ASCE 7-10 Wind Load (Components & Cladding) – Does a Curved Surface Create a Discontinuity?
When determining wind load pressures for components and cladding loads, areas of discontinuity in a building (i.e. building corners) have a zone where the Gcp value is increased. This results in wind pressures that have higher values within the width of the discontinuity. In the October 2014 SE University session, Designing for ASCE 7-10 Wind […]
Do Minimum Wind Pressures Need to be Applied to Interior Walls?
During the October 2014 SE University session, Designing for ASCE 7-10 Wind Loads – Components & Cladding, Don Scott, SE, from PCS Structural Solutions, was asked the question, “Does the minimum design wind pressure of ASCE Section 30.2.2 (16 psf) apply to walls in the interior of an enclosed building?” In response, Don said that it is […]
ASCE 7-10 Wind Load – When are Buildings Exempt from Torsional Load Cases? {Video – SEU Resource Center}
As part of Chapter 27 in ASCE 7-10, Figure 27.4-8 shows the 4 different load cases that should be considered related to the wind loads. Cases 2 and 4 are the two cases that include torsional moment. Many engineers find that when they start considering all of these load cases, with wind blowing in each […]
Building Period for Wind Loads vs. Seismic Loads
During the September 2014 SE University session, Designing for ASCE 7-10 Wind Loads – Main Wind Force Resisting System, Don Scott, SE, from PCS Structural Solutions, asked and answered the question, “Why is Building Period Important?” Don talked about how the period affects the Gust Effect Factor, which in turn affects the building pressure. As part […]
Using Tuned Mass Dampers to Mitigate Floor Vibrations
The effects of vibration in a floor system, while typically not dangerous from a life safety perspective, can present a serviceability issue. To reduce the effects of vibration, engineers may consider increasing the mass of the structure or otherwise stiffening the floor. When increasing the mass or stiffness is not feasible, there are other options […]
Lessons Learned in Designing Bridge Cranes {Video}
During the May 2014 SE University session Rules of Thumb for Industrial Building Design, Bill Kussro from IBI Group presented a list of Lessons Learned in Designing Bridge Cranes. In this 4:03 clip from the SE University session, Bill reviews items including supporting joist deflection limits for under-running cranes, locating crane runways symmetrical to supporting […]
SEU BIM Forum Tip – Modifying Graphical Column Schedules {SEU Resource Center}
During the January 2014 SEU BIM Forum session Working With Schedules in Revit Structure 2014, Betsy Werra discussed changes that could be made to Graphical Column Schedules within Revit Structure. Included in this discussion were how to add and remove levels from the schedule, and how to set a range for the levels that should […]
Frequently Asked Questions About Cold-Formed Steel Design – Answered! {Video}
During the June 2014 SE University session, Dr. Roger A. LaBoube from Missouri University of Science & Technology presented on Frequently Asked Questions About Cold-Formed Steel Design. During the presentation, he addressed a number of common questions and issues that come up when designing with cold-formed steel. Two of the issues he addressed are shown […]
Spreadsheet Design Tools for HSS Connections
During the January and February 2014 SE University sessions, Kim Olson from FORSE Consulting discussed spreadsheet design tools that were being developed in conjunction with the Steel Tube Institute (STI) for different types of HSS Connections. These design tools are now available through the Steel Tube Institute under Products – Resources – Design Aids. Spreadsheet […]
HSS Truss Connections: Q&A on Welding for the Hidden Toe Partial Overlap Condition
During the February 2014 SE University Session, Kim Olson discussed gapped and overlapped truss connections. She talked about the “Hidden Toe” partial overlap condition, and welding requirements for the hidden toe. Kim noted that welding of the hidden toe is not required if the components normal to the chord differ by 20% or less, and […]