ENVE4391/CE5391 Advanced Water Treatment
Homework #1
Due on February 19, 2016
1. Briefly answer: (a) What is the ratio of surface water to ground water in drinking water
supply in the United State? (b) What are primary and secondary standards for drinking
ENVE4391/CE5391 Advanced Water Treatment
Homework #3
Due on April 8, 2016
1. A batch adsorption study with PAC for organic removal with 1-L water sample Determine the
constants in Freundlich and Langmuir isotherm equations. The experimental data are given
HW#02 Assigned 02 /03 /2012 Due 02 /07/2012 Tuesday
Problem 1 (20 points) ACI Section 10.3.5 specifies indirectly the maximum amount of
reinforcement, A"max in terms of the strain in reinforcement at the time of beam failure. For the
cross-sections shown
CE4343 Design of Concrete Structures
HW#03
Due 03/08/2016 Tuesday
Problem 1. (50 points) A beam having a width, b of 18 in. and an effective depth, d of 27.5 in.,
as shown below, contains two #9 deformed reinforcing bars as the compression reinforcement,
CE4343 Design of Concrete Structures
HW#02 Due 02/18/2016 Thursday
Problem 1 (50 pts) The ﬁgure shown below shows a simply supported beam and the cross
section at midspan. The beam supports a uniform service (unfactored) dead load of 1.8 k/ft ,
which incl
CE4343 Design of Concrete Structures
HW#04
Due 03/10/2016 Thursday
Problems 1 through 3 (30 points each). Determine the design flexural strength M n . Use f'c =
4 ksi and fy = 60 ksi.
Problem 2
Problem 1
Problem 3
CE4343 Design of Concrete Structures
HW#0
HW#01 Due Tuesday 02/02/2016
CE4343
10. (5 pts) For Grade 60 reinforcement, what is the stress in the reinforcement, f; when the
strain of reinforcement 85 is 0.003?
a.
ﬁz—fg’ 11513431" 63 3. f} = 60 [CS
11. (5 pts) What is the maximum concrete compressiv
ENVE4391/CE5391 Advanced Water Treatment
Homework #2
Due on March 11, 2016
1. What are carbonaceous hardness and non-carbonaceous hardness? Give two mineral examples for
each hardness.
2. Water contains 38 mg/L of calcium ion, 10 mg/L magnesium, 120 mg/L
1W#02 Due Monday 09/14/2015
31343 43
Problem 1 (50 pts). For the cross—section of a beam shown below, determine the nominal
bending strength Mn , and the design bending strength ¢Mn using the rectangular stress block
concept discussed in the class (which
HW#03 Assigned Tuesday 02 /07/2012
Due Thursday 02/09/2012
Problem 1. (100 points). The simply-supported beam shown below supports a uniform service
(un factored) dead load, WD of 1.8 kips/ft and a uniform service (unfactored) live load, WL of 1.0
kips .
CE4343 Design of Concrete Structures
HW#02
Due 02/18/2016 Thursday
Problem 1 (50 pts) The figure shown below shows a simply supported beam and the cross
section at midspan. The beam supports a uniform service (unfactored) dead load of 1.8 k/ft ,
which inc