Dive summary:

• Because the federal Occupational Safety and Health Administration requires that tilt-up walls be braced to prevent their tipping over or collapsing in wind but doesn't say how that should be done, the Tilt-Up Concrete Association now has guidelines that contractors can use.
• The guides use the latest ASCE information about wind speeds and surface pressures to anticipate, and is ahead of the coming changes that will bring the ASCE 37-02 up to ASCE 7-10 specifications.
• The changes reflect developments since the original 1994 guidelines that were devised for walls under 30 feet tall.

From the article:

"This confirmation 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," (Jim Baty, Technical Director of the TCA) said. ...