Product Supports

Technical Discussion

Design Question 1-If evidence shows the existing building SFRS is ductile, how to determine the RdRo?

Design Question 2- After the retrofit solution is incorporated, to determine the seismic load, engineers may assume the retrofitted SFRS belongs to conventional construction, i.e. RdRo=2. If retrofit objective is to retrofit the existing SFRS ductile, then how would you determine the RdRo?

Design Question 3-Why BESI does not use viscous damper?

Design Question 4-"In the USA why new buildings seismic design and existing buildings seismic retrofit design use different code, FEMA 450 and ASCE41-06?

Design Question 5-comparison between Canadian seismic design code system and American seismic design code system