In Example 8.5, a culvert diameter of l. 5 m may be required if this is the

Question:

In Example 8.5, a culvert diameter of l. 5 m may be required if this is the next largest standard size . As the design engineer, you would like to use a I. 25 m diameter culvert to save your client money. Would this smaller diameter culvert meet the design requirements if:
(a) A well-rounded entrance was used on the 1.25-m pipe?
(b) A well-rounded entrance was used along with increasing the pipe slope to 1.0 percent while maintaining the maximum available headwater at 3.2 m?