Hello,
I am in the process of designing and figuring out how to extend my workshop by an additional 7.2x8.4m.
The problem is that the current garage has about 1.5m from the slab to the ground where I will build the extension. Because of this, I have considered casting pillars and building a steel frame that rests on them. Hopefully, there is bedrock quite shallow under the soil.
I can get HEA320 beams at a very good price, so the frame will probably be made of these. My idea was to build a frame around with two intersecting beams in the middle of the frame supported by a pillar in the middle of this "cross." This would then form 4 squares that are cc 3.6x4.2m. I prefer welding over nailing
Now comes the tricky part, what is the best way to create a stable slab/floor that can have tiles laid on it? (I have granite ceramic tiles in the existing one and it holds up very well, even when I rolled in a 2.5-ton milling machine with a pallet jack).
Some options I've considered:
1. Create a joist system with 45x195 joists at cc60 with a span of 3.6m (-300mm for HEA), nail-glue the sheathing, wrap in plastic, and then cast with Cellular Concrete/EP cement up to 50mm above the beams (total thickness of about 150mm).
2. Same as above but with reinforcement welded around the beams, double layers? and then cast on this. Perhaps place foam plastic underneath, or insulate with mineral wool under the joist system?
3. Build a wooden joist system at cc30 with 45x225, nail-glue the sheathing, glue floor gypsum and then lay tiles on it. Can it withstand rolling in, for example, a 2-2.5 ton milling machine? I know wooden constructions can be very strong, the question is only if it can manage without flexing?
Very grateful for any advice!
Best regards,
Simon
I am in the process of designing and figuring out how to extend my workshop by an additional 7.2x8.4m.
The problem is that the current garage has about 1.5m from the slab to the ground where I will build the extension. Because of this, I have considered casting pillars and building a steel frame that rests on them. Hopefully, there is bedrock quite shallow under the soil.
I can get HEA320 beams at a very good price, so the frame will probably be made of these. My idea was to build a frame around with two intersecting beams in the middle of the frame supported by a pillar in the middle of this "cross." This would then form 4 squares that are cc 3.6x4.2m. I prefer welding over nailing
Now comes the tricky part, what is the best way to create a stable slab/floor that can have tiles laid on it? (I have granite ceramic tiles in the existing one and it holds up very well, even when I rolled in a 2.5-ton milling machine with a pallet jack).
Some options I've considered:
1. Create a joist system with 45x195 joists at cc60 with a span of 3.6m (-300mm for HEA), nail-glue the sheathing, wrap in plastic, and then cast with Cellular Concrete/EP cement up to 50mm above the beams (total thickness of about 150mm).
2. Same as above but with reinforcement welded around the beams, double layers? and then cast on this. Perhaps place foam plastic underneath, or insulate with mineral wool under the joist system?
3. Build a wooden joist system at cc30 with 45x225, nail-glue the sheathing, glue floor gypsum and then lay tiles on it. Can it withstand rolling in, for example, a 2-2.5 ton milling machine? I know wooden constructions can be very strong, the question is only if it can manage without flexing?
Very grateful for any advice!
Best regards,
Simon
After some googling and pondering, I found the solution to the problem myself.
It will have to be a steel frame and casting with planja combideck or equivalent, and possibly mineral wool on sparse paneling under the slab.
It will have to be a steel frame and casting with planja combideck or equivalent, and possibly mineral wool on sparse paneling under the slab.