Alpine

Framing with Recommendations for Handling and Lifting ROOF TRUSSES 12' Parts of a Truss: The installation of wood trusses requires the same high degree of safety awareness as the installation of any other structural material. It is essential that prudent methods be used at all times. Trusses may be installed manually, by crane, or by forklift, depending on truss size, wall height and job conditions. Individual trusses should always be carried vertically to avoid lateral strain and damage to joints and members. Panel Length Continuous Lateral Brace Truss Plate 12 Top Chord Heel Slope (Pitch) Web Bottom Chord Bearing Point Trusses installed manually are slid into position over the sidewall and rotated into place using poles. The longer the span, the more workers are needed to avoid excessive lateral strain on the trusses. Trusses should be supported at joints and the peak while being raised. Splice Wedge Block Panel Point Span (Out To Out Of Bearings) Overhang 6" Peak Cantilever Bottom Chord Length The component manufacturing process is simple and offers the professional builder plenty of time- and costsaving resources along the way. Here's how it works: Large trusses require the most planning and attention before lifting and should be installed by a crane or forklift employing chokers, slings, spreader bars and strongbacks to prevent lateral bending. Trusses may be lifted singly, in banded groups, or preassembled in groups. Planning ahead is essential before lifting any truss. First determine the proper location of lift points and the type of rigging and lifting procedure that will assure truss balance. Tag lines should always be used to control movement of trusses during lifting and placement. House plans are sent by the builder to the truss manufacturer. There are dozens of truss manufacturers operating nationwide, but builders should research the quality and delivery costs before choosing a vendor. The manufacturer determines what loads the building designer requires to be supported within the home, how many trusses will be required, and their specific placement in the home. The manufacturer then builds the trusses, numbers them for accurate installation, and ships them to the builder on the jobsite. A detailed diagram with the placements of the trusses is sent along with the trusses to help the builder place the trusses exactly where they should be installed. Once the trusses are on the site, the builder can really start to see the benefits. The consistent size and height of the manufactured truss will mean easier sheathing material installation, and the open web design allows for utilities to be run between in the roof system without drilling or cutting holes. These benefits will reduce the amount of time trade contractors spend on site, speed up construction, and ultimately save the builder money. The technology used in the design and manufacturing of roof trusses makes them a superior choice for builders looking to streamline construction and provide a higher quality home to their customers. 60° or less Using A Spreader Bar Using A Sling Typical Tag Line Using A Strongback 10 Typical Tag Line Typical Tag Line IMPORTANT SAFETY INFORMATION: Refer to BCSI Guide to Good Practice for Handling, Installing, Restraining & Bracing of Metal Plate Connected Wood Trusses for more detailed information. This publication is jointly produced by the Truss Plate Institute and Wood Truss Council of America for proper methods of installation. Installation procedures are the responsibility of the installer. Job conditions and procedures vary considerably. Every project has different site conditions that can have an effect on the erection process. Before the first truss is erected every individual involved needs to understand the installation plan and the intended bracing requirements for a safe, efficient and accident-free jobsite. These are only guidelines and may not be proper under all conditions. Visit www.sbcindustry.com for specific details. www.itwbcg.com 3

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