I am designing a roof rack for my car that attaches to my canopy and extends over the roof of the cab. I am deciding what size of aluminum.
It would need to support me walking on it ideally (80kg).
It would be a 1800x3600mm rectangle that is welded onto the canopy for 2400mm from one end, leaving the 1200mm overhanging the cabin. There will be 8 cross supports including the ends. Options are all in box section:
- 32 x 32 in 2 and 3mm
- 40 x 40 in 2 and 3mm
- 50 x 50 in 2,3 and 5mm.
if needed, I can add a central support.