The TCA Guideline For Temporary Wind Bracing of Tilt-Up Concrete Panels During Construction is intended to provide a standardized method for the design and erection of a temporary bracing system for use during construction of a Tilt-Up structure. The current OSHA requirement requires that Tilt-Up concrete panels be temporarily braced to prevent panels from overturning or collapsing during the construction of a Tilt-Up structure. Since OSHA does not specify how to prevent Tilt-Up wall panels from overturning or collapsing, the TCA developed a temporary bracing guideline for use by the construction industry.
The 2012 edition continues to base its design loadings on SEI/ASCE 37-02, however, the wind loadings are now based on ASCE 7-10 provisions. ASCE 37-02 will adopt the ASCE 7-10 wind provisions in the next revision to the publication. In addition, it is very likely that many, if not all local building codes, will endorse ASCE 7-10 in the near future. As such, the TCA decided to endorse ASCE 7-10 as the standard for temporary bracing of Tilt panels during construction.
“The 2012 edition of the TCA Wind-Bracing Guidelines is a combination of technological progress in this industry and reassurance for the performance of these systems,” states Jim Baty, TCA’s Technical Director. “We were challenged as an industry when ASCE 37 identified it would change to adopt ASCE 7 pressures. This established the concern that bracing schemes may be under-designed for the resulting wind conditions. However, through the diligent work of the engineers leading the way for this revision, we have been able to confirm that Tilt-Up bracing systems are sufficiently designed with today’s standards. This permitted us to move forward with recommendations for response design recommendations on slab thickness and integrating helical ground anchor systems to this more robust version.”