11-29-2010, 07:13 AM
These are the calculations of the U-value for the following construction:
15mm plasterboard and skim
100mm lightweight block
100mm cavity filled with mineral wool
100m brickwork
0.13 + 0.015/0.50 + 0.100/0.51 +0.100/0.15 +0.100/0.84
=0.13 + 0.03 + 0.196 + 0.769 + 0.119
= 1.244 RT
U-value = 1/1.224 = 0.804 W/ m2 K
You asked for it xD
15mm plasterboard and skim
100mm lightweight block
100mm cavity filled with mineral wool
100m brickwork
0.13 + 0.015/0.50 + 0.100/0.51 +0.100/0.15 +0.100/0.84
=0.13 + 0.03 + 0.196 + 0.769 + 0.119
= 1.244 RT
U-value = 1/1.224 = 0.804 W/ m2 K
You asked for it xD