Simpson Strong-Tie ACBH3X15.37-R1 ACBH™ 3 in. x 15-3/8 in. Joist-to-Beam Concealed Hanger
Product Description
The ACBH concealed beam hanger is made for the rigors of mass timber construction and is machined from aluminum for a high-capacity design. With an allowable stress design load capacity of up to 20 kips, it is the strongest connector in the Simpson Strong-Tie line of concealed end-grain beam hangers. Its concealed connection allows for a wood-only aesthetic while offering one- and two-hour fire resistance ratings per ASTM E119. This hanger installs easily in the factory using fully threaded Strong-Drive® SDCF Timber-CF structural screws and offers generous onsite fit-up tolerance for smooth and easy beam installation. The ACBH is manufactured and stocked in the US for reliable availability.
Available Sizes & Options
Product Details
Key Features
- High capacity
- Concealed for architectural aesthetics and fire-rated performance
- One- and two-hour fire resistance ratings per ASTM E119
- Recommended for use at beam-to-beam connections in any Seismic Design Category, and at beam-to-column connections in Seismic Design Category A or B
- Multiple router options to suit jobsite needs
- +/- 1/16" beam length tolerance on each end enables easier installation
Material
- Aluminum (ASTM B221 T6061-T6)
Finish
- None
Applications
- ACBH is recommended for dry-service applications only
Options
- Connection has been load-rated for three different screw length options in the carrying member.
- Double connectors can be used on a single joist end for increased connection capacity (see load tables).
Installation
- Use all specified fasteners; install horizontal screws first, then inclined screws.
- Centerline notch at the top of the part can be used to help locate the connector on the wood member.
- Do not overdrive SDCF screws during installation of fasteners. Predrilling lead holes for the SDCF screws is recommended if wood members tend to split or if driving the SDCF fasteners at the proper angle is difficult due to wood grain resistance. Predrilled holes for the SDCF screws shall be 3/16" diameter maximum.
- Rout carried and/or carrying member according to application needs. The minimum recommended rout width and length is 1/16" larger than the tabulated part dimensions. The recommended corner radius is 3/8" (10 mm). The backplates must seat flush against the surfaces to which they are being fastened.
- A 1/8" minimum to 1/4" maximum gap is recommended between the carried and carrying members to prevent wood-wood binding during field assembly. Fire sealant is required at the ACBH connection location when considering fire resistance. Gaps larger than 1/4" may further improve ease of installation but must be approved by the Engineer of Record when considering fire resistance.
- When attaching to the end grain of glulam members with multiple piece laminations across the width, refer to L-C-CBHSPLATLAM for more information.
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