Answer to Question #246603 in Electrical Engineering for Aaron

Question

Using the CPA, the Deepwater Co. was able to determine that the expected completion time for the construction of a racing yacht was 1 year 9 months and the project variance was 4 months. Find the probability that the project would be completed in (a) 17 months (b) 20months (hint: state your assumptions clearly) 

Answer 1

The value of the wastewater flow used for sewer design is the daily peak flow. This can be estimated as follows: q = k1 k2 Pw / 86 400 (2.1) where q = daily peak flow, l/s k1 = peak factor ( = daily peak flow divided by average daily flow) k2 = return factor ( = wastewater flow divided by water consumption) P = population served by length of sewer under consideration w = average water consumption, litres per person per day and 86 400 is the number of seconds in a day. A suitable design value for k1 for simplified sewerage is 1.8 and k2 may be taken as 0.85. Thus equation 2.1 becomes: q = 1.8 × 10 -5 Pw