Abstract: Devices for mounting objects on space frame truss or other structural members are provided.

Abstract: Various embodiments of the present disclosure provide a joint edge assembly and method of positioning and installing joint edge assembly for adjacent concrete slabs. The method includes positioning the joint edge assembly in an offset position from the joint. The method of various embodiments also includes using a plurality of height adjusters or plates fixed to the slab engagement surface of the one of the joint edge members to adjust or assist in adjusting the height of the joint edge assembly relative to the formwork and relative to the plane of the top surfaces of the concrete slabs.

Abstract: A stair box system made of a stair box core, stringers, risers and treads. The inner surfaces of the stringers have a discontinuous series of mortises positioned to engage only with the treads. Each tread is beveled from the front to back surfaces and each of the riser is beveled from the top to the bottom surface. Each tread features one or more notches cut into its back surface and each riser includes a complementary hook cut into its bottom surface. The hooks on the risers engage the notches on the treads forming an open-faced channel. Removable covers fit over the treads of the stair box core. These covers protect the stair box core and/or they feature decorative building materials like hardwood or tile. The system allows the user to upgrade their stairs by replacing the covers with covers featuring a different finished surface.