Exterior wall thickness depends on siding material.
How thick does a concrete wall need to be.
The recommended maximum is 12 inches.
Concrete thickness for flatwork such as slabs on grade and driveways a minimum thickness of four inches is required but increasing the thickness to five inches can add nearly 50 percent to the load bearing capacity.
For example to calculate the volume in cubic meters for a wall with a height of 2m width of 20cm and length of 4m you need to multiply 2 x 0 2 x 4 which equals 1 6 m 3 cubic meters.
To keep the house and the room from being sucked into the air during a tornado large footings that work like anchors are added to the walls to hold the room in place.
For example if you are pouring a retaining wall that will be 12 inches thick and will use wooden planks that are 1 1 2 inches thick for your forms you ll need to space the stakes about 15 inches apart 12 inches for the retaining wall plus two pieces of 1 1 2 inch thick wooden board.
In order for a concrete room to effectively resist high winds and flying debris most rooms built with precast concrete walls rely on 12 to 16 inch thick blocks.
Poured concrete foundation walls that are less than 8 feet tall and have soil outside that is 6 or 7 feet deep against the wall can often be 8 inches thick and function quite well.
As soon as you go higher or have greater depths of soil pushing against the wall you need to increase the thickness to 10 inches.
Standard 2 by 4 studs are 3 1 2 inches wide and drywall is 1 2 inch thick so interior walls are usually 4 1 2 inches thick.
For a wall made of concrete the calculation is practically the same.
Icf block comes in core sizes of 4 6 and 8 inches and the insulation is 2 5 inches per side.
Most of the icf houses i ve worked on were exterior and load bearing only.