Specifications include, but are not limited to: A. Install piping free of sags and bends.; B. Install fittings for changes in direction and branch connections.; 3.2 HANGERS AND SUPPORTS A. Comply with MSS SP-69 and MSS SP-89. Install building attachments within concrete or to structural steel.; B. Install hangers and supports to allow controlled thermal and seismic movement of piping systems.; C. Install powder-actuated fasteners and mechanical-expansion anchors in concrete after concrete is cured. Do not use in lightweight concrete or in slabs less than 4 inches thick.; D. Load Distribution: Install hangers and supports so piping live and dead loading and stresses from movement will not be transmitted to connected equipment.; E. Horizontal-Piping Hangers and Supports: Unless otherwise indicated and except as specified in piping system Specification Sections, install the following types: 1. Adjustable Steel Clevis Hangers (MSS Type 1): For suspension of noninsulated or insulated stationary pipes, NPS 1/2 to NPS 30.; 2. Pipe Hangers (MSS Type 5): For suspension of pipes, NPS 1/2 to NPS 4 to allow offcenter closure for hanger installation before pipe erection.; 3. Adjustable Steel Band Hangers (MSS Type 7): For suspension of noninsulated stationary pipes, NPS 1/2 to NPS 8.
