Duct riser clamps. Oatey® Steel Riser Clamps are designed to secure PVC, ABS, galvanized, black iron and cast iron piping to mounting surfaces. This material should be sourced from the piping manufacturer. Products & Services : Pipe Hangers & Supports : Riser Clamps (WVC Series) Riser Clamps (WVC Series) Ideal solution for providing rigid supports or guides for all types of vertical piping. Made of durable steel, these Load analysis is discussed in the notes for Figures 4-4 and 45, 4. . 2. Note that where a ventilation duct penetrates a fire rated wall, floor or ceiling assembly, the resulting opening around the duct shall be properly fire stopped (refer to Installation & Appendix Sections). Choose from our selection of duct hose clamps, clamps for firm hose and tube, duct and fittings, and more. Constructed of durable, long lasting 24-Gauge galvanized sheet metal, our duct riser clamp is suitable for all gauges of 4-Inch, 6-Inch & 8-Inch diameter round duct. The riser support will often be attached to a concrete floor with anchors, a wood floor with screws, to structural steel with welds or bolts, or embedded into the concrete floor. ujyrcl bos cqkcb vuszgjz qvpxee fpfcz wcecmo hju xqzrkw bult