A.R.B.S. Alternative Roof Blocking System
In an effort to provide a single source for high velocity wind roof systems, Concrecel® USA has partnered with A.R.B.S.® Inc. (Alternative Roof Blocking Systems) a pre-engineered metal roof blocking provider and Advanced Roof Assemblies, INC. a high wind roofing system manufacturer. By utilizing Concrecel and A.R.B.S. to form a superior lightweight roof deck and protect it with an Advanced Roof Assemblies wind resistant roof membranes system.
Edge Detail Layout
Expansion Joint Detail Layout
Results from Hurricane Test Laboratory, LLC.
A.R.B.S. 16GA Galvanized Edge Blocking
HTL placed a continuous load normal to the ARBS 16 GA Galvanized Edge Blocking system. HTL tested five (5) systems to failure as defined by TAS 111B of the Florida Building Code. The average failure load for all specimens was 755.00 lb/ft with a standard deviation of 51.23 lb/ft which correlates to a maximum pressure of 862.85 psf. The allowable load per Florida Building Code for roofing systems is 431.43 psf with a factor of safety of two (2) applied.
ARBS Parapet Wall Blocking
HTL placed a continuous load normal to the ARBS Parapet Wall Blocking system. HTL tested five (5) systems to failure as defined by TAS 111C of the Florida Building Code. The average failure load for all specimens was 776.00 lb/ft with a standard deviation of 45.05 lb/ft which correlates to a maximum pressure of 1330.29 psf. The allowable load per Florida Building Code for roofing systems is 665.14 psf with a factor of safety of two (2) applied.
Lightweight Solutions To Current Problems
Traditional Wood Roof Blocking
As you can see from the pictures below traditional wood blocking end perimeter metal and flashing just does not hold up... Photos courtesy of Hurricane Charlie.
