stabilize members.
Determines the required strength through linear elastic analysis. The intent of specifying that the track and joist webs are not to be in direct contact with each other is to prevent floors from creating an unwanted noise e. The ratio of the length longer dimension to the width shorter dimension of the building. Product of a specified load and appropriate load factor. This research serves as the basis for the requirements of the standard.
This standard includes Sections A through E in their entirety. Research at the University of Missouri-Rolla, Sokol et al. Structural elements that are installed to provide restraint or support or both to other framing members so that the complete assembly forms a stable structure. For all thickness of materials, testing has shown that the gap between the sheathing and the floor should be equal to or greater than the gap between the stud and the track. Construction where the vertical and horizontal structural elements are primarily formed by a system of repetitive cold-formed steel or wood framing members.
In this edition, the country-specific provisions are consolidated or eliminated wherever possible. With pre-compression, it can be relatively ensured that the stud will be seated in the track, regardless of the gap after pre-compression.
Additional material that is attached to the web to strengthen the member against web crippling. The maximum end gap tolerance specified by this standard is based on traditional industry practice. Daniel Ernesto Harris Bernal. Popular in Science And Technology.
Hydraulic shears, Hydraulic hole punches, Portable hydraulic shears, Hand-held electric shears, Aviation snips, and Portable hole punches. Magnitude of the load specified by the applicable building code. Where there is a conflict between this standard and other reference documents, the requirements contained within this standard shall govern.
The metallic coated substrate shall meet the requirements of metallic coated. Selection of a minimum screw size is based on the total sheet thickness of the connection. In the field, these web holes may also be referred to as punchouts, utility holes, perforations and web penetrations. The width of insulation shall be dimensionally compatible with the cold-formed steel framing. The horizontal projection of the roof measured from the outside face of exterior wall framing to the outside edge of the roof.
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