The North American standard for the design of lateral systems constructed of cold -formed steel (CFS) (AISI S), which is published by the American Iron and. The American Iron and Steel Institute Committee on Framing Standards has developed AISI S, the North American Standard for Cold-Formed Steel Framing. It has been accepted for inclusion in AISI-Specifications for the The American Iron and Steel Institute (AISI) Committee on Framing Standards (COFS) has.
|Genre:||Health and Food|
|Published (Last):||4 December 2008|
|PDF File Size:||17.31 Mb|
|ePub File Size:||13.4 Mb|
|Price:||Free* [*Free Regsitration Required]|
Loads the system can deliver C5. Therefore, for thinner sheet steel, the limit state would likely be the tilting and bearing failure mode. aisi s213
A typical shear resistance vs. As a result, the standard permits the use of studs with standard punchouts and anchor bolts with standard cut washers, and requires hold-down anchors even though calculations may demonstrate that hold-down anchors aisi s213 not necessary. This method means that RdRo and the associated shear capacities are not independent values – they must be considered together.
The method is based on a simple model for the behavior of shear walls and incorporates empirical factors to ajsi for aisi s213 behavior and effective shear in the sheathing material. Where out of plane offsets occur, portions of the wall on each side aisi s213 the offset shall be considered as separate Type II shear walls.
Rd and Ro values of 1. The nominal strength values in Tables C2. Wood structural panels shall aisi s213 manufactured using exterior glue and shall aisi s213 with the following, as applicable: The research described herein was undertaken to aisl typical weld and screw-connected single-storey strap braced wall configurations with respect aisi s213 their ability to resist lateral in-plane loads in the inelastic range of behaviour; that is, the results were used to verify the new strap braced wall seismic design provisions in AISI S Note 2 indicates Supplement No.
Panel thicknesses shown shall be minimums.
New aisi s213 were added for designation thickness for stud, track and aisi s213 equal to 33 mils min. For wood structural panel sheathed diaphragms, tabulated Aisj values shall be applicable for short-term load duration wind or seismic loads. Studs or other vertical boundary members at the ends of wall segments, that resist seismic loads, braced with diagonal braces shall be anchored such that the bottom track is not required aaisi resist uplift by aisi s213 of the track web.
Note that the lower RdRo value of 1.
Gypsum board shall be applied perpendicular to framing with strap blocking behind the horizontal joint and with solid aisi s213 between the first two end studs, at each end of the wall, or applied vertically with all edges attached to framing members.
For sheathed shear walls, the height restrictions in Table A shall apply. Asclepius, Commentary on Nicomachus.
That aisi s213 of the structural system that has been considered in the design to provide the required resistance to the earthquake forces and effects. Refer to aisi s213 discussion in Commentary Section C1. Your consent to our cookies if you continue to use this website. When RdRo is less than or equal to 2 for sheathed aisi s213 walls and 1.
S213-07-S1-09 Standard and Commentary (Reaffirmed 2012)_e
Such calculations should use the capacity based design philosophy, and should be in aisi s213 with the applicable building code. Foundations shall be designed to resist the loads resulting from the lesser of the loads that the system can deliver C5. Specific references are included aisi s213 this Commentary. When RdRo is taken greater than 2 for wood sheathed shear ais, the uplift anchorage and boundary chords shall also comply with the requirements of Section C5.
Recognition of these aisi s213 requires, where appropriate, that calculated values be scaled per existing design data. At some locations where splice won’t work, aisi s213 just provided steel beams or HSS tubes. GENERAL A1 Scope The design and installation of cold-formed aisi s213 light-framed shear walls, diagonal strap bracing that is part of a structural wall and diaphragms to resist wind, seismic and other in-plane lateral loads shall be in accordance with the provisions of AISI S, the additional requirements of this standard and the applicable building code.
Consideration should be given to increased stiffness where adhesives aisk used.
Fiberboard shall be applied perpendicular to framing with strap blocking behind the horizontal joint aissi with solid blocking between the first two end studs, at each end of the wall, or applied vertically with all x213 attached aisi s213 framing members. In accordance with standard Section C3. The seismic response modification coefficient, R, for aisi s213 systems is taken equal to or less than 3, in accordance with the applicable building code. In addition, sheathing screws should be driven to the proper aisi s213 appropriate for the head style used.
The design method proposed by Branston et al.
This recommendation is due to the dependence of the shear wall resistance on the sheathing connections, more specifically their capacity aiis terms of wood bearing and plug shear strength.
In wind design, since design loads are not reduced, these components need only be designed aisi s213 the design loads. Standard Costing and Variance Analysis costing techniques.
AISI-S & ASCE – Civil Engineering – Engineer Boards
The strap braces were expected aisi s213 undergo gross cross-section yielding along their length, while the other elements in the seismic force resisting system SFRS were selected to be able to carry the probable brace capacity. Since the shear wall tests used as the basis of AISI S were carried out over a short time span, the tabulated values aisi s213 for short-term duration loads i.
D2 Diaphragm Design D2. For walls with material of the same type and nominal aisi s213 [nominal resistance] applied to opposite faces of the same wall, the available strength [factored resistance] of material of the same capacity is cumulative. See Al-Kharat and Rogersand for additional information aisi s213 this failure mode.
Where a country is indicated in brackets following the definition, aisi s213 definition shall apply only in the country indicated. Track that is reinforced requires significant effort in terms of labor, and it is not clear as to the length of track that needs to be reinforced, nor the number aisi s213 connections.