w = 998.2
= 2.45
a = 3.45
P
P
= 3.45 C
K
(Ta + 273)
Ta
17.27TaC
es = 6.108 exp
237.3 + T C
a
Tac = air temp (oC); P = surface level pressure in
kPa; RH = relative humidity in %
ea =
=
=
ra =
RH
es
100
CpP
=
0.001013P
= 0.0006664 P
( M v M a ) 2.45
Practice questions for Midterm 2.
1) Find the critical depth in a trapezoidal channel having a bottom width of 6 m and 2:1 side
slops. The channel is lined with concrete and the channel slope is 1%. The flow rate is 80
m^3/s. Assuming the flow is critical
Homework Assignment 5
CE 3160, Spring 2013
Bohrer/Mouser
Due 04/15/2013
1. (after prob. 7.2): A 500-mm diameter concrete drainage culvert (n=0.012) is to be placed
under a roadway. During the design storm, it is expected that the water will pond behind th
CE 3160 Water Resources Engineering
08/29/2016
Chapter 2 - Headloss
Headloss
In reality, pipes are not smooth, and we have a loss in total energy as a result of uid energy
being transferred to the pipe system in the form of heat. These energy transfers ar
Quiz 3
Name
The city of Cleveland, OH has decided to turn 1000 m2 public area of a park (80% vegetation
cover, by oak trees) on soil group A into a paved parking lot.
a) What is the intensity (i) of the 10-year 2-hour precipitation event in Cleveland?
b)
Quiz #2 - Solutions
1) What would be the design capacity of the service reservoir to a new neighborhood,
designed as 1-2 family dwellings with yards of 10 ft (3 m) length between each house
(see table 3.5 for NFF). The neighborhood is planned for 5000 peo
Homework 3 Due Friday 2/22
Calculate the NFF requirements (in L/min) for a neighborhood of 3-story, Joisted masonry
apartment buildings. The floor area of each floor in these buildings is 400 m^2. The buildings are
separated by large lawns so that the (Ex
Homework 3 Due Friday 2/22
Calculate the NFF requirements (in L/min) for a neighborhood of 3-story, Joisted masonry
apartment buildings. The floor area of each floor in these buildings is 400 m^2. The buildings are
separated by large lawns so that the (Ex
Homework Assignment 2
CE 3160, Spring 2013
Bohrer/Mouser
Due 01/30/2013
1. (after prob. 2.6): Water at 20C flows at a velocity of 2 m/s in a 200-mm diameter horizontal
ductile-iron pipe.
a) Estimate the friction factor in the pipe, and state whether the p
Homework Assignment 1
CE 3160, Spring 2013
Bohrer/Mouser
Due 01/16/2013
1. (after prob. 2.1): Water at 20C is flowing in a 100-mm diameter pipe at an average velocity of
2.4 m/s. If the diameter of the pipe is suddenly expanded to 150 mm, what is the new
Calculating Head Loss and Friction in Closed Condiuts
Method
DarcyWeisbach
Description
hf=f(LV2)/(D2g)
Friction occurs from shear stress along fluidsolid surfaces that depends on material
roughness/shape, fluid characteristics, and