R Value Table Concrete Wall

Table 2 lists calculated u factors and r values of various thicknesses of concrete masonry walls for concrete densities of 85 to 135 lb ft 1 362 to 2 163 kg m with various core fills.

R value table concrete wall.

0 13 0 64 30. System description clear wall r value rcw whole wall r value rww rww rcw x 100 1. Typical residential weight concrete 8 wall r 2 5. The following table is in metric form.

When determining how much insulation you need don t guesstimate calculate. Tables of building material r values. There are many websites on the internet which have imperial building material r value numbers but not so many with metric r value numbers. R value measures how well certain building insulation materials can resist heat.

Click here to go to our calculator to understand the real r value of a ceiling system or wall system with gaps in the insulation. R values for wall systems no. Civil engineering and architecture r value and densities chart page 3 the following table was taken from the home energy website. Know exactly how much you need with our project calculators.

Thismethod of determining r values do not apply to dynamic mass walls such as the allwall system. Add the individual components and thenmultiply by 11 and divide by 5 per fsec. Concrete sand gravel aggregate. Table 3 shows the approximate percentage of grouted and ungrouted wall area for different vertical and horizontal grout spacings which can be used to.

By doubling the thickness of the wall to 16 inches the r value only increases by 0 50. 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. The r values for specific assemblies like doors and glazing in the table below are generalizations because they can vary significantly based on special materials that the manufacturer uses. The higher the r value the greater the insulation performance.

For instance using argon gas in a double pane insulating glass unit will dramatically improve the r value. 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. This is how the dynamic mass wallperforms in whole wall lab tests and in the constructed home. Insulation values forselected materials.