List of Contributions

Cody, the seismic values in ASCE 7-10 are based on the 2008 National Seismic Hazard model developed by USGS. The values in the 2016 edition use the 2014 National Seismic Hazard model. In comparing disaggregated values of seismic parameters obtained form the two models, it appears that in both cases, ...

ASCE 7 does not prohibit classificaton of server racks as Dead Load and could be interpretted as specifically permitting it. ASCE 7 Chapter 2 defines "Dead Load" as "Dead loads consist of the weight of all materials of construction incorporated into the building including, but not limited to, walls, ...

Stephen I believe there are a number of reasons that server racks should be considered live, as opposed to dead load. First, they are subject to change in configuration from year to year and from tenant to tenant, as new technology evolves and tenant needs change, resulting in chnage of weight. Second, ...

Bill & All Having worked on standards and code development now for more than 30 years, I can say confidently that structural failures and engineering and construction mistakes do make it into the knowledge base of the committees and do have substantive effect on the requirements of our codes and ...

An interior roof equipment screen wall can be designed for the forces in section 29.4.1, Rooftop Structures and Equipment for Buildings. This provision takes into account the elevation of the screen wall, which is the concern if using a freestanding wall load. This also answers the second part of the ...