This is a gentle reminder that you need to adhere to the time limit There are 80 minutes allotted for Section B, which starts running from the time you commence solving this question Within an urban development near the city of Bankstown, Sydney (Latitude:-33.917290 , Longitude: 151.035889) a roadway gutter transports water over a distance of 120m to pit A. The ARI adopted for the design is 50 years (or AFP = 1/T x 100 - 2%) Question B.1 Calculate the discharge from the catchment to pit A. Show the workings on the graph and tables you download from the BOM.
This is a gentle reminder that you need to adhere to the time limit There are 80 minutes allotted for Section B, which starts running from the time you
commence solving this question
Within an urban development near the city of Bankstown, Sydney (Latitude:-33.917290 , Longitude: 151.035889) a roadway gutter transports water
over a distance of 120m to pit A. The ARI adopted for the design is 50 years
(or AFP = 1/T x 100 - 2%)
Question B.1 Calculate the discharge from the catchment to pit A. Show the workings on the graph and tables you download from the BOM.
Hint: For entry to pit A full area coefficient - part area coefficient. Consider the time of concentration from the remote pavement to the gutter (this
includes the grassed verge and asphalt paving) - 2 minutes Provide IFD's or Rainfall intensity tables, which are used and show the working
on all tables, and graphs used.
Figure 2.docx
Question B.2. Provide an estimate of the roof and gutter time for the residential lots
Question B.3. Why is it important to take into consideration the part area effect when estimating the design flow using the rational method in Victoria
Sample formulas and Rainfall intensity tables you may find useful
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