Alignment, braces for exterior wall

[Marta]

I have a question about straightening exterior walls in a stick-built construction.

I'm about to start my garage construction, it's an attached garage of 30m2. The foundation is ready, slab on grade with underfloor heating.

The question I have is: How do I keep the exterior walls plumb?

I've previously built sheds and houses with wood floor joists, where you can easily put temporary braces between walls and the joists with regular nails.

Here I have a slab on grade, which is tricky to nail into. I've also seen people anchor boards to the slab and attach braces to them. But I don't want to risk puncturing the underfloor heating pipes by drilling into the slab.

Is it possible to glue down boards with something like pl400, and can you remove them afterward? I would be very grateful if anyone has any suggestions.

 

[FredrikR]

Can't you support them from the outside?

 

[Gladh]

Can you drive a stake into the ground outside the slab and then attach your purlins to this?

- M

 

[Mikael_L]

Left wall support from its top plate diagonally down into the sill to the right wall and vice versa.

If the distances are long, it might have to go a little slanted down into the sill on the wall 90 degrees from the supported one.

I had a really large, about 2-3 ton stone lying on the ground a few meters away, where I attached a piece of timber with two decently sturdy screws, 5-6mm. Then I fastened a support there. If you're going to drill into granite, you'll probably need a hammer drill.

Some tips.

edit: uploaded a picture

 

[Marta]

Left wall supports you from its wall plate diagonally down into the sill on the right wall and vice versa.

If the distances are long, it might have to slope down into the sill on the wall 90 degrees from the one being supported.

I had a really large, like 2-3 tons stone lying on the ground a couple of meters away, where I attached a piece of wood with two decently sturdy screws, 5-6mm. Then I screwed a support there.
If you're going to drill into granite, you'll probably need a rotary hammer.

Some tips.

edit: uploaded a picture

Thanks for the answers! and the picture...

The dimensions of the garage are 4.8 *6.3 m, so the distances inside become quite long, sloping down into the sill might work in some places, but in the middle of the long wall, I probably won't reach; there, it will be necessary to hammer something into the ground to screw in.
Unfortunately, there's a big lack of stones in the surroundings, so that's not an option for me. A rotary hammer wouldn't have been a problem; there's no lack of machines in my place, although ideas are sometimes missing.

 

[Uffe_xx]

Take one or probably several pallets and place them on the slab, then place a rainwater barrel/oil drum on each pallet and fill with water. Your struts are easily nailed or screwed into the pallet.

 

[Ahlbom]

Isn't it silly to drill/mount in the slab? Maybe there's a tree nearby you can attach them to? Otherwise, go with Uffe's model with pallets

 

[FredrikR]

No one has suggested that they should be drilled into the slab.
Sharpen a piece of wood, drive it into the grass a bit, and nail the brace there - simple!

 

[Marta]

Thanks again, the pallet option was creative! We'll see what happens. Maybe I'll lay the plaster on pallets and nail them in, otherwise it might be driving pointed pieces of timber into the ground next to it.

// Marta

 

[Mikael_L]

If you proceed with the pallet option, you can secure it a bit extra with a "dubb."

Drill with a 4 or 5mm concrete drill through the lower plank of the pallet and only about 5-10mm into the concrete, then insert a 4.8 x 25mm wood screw (or the length that is suitable), which will give you a dubb that makes it impossible for the pallet to slide as long as there are a few hundred kg loaded on it.