Questions
list the procedure to carry an experiment to find the the dynamic viscosity and kinematic viscosity...

list the procedure to carry an experiment to find the the dynamic viscosity and kinematic viscosity of fluid. please show the formula to find the dynamic viscosity and kinematic viscosity.

In: Civil Engineering

1. Triangulation is a technique used in estimating where the results of three estimating techniques are...

1. Triangulation is a technique used in estimating where the results of three estimating techniques are averaged or compared to improve the overall estimate based on a single method.

True

False

2. Quality is directly impacted by the balance achieved in the triple constraint.

True

False

3. Which of the following is NOT a knowledge area for project managers as specified in your text

a.

Time Management

b.

Cost Management

c.

Risk Management

d.

Skills Management

In: Civil Engineering

A simply supported beam of 10m span carries a uniformly distributed load of 50kN/m spread over...

A simply supported beam of 10m span carries a uniformly distributed load of 50kN/m spread over 5m from the left support and a 5kN concentrated load on its center . Its base is 250mm while deep is 500mm. Calculate the maximum deflection in mm. E = 2.0x10^5 N/mm2. Use the area moment method

In: Civil Engineering

A reverse osmosis membrane has a water permeation coefficient of 2 x 10-5 cm3/(cm2-sec-atm). It is...

A reverse osmosis membrane has a water permeation coefficient of 2 x 10-5 cm3/(cm2-sec-atm). It is used to treat a brackish water stream at 25 0C that contains 5,000 mg/L of salt (NaCl).

Question 1: Compute the osmotic pressure of the brackish feed stream

Question 2 – If the feed pressure is 27.2 Atm and the membrane area is 5 m2, what is the permeate flow rate.

In: Civil Engineering

1)Breifly discuss the mechanism of inflitration and factors wich affect the infiltration capicity over an area...

1)Breifly discuss the mechanism of inflitration and factors wich affect the infiltration capicity over an area ?

In: Civil Engineering

How to model a stormwater management area from a real-world problem to a mathematical model?

How to model a stormwater management area from a real-world problem to a mathematical model?

In: Civil Engineering

What parties to the building design and construction process—in addition to architects, mechanical engineers, and electrical...

What parties to the building design and construction process—in addition to architects, mechanical engineers, and electrical engineers—will play a substantive role in establishing the success of fire protection systems? For each party that is identified, briefly outline the role they can/should play.

In: Civil Engineering

The population from 1975 to 2015 are given below Year 1980 1995 2010 2020 Population In...

The population from 1975 to 2015 are given below

Year

1980

1995

2010

2020

Population In 1000s

10

20

32

44

  1. Use the data given in the table to draw the population – time relation in X-Y graph
  2. Use the Graphical extension Method to find the population in 2050
  3. According to the plotted graph, use only one method (Geometric Increase method or Arithmetic Increase method) to find the population in 2050 (Explain why you select this method)
  4. Use the estimated population in 2050 to design the main sewer pipe running 0.6 times full at maximum discharge. The water supplied from the water works to the town is at a rate of 200 LPCD. The manning’s n = 0.015 for the pipe material and permissible slope is 1 ‰. Variation of n with depth may be neglected. Check for minimum and maximum velocity assuming that the groundwater level is lower than the sewer pipe level.

In: Civil Engineering

Green building certification: Your client is not convinced to go for any green building certification. She/he...

Green building certification:

Your client is not convinced to go for any green building certification. She/he believes that buyers will not pay more for green buildings. He's asked for your opinion on this matter. What would your advice be?

In: Civil Engineering

You are the water supply manager for an organization that is contracted to supply water to...

You are the water supply manager for an organization that is contracted to supply water to a village with
population 3500 people. The water sources is a river and a pump is used to fill a 10000L tank. The turbidity
of the water is 4.1 NTU, therefore the manger has to determine the most appropriate amounts (mass) and
concentration of chlorine based water treatment chemical and the available chemical is HTH with 60%
chlorine
a) Work out how many grams of HTH you will require to add to one litre of water to a 1% chlorine
HTH solution.
b) You have four buckets, each containing 15 litres of water and added the following volumes of 1%
chlorine HTH solution.
1.0ml to bucket 1
1.5ml to bucket 2
2.5ml to bucket 3
4.0 ml to bucket 4
You wait for 30 minutes and measure the amount of residual chlorine that is in the water and get the
following results
0.0mg/l in bucket 1
0.13mg/l in bucket 2
0.35 mg/l in bucket 3
0.68 mg/l in bucket 4
Based on the Environmental Engineering judgement select the most appropriate chlorine dosage and
bucket and calculate the amount of 1% chorine HTH you will apply to the 10000L tank?
c. How much water will you treat per day if the water consumption is 90l/c/day and distribution losses
are 20%?
d. How much HTH in grams that must be applied in the 10000L tank per month?
e. Calculate the dosage in grams per minute of water purifying chemical, containing 20% (chlorine
based) active ingredients by mass, that will be required to treat a water supply system for a village
of 1500 people, given that water consumption per capita is 80L/day. The pumps and treatment
system are operated for 8 hours per day, required initial maximum chlorine concentration in treated
water at the plant is 4mg/L in the distribution network is 2mg/L. The water loses during distribution
are 15%.
f. After checking the chlorine levels in the village, one area out of 5 was found to have less than 2mg/L
of chlorine, what can you do to increase the chlorine levels for this particular area?

In: Civil Engineering

Give three advantages and three disadvantages of source separation of waste for recycling. [12]marks

Give three advantages and three disadvantages of source separation of waste for recycling. [12]marks

In: Civil Engineering

a) Determine the modulus of elasticity for a masonry prism made of 4 inc nominal clay...

a) Determine the modulus of elasticity for a masonry prism made of 4 inc nominal clay brick having compressive strength of 8250 psi and type S mortar.

b) ) Determine the modulus of elasticity for a masonry prism made of Concrete masonry units compressive strength of 4050 psi and type N mortar.

c) What is modulus of rupture of masonry flexural tensile stress normal to bed joints in running bond with solid units and PCL type M mortar.

d) An engineer type of brick is used in two wythe wall with a standard CMU both laid in mortar bed joints in their stretcher position, mortar joint thickness is 3/8-in. Wall designed for composite action a)what is the allowable shear stress for a mortared collar joints according to MSJC code b) if it was grouted collar joints then what is the allowable shear stress according to MSJC code.

In: Civil Engineering

Cut Tape and Add Tape measure instruments are less desirable for accurate field survey usage primarily...

Cut Tape and Add Tape measure instruments are less desirable for accurate field survey usage primarily due to which of the following?

A specific reading must be "cut" from the final measurement.

A specific reading must be "added" to the final measurement.

They lead to many serious measurement blunders.
Devices are cheaper.

In: Civil Engineering

1. a map having a scale of 1 in.= 100 feet is equivalent to a mapping...

1. a map having a scale of 1 in.= 100 feet is equivalent to a mapping ratio of 1:10000
a. true
b. false

2. Digital contouring systems generally make two assumptions concurning TIN models: (1) the surface area of any triangle is a plane and (2) all triangles sides have a constant slope.
a. true
b. false

2. the law os sines related two sides and the included angle of a triangle to the lengths of the sides opposite the angle.
a. true
b. false




In: Civil Engineering

Explain workforce demographics and the key managerial skills for dealing with workforce diversity. What are two...

  1. Explain workforce demographics and the key managerial skills for dealing with workforce diversity. What are two trends in workforce demographics?
  2. What are the two main means of measuring personality? Discuss. please types the answers (don't use your handwritting. Thank you.

In: Civil Engineering