Calculate the overall transmittance for the roof shown below, doesthis roof meet Bahrain's regulations, 0.3 W/m².0? What can bedone to enhance the performance of this roof?Concrete layer 50 mm. Thick.Polyurethane 35 mm. thickHollow core slab 150 mm. thick.k=1.45 W/m. Ck=0.024 W/ m."C= 1.25W/m:0Surfaceresistance (Keat flow)RRRaiDirection of FlowWall m²KWRoof m²KW0.1210.1660.0590.059for cavity between 5-20mm 0.1.1- if cavity >20mm 0.18 Calculate the overall transmittance for the wall shown below, doesthis wall meet Bahrain's regulations 0.57 W/m².C12 mm outside plaster, k 0.75200 mm Hollow blocks, k 0.88545 mm polystyrene, k 0.0312 mm inside plaster, k 0.75Surfaceresistance (Heat flow)RuRairDirection of FlowWall m²KW0.121-0.059-Roof m²KW:0.166:0:059for cavity between 5-20mm 0.11-if cavity >20mm 0.18

Answered: Calculate the overall transmittance for…

Calculate the overall transmittance for the roof shown below; does this roof meet Bahrain's regulations, 0.3 W/m².0? What can be done to enhance the performance of this roof?

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Question

Calculate the overall transmittance for the roof shown below, does
this roof meet Bahrain's regulations, 0.3 W/m².0? What can be
done to enhance the performance of this roof?
Concrete layer 50 mm. Thick.
Polyurethane 35 mm. thick
Hollow core slab 150 mm. thick.
k=1.45 W/m. C
k=0.024 W/ m."C
= 1.25W/m:0
Surface
resistance (Keat flow)
R
R
Rai
Direction of Flow
Wall m²KW
Roof m²KW
0.121
0.166
0.059
0.059
for cavity between 5-20mm 0.1.1- if cavity >20mm 0.18

Calculate the overall transmittance for the wall shown below, does
this wall meet Bahrain's regulations 0.57 W/m².C
12 mm outside plaster, k 0.75
200 mm Hollow blocks, k 0.885
45 mm polystyrene, k 0.03
12 mm inside plaster, k 0.75
Surface
resistance (Heat flow)
Ru
Rair
Direction of Flow
Wall m²KW
0.121
-0.059-
Roof m²KW
:0.166
:0:059
for cavity between 5-20mm 0.11-if cavity >20mm 0.18

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