green roof is to be designed for rooftop that is 30ft x 100ft. On the rooftop 60% needs t maintenance access and equipment. The green roof will have a soil media with 20% p ainage layer (25% porosity), and should be limited to a 0.5-in ponding depth. Based on alysis, the maximum soil depth allowed for the design is 1 foot. a) Determine the WQv needed if the 90% rainfall number is P = 1.2-in b) Determine the minimum soil media depth needed to meet the WQv. c) Determine your soil media depth. d) Based on the selected depth, is the roof design extensive or intensive? e) How much storage is provided by the design? f) Does the green roof capture the required WQv? If not, how much of the WQv ne by another practice.
green roof is to be designed for rooftop that is 30ft x 100ft. On the rooftop 60% needs t maintenance access and equipment. The green roof will have a soil media with 20% p ainage layer (25% porosity), and should be limited to a 0.5-in ponding depth. Based on alysis, the maximum soil depth allowed for the design is 1 foot. a) Determine the WQv needed if the 90% rainfall number is P = 1.2-in b) Determine the minimum soil media depth needed to meet the WQv. c) Determine your soil media depth. d) Based on the selected depth, is the roof design extensive or intensive? e) How much storage is provided by the design? f) Does the green roof capture the required WQv? If not, how much of the WQv ne by another practice.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Green Roof Design
A green roof is to be designed for rooftop that is 30ft x 10oft. On the rooftop 60% needs to be reserved
for maintenance access and equipment. The green roof will have a soil media with 20% porosity, a 2-in
drainage layer (25% porosity), and should be limited to a 0.5-in ponding depth. Based on the structural
analysis, the maximum soil depth allowed for the design is 1 foot.
a) Determine the Woy needed if the 90% rainfall number is P = 1.2-in|
b) Determine the minimum soil media depth needed to meet the WOv.
c) Determine your soil media depth.
d) Based on the selected depth, is the roof design extensive or intensive?
e) How much storage is provided by the design?
f) Does the green roof capture the required WOv? If not, how much of the WOv needs to be treat
by another practice.
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