Blog

puresafety menu logo

English Spanish
Quote Cart

The Guardian Fall Team Blog

The wood constructed Minor Street Apartments building required fifty window washing tie-back anchors be installed by the General Contractor.

Designed to comply with WAC, OSHA, ANSI, and IWCA requirements, these tie-back anchor points provided an ultimate load of 5,000 pounds without failure, a working load of 1,250 pounds, and an acceptable proof load of no more than 2,500 pounds without permanent deformation. These specified design load values were achieved by reinforcing the 5/8” CDX plywood structure with an additional layer of 5/8” CDX plywood and blocking of the truss framing.

The anchors locations were coordinated with other rooftop equipment and were installed at all necessary window drop locations, such that compliance with IWCA’s requirements for working limits were maintained.

Once installed, an ESG representative tested a representative sample of the twelve installed anchors to ensure that the specified proof load requirements were achieved. Sure enough, all anchor points passed the required testing.

LOCATION

Seattle, WA

System Designer

ESG Lead Design Engineer, Nathan Louws - This email address is being protected from spambots. You need JavaScript enabled to view it.

Site Services

ESG Project Coordinator, Casey Wong - This email address is being protected from spambots. You need JavaScript enabled to view it.