Over the last couple of days, We took in the shortest steel I Beams into the workshop where a short piece of the top and bottom flanges, at both ends was cut away, (using the plasma cutter) so the now sticking out webbing can interlock at right angles to the sides of the longer I Beams and be bolted together (using a heavy duty right angle bracket).
End-beams-cut-to-fit-inside-flanges-of-main-beams
End-beam-with-joining-bracket
Also, we cut another piece off the 10mm thick plate to make a mounting bracket for the chimney “module” extension arm to be welded to. We just need to drill the 4 bolt holes through the plate and the top flange of the I Beam at the same time and that will be ready for completion nearer the time when we construct the roof itself.
Then, taking more slices off the 10mm thick plate we got left over on our spare steel rack collection, we made 4 square foot plates with a 20mm thick bolt rod sticking up to form foots for the scaffolding tower along with matching nuts welded to the end of lengths of tubing. A pair of the tubes are clamped into the bottom of a scaffold tower on one side with a pair of wheels on the opposite side. We can then twist the foot around to balance up the tower and remove any annoying rocking motions etc. and make our lives safer.
Scafold-tower-Wheels-and-Adjustable-feet
There are more steel work to do but that will be later on when we are building the roof proper, after all the perimeter walls are constructed.