The core feature of a slip joist is its sliding mechanical assembly,which is designed to allow axial displacement while maintaining sufficient shear and torsional stiffness to support loads.The fit between sliding parts is engineered to minimize friction and allow smooth movement.The product typically retains the same connection and suspension interfaces as standard systems to ensure installation compatibility.The galvanized treatment aims to provide protection for the sliding contact surfaces over long-term operation.
A key specification for this product is its total telescopic travel,with common designs offering approximately 50 mm of total adjustment(±25 mm).Its cross-sectional dimensions when static match those of the main joists in the same system.The overlap length of the nested sections is calculated to ensure sufficient engagement and structural integrity even at maximum extension.The product may need to adhere to specific code requirements regarding expansion joint spacing and design.
Primarily used in ceiling systems for large,open spaces such as airport terminals,shopping mall atriums,very long corridors,and industrial facilities.It is typically integrated into the main joist grid,spanning the building's own expansion or settlement joints,or installed at designed intervals to segment large ceiling areas into independent bays.Correct application supports the long-term flatness and integrity of expansive ceilings.
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