Nearly all types of plywood panels can be used in concrete forming from common roof and wall sheathing to sanded panels.
Homemade plywood concrete wall forms.
If they will be reused then use treated lumber.
You want your wood to be as tall as your planned wall but to form the width the length of the wall using at least 4 foot sections.
The plywood needs to be of forming quality.
The 2 x 4 s should be no 2 kiln dried pine simply because it is cheap easy to work with and holds nails very well.
If i make the ties close enough together does it matter.
To make the wall as strong as possible pour the concrete in layers no higher than 20 inches working from 1 end of the wall to the other.
Then pour your concrete inside the form using a chute or hose attached to the mixer.
Im looking at a job that has a 16 ft tall by 90 ft wall and a 20 ft tall by 50 ft wall.
2 x 4 s and 3 4 forming plywood works best.
Cut your plywood accordingly.
Worried about possibly blowing the forms and 1 inch formboard is hard to get ahold of.
A do it yourselfer can pour concrete between 2 by 4 forms when installing a new sidewalk or patio but for best results pretreat the wood in the same way the pros do.
To form a concrete wall first set up plywood boards on either side of your concrete footer and attach them together with wire.
The form will be lightweight and strong.
Plan out how much 3 4 inch plywood you will need to form each side of the wall.
Apa plyform panels however are specifically designed to withstand the wear and tear of repeated concrete pours as well as to provide a smoother and more consistent finish to the concrete s surface.