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// CODE SNIPPET

1617.6.2.2 Combination Along the Same Axis

NYC Building Code 2008 > 16 Structural Design > 1617 Earthquake Loads — Minimum Designlateral Force and Related Effects > 1617.6 Seismic-Force-Resisting Systems > 1617.6.2 Seismic-Force-Resisting Systems (For Use in the Simplified Analysis Procedure of Section 1617.5) > 1617.6.2.2 Combination Along the Same Axis
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For other than dual systems and shear wall-frame interactive systems, where a combination of different structural systems is utilized to resist lateral forces in the same direction, the value, R, used for design in that direction shall not be greater than the least value for any of the systems utilized in that same direction.

Exception: For light-framed, flexible diaphragm buildings, of Seismic Use Group I and two stories or less in height: Resisting elements are permitted to be designed using the least value of R for the different structural systems found on each independent line of resistance. The value of R used for design of diaphragms in such structures shall not be greater than the least value for any of the systems utilized in that same direction.

Related Code Sections


1617.6.2.2 Structural Design, Combination Along the Same Axis
For other than dual systems and shear wall-frame interactive systems, where a combination of different structural systems is utilized ...
NYC Building Code 2008 > 16 Structural Design > 1617 Earthquake Loads — Minimum Designlateral Force and Related Effects > 1617.6 Seismic-Force-Resisting Systems > 1617.6.2 Seismic-Force-Resisting Systems (For Use in the Simplified Analysis Procedure of Section 1617.5) > 1617.6.2.2 Combination Along the Same Axis
1620.3.2 Structural Design, Direction of Seismic Load
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NYC Building Code 2008 > 16 Structural Design > 1620 Earthquake Loads — Design, Detailing Requirements and Structural Component Load Effects > 1620.3 Seismic Design Category C > 1620.3.2 Direction of Seismic Load
1609.6.3.2 Structural Design, Design Wind Load Cases
of the structure, considered separately along each principal axis.    Case-2. 75 percent of the design wind pressure acting on the projected area ...
NYC Building Code 2008 > 16 Structural Design > 1609 Wind Loads > 1609.6 Simplified Wind Load Methods > 1609.6.3 Simplified Design Procedure-II > 1609.6.3.2 Design Wind Load Cases
1609.6.3.2 Structural Design, Design Wind Load Cases
, considered separately along each principal axis. Case 2. Seventy-five percent of the design wind pressure acting on the projected area ...
NYC Building Code 2014 > 16 Structural Design > 1609 Wind Loads > 1609.6 Simplified Wind Load Methods > 1609.6.3 Simplified Design Procedure II > 1609.6.3.2 Design Wind Load Cases
Article 8 Materials, Loads and Stresses [PDF] (page 48)
= distance from toe of compression flange to neutral axis, in. h= clear height of shear web, in. Iy= moment of inertia of a beam (about axis parallel ...
NYC 1938 Code [PDF] > 8 Materials, Loads and Stresses
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