There are minimum r value requirements for these parts of your home specified under the building code of australia bca and dictated to by the state and climate zone in which you live.
Thermal properties of concrete walls.
Thermal mass properties the thickness of the material and the method of construction will change the r values of your walls and roof.
Wall thermal mass such as that present in concrete masonry construction tends to decrease both heating and cooling loads in a given building thus saving energy.
Typical residential weight concrete 8 wall r 2 5.
Thermal mass is defined as.
Murray holladay rd suite 102.
Outer walls and partition walls.
As for the furring used for interior insulation the thermal resistance of the concrete masonry webs and any grouted cores should be accounted for when determining the thermal performance of the wall see tek 6 2c ref.
3 for tabulated r values of walls with core insulation.
0 13 0 64 30.
The compressive strength of 500 grade is 2 3 0 mpa.
Guide to thermal properties of concrete and masonry systems.
And the thermal conductivity is 0 12 w m k the same with aerated concrete.
When using core insulation the insulation should occupy all.
The porous concrete made by gas forming and autoclaving cement foam agent and water.
Concrete sand gravel aggregate.
Its insulation value comes primarily from using it in thick slabs and hence isolating the insulated space from thermal fluxes in the environment.
The absorption and storage of significant amounts of heat in a building or in walls of a building ref.
Properties of walls using lightweight concrete and lightweight concrete masonry units 11 0 introduction 11 1 thermal resistance and energy conservation 11 2 fire resistance 11 3 acoustical resistance 11 4 enclosure properties april 2007 expanded shale clay slate institute escsi 2225 e.
Common small sized concrete.
It is an important asset for designers who need to cut heating and air conditioning costs associated with hvac systems and still keep building occupants comfortable.
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.
