If the same house sits on a basement insulated with 4" of extruded polystyrene, smooth skin surface with a density of 35 kg/m3, extending down from grade 1500mm, calculate the annual heating cost of the basement.

The owner wants to install radiant floor heating on the main floor of the house. Assuming the heat will flow both upwards into the first-floor living space and downwards into the basement through the basement ceiling, how many watts will the system require to keep the floor and ceiling temperatures at 22oC? Assume only radiant heat transfer. The first floor is covered in red tile, and the basement ceiling is a light cream-colored gypsum board

Determine the magnitudes of the force C, if T = 10 KN, which, along with the other three forces shown, act on the bridge-truss joint. Answer: 16 kN -T C 20 3 kN NE 40 T 8 kN 411x