Table 2: Physical properties of the elements of the ELT building envelope.

Element Quantity Orientation Length (m) Breadth (m) Thickness (m) R-value
Roof 1 - 19 19 - 1.11
Wall 4 W, E, N, S - - 0.5 1.28
Ceiling 1 - 16.18 16.18 - 1.11
- 1 W 2.32 1.74 - -
Door 1 E 2.32 1.74 - 2.17
- 1 NE 2.20 1.74 - -