What are stringers and why use them?

Stringers are introduced for various reasons each with their own specific design. 

Snap on stringers. These snap onto the pedestal head and are used to provide additional lateral support to the raised floor. They are normally introduced at floor heights of 24" and above or for use with floor panels complete with factory bonded finishes. Snap on stringers are normally designed to increase the structural performance of the raised floor. 

Bolt on stringers. These are screwed into the pedestal head and are designed as structural components and as such increase the structural performance of the raised floor system. They will also provide increased lateral stability. 

Air plenum stringers. These stringers are designed only as a means of providing an air seal to the panel joints through the use of a gasket strip. They do not provide any increase to the lateral stability or structural performance of the floor. 

Perimeter stringers. These provide additional support to cut panels around the perimeters if required by the project specification