Reinforcing Roof Joists For Mep Units

The ceiling joists create a truss to begin with i m suggesting adding another member to the truss.

Reinforcing roof joists for mep units. Place the board vertically with the ends overlapping the ceiling rafter and the joist. This scheme is predicated on achieving serious load carrying connections well thought out and installed a 35 or l clips should to it at all joints. Nail the double headers to each other three 16 d common nails every foot. If you don t have an a frame roof you can run parallel boards between the studs to further offer support and to strengthen the frame.

Tie to roof rafters at peak tie to ceiling joists roof rafters to ceiling joists at the eaves. To reinforce these members the best option is to add two angles one on either side of the affected member figure 4. Use 16 d common nails and make sure the tops of the joists are flush. Simply take 2 diagonal pieces and place them between the trusses.

Open web steel joists and joist girders for revised loading conditions. Connect roof sheathing to the roof framing with ten penny weight common or eight penny weight ring shank nails. Add the second header and direct nail this header through the trimmer joists. Part 2 of this series will discuss and demonstrate methods to modify open web steel joists and joist girders to increase the load carrying capacity or repair damage.

This webinar parallels the steel joist institute publication technical digest no. It is usually best to locate a new unit away from existing units and near an existing bearing wall or girder limiting the amount of new load on the existing joists. Direct nail the first header in to the cut joist and through the trimmer joists in to the header. Cut a 2 by 4 inch board to match the distance you measured.

Nail the board to the joist and rafter with two nails at each spot. Use wood adhesive underneath the sheathing along the connecting joint with the roof trusses. Its canam buildings business unit designs and fabricates steel joists and girders steel deck the hambro composite floor system econox. For example last month we visited an existing tilt up concrete building with steel bar roof joists for blue spruce design and construction.

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