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// CODE SNIPPET

1604.4 Analysis

Building Code 2018 of Illinois > 16 Structural Design > 1604 General Design Requirements > 1604.4 Analysis
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Load effects on structural members and their connections shall be determined by methods of structural analysis that take into account equilibrium, general stability, geometric compatibility and both short- and long-term material properties.
Members that tend to accumulate residual deformations under repeated service loads shall have included in their analysis the effects of added deformations expected to occur during their service life.
Any system or method of construction to be used shall be based on a rational analysis in accordance with well-established principles of mechanics. Such analysis shall result in a system that provides a complete load path capable of transferring loads from their point of origin to the load-resisting elements.
The total lateral force shall be distributed to the various vertical elements of the lateral force-resisting system in proportion to their rigidities, considering the rigidity of the horizontal bracing system or diaphragm. Rigid elements assumed not to be a part of the lateral force-resisting system are permitted to be incorporated into buildings provided that their effect on the action of the system is considered and provided for in the design. A diaphragm is rigid for the purpose of distribution of story shear and torsional moment when the lateral deformation of the diaphragm is less than or equal to two times the average story drift. Where required by ASCE 7, provisions shall be made for the increased forces induced on resisting elements of the structural system resulting from torsion due to eccentricity between the center of application of the lateral forces and the center of rigidity of the lateral force-resisting system.
Every structure shall be designed to resist the effects caused by the forces specified in this chapter, including overturning, uplift and sliding. Where sliding is used to isolate the elements, the effects of friction between sliding elements shall be included as a force.

Related Code Sections


1604.4 Structural Design, Analysis
Load effects on structural members and their connections shall be determined by methods of structural analysis that take ...
Building Code 2021 of Illinois > 16 Structural Design > 1604 General Design Requirements > 1604.4 Analysis
1604.4 Structural Design, Analysis
Load effects on structural members and their connections shall be determined by methods of structural analysis that take into account equilibrium ...
Building Code 2018 of Illinois > 16 Structural Design > 1604 General Design Requirements > 1604.4 Analysis
1810.2 Soils and Foundations, Analysis
The analysis of deep foundations for design shall be in accordance with Sections 1810.2.1 through 1810.2.5 ...
Building Code 2021 of Illinois > 18 Soils and Foundations > 1810 Deep Foundations > 1810.2 Analysis
1810.2 Soils and Foundations, Analysis
The analysis of deep foundations for design shall be in accordance with Sections 1810.2.1 through 1810.2.5 ...
Building Code 2018 of Illinois > 18 Soils and Foundations > 1810 Deep Foundations > 1810.2 Analysis
909.4 Fire Protection and Life Safety Systems, Analysis
A rational analysis supporting the types of smoke control systems to be employed, their methods of operation, the systems supporting them ...
Building Code 2021 of Illinois > 9 Fire Protection and Life Safety Systems > 909 Smoke Control Systems > 909.4 Analysis
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