G2T Specification Guide
The G2T Specification Guide can be utilized be Engineers and Architects to assist in specifying the G2T Truss and Parapet Roof System on commercial flat roof building. This includes info about the products, guidelines on when to specify each system, recommended detailing, and span charts to assist in truss sizing. G2 offers specification support upfront at no charge, so we recommend you contact us at the start of project to assist in value engineering for your roof system. We will do full designs upfront as the project moves through the design stage.
Download the official PDF (4.1 MB)
Applies to: G2T Truss, G2 Projects, G2 National, Parapet Roof System
This page summarizes the official PDF. If the two ever differ, the PDF governs. Always confirm you have the current revision.
- Current revision: 1
- Page last updated Oct 30, 2026