To Fix Timber Boards to a Steel Frame House, you have to Clamp the wood board to the steel frame using G-clamps on two opposite beams or joists. You need to Use two clamps on each side, one foot from the corner, and one at the bottom, one foot from the corner. After that, Drill pilot holes at each corner through the board and into the steel using a No. 6 drill bit. You must Drill a pilot hole exactly halfway between the two corner holes through the board and into the vertical steel frame, again using the No.6 drill bit. Then, drive No. 8 self-tapping screws into the pilot holes using a power screwdriver.
You should ensure at least three thread turns of the screw are visible on the inner side of the steel frame. If not enough thread is visible, you can use longer screws. Next, Remove the G-clamps so you have access to insert the remaining fixings. You have to Drill pilot holes using the No. 6 drill bit at 12-inch intervals. You need to Drive the No. 8 screws in with the power screw driver and make a visual check that the board is tight against the frame surface and at least three turns of every screw head is visible on the inside of the frame.
Forth, Clamp the next board in place using the G-clamps in the same manner as the previous board. You must complete one horizontal row before starting the next.