Question

roughness of uncoated ductile iron piping system.

Answer #1

Dear,

- From the above table we can get roughness of different materials used in piping system.
- As reffered above table, the roughness of uncoated ductile iron
piping system is
- 2.4 x ( in meter)
- 8 x (in feet)

- If you need any other details please elborate your question.

A 6.8-km cast-iron
(new, uncoated) pipeline conveys 285 L/s of water at
10oC. If the pipe diameter is 32 cm, determine the
friction head loss (in m) calculated using the Hazen-Williams
equation. Use typical values for pipe roughness, as needed.
Ch = 130 for new ,
uncoated pipeline
Select one:
a. 99.53
b. 552.8
c. 225.2
d. 146.1

1. The primary difference, in terms of processing, between gray
iron and ductile iron is that ductile iron has a very small
addition of Mg or Ce added to generate nodules of graphite in the
microstructure
true or false? explain your answer

An engineer measured the Brinell hardness of 25 pieces of
ductile iron that were annealed. The resulting data were:
170, 167, 174, 179, 179, 187, 179, 183, 179, 156, 163, 156, 187,
156, 167, 156, 174, 170, 183, 179, 174, 179, 170, 159, 187
The engineer hypothesized that the mean Brinell hardness of all
such ductile iron pieces is greater than 170. Do the hypothesis
testing for the engineer.

An engineer measured the Brinell hardness of 25 pieces of
ductile iron that were subcritically annealed. The resulting data
were: 170 167 174 179 179 187 179 183 179 156 163 156 187 156 167
156 174 170 183 179 174 179 170 159 187
The engineer hypothesized that the mean Brinell hardness of all
such ductile iron pieces is greater than 165. The engineer analyzed
his data and calculated the following: The average Brinell hardness
of the n =...

An engineer measured the Brinell hardness of 25 pieces of
ductile iron that were subcritically annealed. The resulting data
were:
170 167 174 179 179 187 179 183 179 156 163 156 187 156 167 156
174 170 183 179 174 179 170 159 187
The engineer hypothesized that the mean Brinell hardness of all
such ductile iron pieces is greater than 165.
The engineer analyzed his data and calculated the following: The
average Brinell hardness of the n =...

In a chemical processing plant, liquid cyclohexane (p = 48.5
lbm/ft^3) flows through .a piping system (pump, piping, valves,
etc.) at a rate of 1200 gpm as it is being transported from one
process to the next. The pressure drop through the pipe system is
6.4 psi. The facility is automated and runs 24 h/day, 365
days/year. The cost of energy to operate the pump in the system is
$0.12/kWh. Annual maintenance costs for the piping system are 3% of...

what are the methods to solve problems related to pipe networks and
piping system other that ms Excel and matlab

1. The following data were obtained from a Charpy impact test
for a ductile cast iron containing 2.55 wt% Si. Plot the data and
find the ductile to brittle transition temperature. What does this
transition temperature signify? Would you use this material in a
product that undergoes constant impact forces below 0oC?
Why or why not? Explain. Use graph supplied on next page.
TEST TEMPERATURE (oC)
IMPACT ENERGY (ft-lb)
-50
4
-20
4
0
6.4
8
8.8
14
12
20...

Provide an estimate of the interior diameter and the velocity of
flow in a new ductile iron pipe bitumen lined used to transport raw
water to a treatment plant. It is estimated that the head loss due
to friction in the pipe is 0.35%. The measured pressurized flow
rate in the pipe is 250l/s.

An elevated water reservoir (water level at 210 m) is to supply
a lower groundwater reservoir (water level at 138 m). The
reservoirs are connected by 800 m of 400 mm ductile cast pipe (C =
100) and 1200 m of 300 mm ductile cast-iron pipe (C = 100) in
series.
(a) What will be the discharge delivered from the upper reservoir
to the lower one?
(b) If the water demand increases by 50% in the future, determine
the required...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 9 minutes ago

asked 33 minutes ago

asked 53 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago