The inner surface of the roof is maintained at 15 c.
													
																	The roof of a house consists of a 22 cm thick concrete slab. 
									
	
		
	
																	A 4 or 6 inch layer of gravel lies beneath the slab. 
																	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. 
																	Design the roof slab beam and column of house given in 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 c that is 15 m wide and 20 m long. 
																	The roof of a house consists of a 22 cm thick concrete slab k 2 w m k that is 15 m wide and 20m long 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 m 2 k the inner surface of the roof is maintained at 15 c. 
																	Around the edge of the slab the concrete forms a beam that is perhaps 2 feet deep. 
																	The ambient air is reported to be at 10 c while the night. 
															
													
									
	
		
	
																	Slabs s1 and s2 to be designed. 
																	The convection heat transfer coefficients on the inner and outer surfaces of the roof are 5 and 12 w m2 c respectively. 
																	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. 
																	On a clear winter night the. 
															
													
									
	
		
	
																	Concrete compressive strength fc 3 ksi. 
																	On a clear winter night the ambient air is reported to be at 10Âșc while the night sky temperature is 100k. 
																	The roof of a house consists of a 22 cm thick concrete slab k 2 w m k that is 15 m wide and 20 m long the emissivity of the outer surface of the 1 roof is 0 9 and the convection heat transfer coefficient on that surface is estimated to be 15 w m 2 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. 
															
													
									
	
		
	
																	On a clear winter night the ambient air is reported to be at 10 c while the night sky temperature is 100 k. 
																	On a clear winter night. 
																	The convection heat transfer coefficients on the inner and outer surfaces of the roof are 5 and 12 w m2k respectively. 
																	On a clear winter night the ambient air is reported to be at 10 c while the night sky temperature is 100 k. 
															
													
									
	
		
	
																	2 thick brick tile. 
																	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 22 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 outer surfaces of the roof are 5 and 12 w m 2 c respectively. 
															
													
									
	
		
	
																	The convection heat transfer coefficients on the inner and outer surfaces of the roof are 5 and l w m 2 k respectively. 
																	A 4 millimeter sheet of plastic lies between the concrete and the gravel to keep moisture out. 
																	The roof of a house consists of 15 cm thick concrete slab k 2 w mk that is 15 m wide and 20 m long. 
																	The roof of a house consists of a 15 cm thick concrete slab k 2 w m c that is 15 m wide and 20 m long. 
															
													
									
	
		
	
																	Live load 40 psf figure 1.