Home made roof trusses using a home made press.
The press uses a 12T bottle jack. The usual press uses 20T, but I find that 12T is ok. These trusses have been calculated for 60 lb/sqft of snow load (Add to that a 7.5lb/sqft of dead load). These are half trusses. They will be jointed using steel strap ties.
The trusses will be installed in a garage/shed/workshop, not a home.
The frame of the press is made using 1'' (25mm) plates and 3/4'' (19mm) flats. The flexion of the press frame at max pressure is about 1/8'' (3mm). Which is acceptable. A stiffer frame would be much heavier. This one is already not a pleasure to move from joint to joint.
The truss you see took me about 1h30mn to make, and it was over 28 deg. Celsius this day.
26 авг 2024