Floor Slab U Value Calculator

Building width m building length m building area m2 building perimeter m. The u value calculator covers all the main ways of building walls flat roofs pitched roofs and floors using kingspan insulation products. There are a few good u value calculators online that if you are short on time are worth.

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Slab On Ground U Value Calculation

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U value calculator version 3 70.

Floor slab u value calculator.

Sign up to jablite updates. U value requirement windows whole window u value 1 4 w m k. For a 6 inch slab r value would be between 0 6 and 1 2. However the following expression can be used to compute r this equation is provided by astm c 168.

This simple u value calculator can help you quickly check your designs or plans to see if they are likely to achieve bs en iso 6946 2017 compliance. Recent changes to the building regulations have reduced the stipulated u value for floors from 0 45 to 0 25 w m k. A simplified method of calculating the u value of an uninsulated floor has been described in bre information paper ip 3 90. Follow us on social to keep in touch with our latest tweets posts and information about eps and the insulation industry.

Welcome to the jablite u value calculator for floors walls and inverted roofs. Calculation of thermal transmittances. A reasonable r value for a normal concrete slab can be estimated using an r value the thermal resistance per inch of thickness between 0 1 and 0 2 and multiplying it times the slab thickness. U value requirement roof 0 13 w m k.

U value requirement semi glazed doors 1 2 w m k. The quick free and easy way to find out the insulation thickness and the u value you need for your building project. Depending on the use of the building the slab can then be finished ready for use or receive a screed suitable for a floor finish. Calculating the inverse of that 1 r would give you a u factor in the range of 1 67 to 0 83.

A reasonable r value for a normal concrete slab can be estimated using an r value the thermal resistance per inch of thickness between 0 1 and 0 2 and multiplying it times the slab thickness. If the insulation is going below the slab the damp proof membrane dpm is laid next followed by the insulation a polythene separating layer and the concrete slab. U value requirement opaque doors 1 0 w m k. U value requirement floor 0 13 w m k.

The formula for calculation of a ground floor u value is given in cibse guide a3 and is very complicated. A useful tool for designers architects and the general public to quickly calculate the u values of different elements within a building.

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