How Are Truss Pins Installed？

Truss Pins: Used to join trusses together. There is a small round hole at one end of the pin and an insurance card is inserted during installation to prevent the pin from falling off. There is a groove on the top of the pin in the same direction as the small round hole. When installing, the groove is parallel to the upper and lower chords, so that the insurance card can be smoothly inserted into the pin hole.

When erection of three rows of Bridges, the pins shall be installed as follows for ease of installation and disassembly: the pins of the lower first row (inner row) truss shall be inserted from the inside out. The pins of the second and third trusses are inserted from the outside to the inside; The pins in each row of upper trusses are inserted from the inside out.