A significant source of structural engineering input relating to design codes in the late 1990s and early 2000s was the 1997 Uniform Building Code (UBC) Lateral Design provisions, which were most widely used in seismic and wind-resistant design. All these were provisions to indicate the minimum considerations in calculating and resisting the lateral loads so that the buildings could be capable of resisting the forces of earthquakes, wind pressures, and other horizontal loads.
The UBC 1997 went further in providing refined seismic zone classifications, importance factors and response modification factors that assisted engineers in making safer and efficient buildings.
Practically, the 1997 UBC lateral force process reflected the pattern of calculating the base shear, and dividing among the heights in the structure, as well as making sure that the lateral load-resisting systems, such as shear walls, braced frames, or moment frames, were well detailed to perform during the extreme events.
Despite being superseded by the International Building Code (IBC) and ASCE 7 standards, the 1997 UBC can still provide useful information to engineers on older buildings, retrofitting works or those on an academic basis. Resources available, such as readily downloadable Excel sheets of UBC lateral designs of 97 designs, can make calculations very easy, application of formulas automated, and the risk of making manual errors is dramatically cut down.
Another Excel Sheet related to the UBC 1997 lateral design
IBC 2000
- SEISMIC ANALYSIS BASED ON IBC 2000 (Equivalent Lateral-Force Procedure, Sec.. 1617.4)
- Seismic Analysis Based on IBC 2000
- Redundancy Factor, r, Based on IBC 2000
Seismic design
Seismic Design for Special Moment Resisting Frame Based on ACI 318-02 FOR BEAM
Seismic Design for Special Moment Resisting Frame Based on ACI 318-02 FOR COLUMN
Seismic Design for Special Moment Resisting Frame Based on ACI 318-02 FOR JOINTS
