Concrete Floor U Value. Uvalues of typical building methods Uvalues (overall coefficient of heat transmission) indicate the heat flow through materials the higher the figure the higher the heat loss While the values do vary for each particular material and method of construction the following table gives general figures for some common modes of construction.
Evolution Of Building Elements from Evolution of Building Elements
The Uvalue of an insulated suspended floor can be calculated using U = 1 / [(1/U 0) – 02 + R f] where U 0 is the Uvalue U.
A Quick and Easy Guide to UValues
8 Uvalues for roofs 21 9Uvalues for floors 23 91 Slabonground floor (groundbearing floor slabs) 23 92 Suspended floors 24 921 Suspended timber floor 25 922 Suspended beamandblock floor 25 923 Concrete beam floor with polystyrene between the beams or below the beams or both 25 924 Solid suspended floor – precast concrete planks 25 File Size 153KBPage Count 44.
Typical U values of building construction methods and materials
Uvalue requirement Floor 013 W/m²K Uvalue requirement Roof 013 W/m²K Uvalue requirement Windows (whole window Uvalue) 14 W/m²K Uvalue requirement Opaque doors 10 W/m²K Uvalue requirement Semi glazed doors 12 W/m²K UValue Calculator There are a few good uvalue calculators online that if you are short on time are worth checking out.
Evolution Of Building Elements
Part 6.C Uvalues of ground floors and basements
concrete.org.uk U Values
BRE Conventions for Uvaluecalculations
The Uvalue is the measure of heat transmittance through a material and the lower the U value the less heat is transmitted through a construction ie the better the insulation quality For concrete the kvalue depends on its bulk density and the moisture content in service (CIBSE guide Table A31 1980).
