One evening at 6 pm the slab is observed to be at a uniform temperature of 18 c.
The roof of a house consists of a 3 cm thick concrete slab.
The inner surface of the roof is maintained at 15 c.
Slabs s1 and s2 to be designed.
The emissivity of the outer surface of the roof is 0 9 and the convection heat transfer coefficient on that surface is estimated to be 15 w m2 k.
1 conduction sheet 3 1 the roof of a house consists of a 3 cm thick concrete slab k 2 w m c that is 15 m wide and 20 m long.
The average ambient air and the night sky temperatures for the entire night are predicted to be 6 c and 260 k respectively.
The temperature of the air near surface of the roof is 10 o c convection and the temperature of the night sky for radiation calculations is 100 k.
The roof of a house consists of a 15 cm thick concrete slab k 2 w m c 15 m wide and 20 m long.
The roof of a house consists of a 15 cm thick concrete slab k 1 4 w m k and α 0 69 10 6 m 2 s that is 18 m wide and 32 m long.
The roof of a house consists of a 3 cm thick concrete slab k 2 w m κ that is 15 m wide and 20 m long.
The inner surface of the roof is maintained at 15 c.
The roof of a house consists of a 22 cm thick concrete slab k 2 w m k that is 16 8 m wide and 20 m long.
On a clear winter night the ambient air is reported to be at 10 c while the night sky temperature is 200 k.
The convection heat transfer coefficients on the inner and outer surfaces of the roof are 5 and 12 w m2 c.
The convection heat transfer coefficients on the inner surface is 5 and 12 w m2 c on outer surface.
The convection heat transfer coefficients on the inner and outer surfaces of the roof are 5 and 12 w m2 c respectively.
On a clear winter night the ambient air is reported to be at 10 c while the night sky temperature is 100 k.
The roof of a house consists of a 3 cm thick concrete slab k 2 w m c that is 15 m wide and 20 m long.
Concrete compressive strength fc 3 ksi.
Live load 40 psf figure 1.
On a clear winter night the ambient air is reported to be at 10 c while the night sky temperature is 100 k.
The roof of a house consists of a 15 cm thick concrete slab k 2 w m k that is 15 m wide and 20 m long the convection heat transfer coefficients on the inner and outersurfaces of the roof are 5 and 12 w m 2 k respectively.
Steel yield strength fy 40 ksi.
Design the roof slab beam and column of house given in figure 1.
