R Value Of 8 Poured Concrete Wall

To obtain a wall or ceiling assembly r value you must add the r values of the individual components together.

R value of 8 poured concrete wall.

0 13 0 64 30. Concrete sand gravel aggregate. Concrete block 4 inch 0 80 concrete block 8 inch 1 11 concrete block 12 inch 1 28 brick 4 inch common 0 80 brick 4 inch face 0 44 poured concrete 0 08 soft wood lumber 1 25 2 inch nominal 1 inch 1 88 2 x 4 3 inch 4 38 2 x 6 5 inch 6 88 cedar logs and lumber 1 33 sheathing materials plywood 1 25. Poured concrete foundations provide a high level of strength and durability and can last for decades.

Eps block forms poured in place with concrete block walls 1 7 8 thick 15 2 15 7 103 7. 1 25 2 nominal 1 1 2 1 88 2x4 3 1 2 4 38 2x6 5 1 2 6 88. Poured concrete walls are 8 10 inches thick and available with surface patterns like brick which provides a finished appearance. R value r value of 8 20cm concrete block 1 11 r value of 12 30cm concrete block 1 28 r value of 8 20cm poured concrete 0 64 r value of 4 10cm brick 0 80 r value of 1 3cm sheetrock 0 45 r value of 1 3cm sheathing 1 31 for comparison.

2 x 4 wood stud wall 16 o c r 11 batts 1 2. The r value of an uninsulated 8 inch thick basement wall built using normal weight concrete is 1 35 based on data from the 1993 american society of heating refrigeration and air conditioning engineers handbook. Advantages of poured concrete foundation. By doubling the thickness of the wall to 16 inches the r value only increases by 0 50.

For instance if you have a material with an r value of 12 attached to another material with an r value of 3 then both materials combined have an r value of 15. Cedar logs and lumber. 8 thick concrete slab or foundation wall has an r value of about 1 04 30 while lightweight aggregate filled 8 thick concrete has an r value of about 2 18 30. A wall s thermal resistance or its r value is its ability to slow the transfer of heat from one side to the other.

The last step is to pour concrete into the forms. R value of single pane glass 0 91. Typical residential weight concrete 8 wall r 2 5. As we said before the r value measures the thermal resistance of a material.