Questions
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

A 50 m3/s is conveyed down a 5-m wide rectangular channel (n = 0.012) with a...

A 50 m3/s is conveyed down a 5-m wide rectangular channel (n = 0.012) with a slope
of 0.02 m/m. The channel transitions into a second channel with a slope of 0.0008 m/m. A
hydraulic jump occurs on the downstream channel. What is the downstream depth of the
second channel after the jump? What is the depth of the water before the jump? What is
the energy loss due to the jump? How long is the total distance of the hydraulic jump?

In: Civil Engineering

Prepare a comprehensive homework on polymer concretes and polymer impregnated concretes, their properties, standards and usage...

Prepare a comprehensive homework on polymer concretes and polymer impregnated concretes, their properties, standards and usage areas.

In: Civil Engineering

Is steel sustainable material or not,Why ? (150 words at least) Module:construction materials

Is steel sustainable material or not,Why ? (150 words at least)

Module:construction materials

In: Civil Engineering

Green Rating System Does your organization produce a corporate or organizational sustainability report? If yes, locate...

Green Rating System

Does your organization produce a corporate or organizational sustainability report? If yes, locate the most recent report and review the initiatives documented there. Are there any initiatives of which you are unaware? If no report is presently produced, what initiatives within the organization would you recommend including in a future report?

In: Civil Engineering

A classification count of vehicles over a 40 day period follows: Austroads Class Vehicle Count Class...

  1. A classification count of vehicles over a 40 day period follows:

Austroads Class

Vehicle Count

Class 1

25,500

Class 3

1,000

Class 4

2,000

Class 9

1,500

  1. What is average daily traffic in terms of vehicles?                                      
  2. What is the percentage of heavy vehicles?                                                
  3. What is average HVAG/HV (NHVAG) using the typical heavy vehicle axle configurations for vehicle classes 3, 4 and 9?                                                                              
  4. What are the heavy vehicle axle group proportions?                                  
  1. A two-way 2 lane rural road (1 lane in each direction) has an estimated 1st year of design AADT of 15,000 vehicles. Given the following data, what is the design traffic loading in terms of ESA?     

Design period = 30 years; Annual growth rate = 3%; %HV = 15% NHAVG = 2.8 HVAG/HV; Average ESA/HVAG = 0.95

In: Civil Engineering

Your boss asks you to design a commercial-industrial building with planned column loads of 2,000 kN....

Your boss asks you to design a commercial-industrial building with planned column loads of 2,000 kN. For each of the locations described below, list the type(s) of foundations you would consider in preliminary planning. Briefly explain your choice.

1) Urban fill extending to depths of ~5 m, followed by ~50-60 m of a soft lacustrine fat clay deposit.

2) Peat to a depth of 2 m underlain by a thick dense granular deposit, the groundwater table is near the surface.

3) A thin (<0.5 m) layer of topsoil over a thick (~10 m) marine sand deposit over competent bedrock.

4) Variable glacial deposits to a depth of ~20 m. These deposits consist of smaller layers of dense granular deposits and overconsolidated fine-grained deposits with cobbles and present at developed locations in the area. Groundwater is variable with several perched aquifers.

In: Civil Engineering

'Dream Job' Paper due. why you want to be a police officer explain what your dream...

'Dream Job' Paper due. why you want to be a police officer explain what your dream job is, duties that you would be responsible for, job qualifications, how you apply for the job, and any incidentals you feel pertinent. ?

In: Civil Engineering

A 240 hp (power-shift) dozer is used in a pushing operation. The dozer is equipped with...

A 240 hp (power-shift) dozer is used in a pushing operation. The dozer is equipped
with a straight blade. The material (dry and noncohesive) weighs 98 pcf in the bank
state. It is estimated the material will swell 6%, from bank to loose state. The center-of
mass–to–center-of-mass pushing distance is 200 ft. Job efficiency can be assumed to
be equivalent to a 45-min hour. Calculate the production in bcy per hour and the
direct cost of the proposed earthmoving operation in dollars per bcy. The company’s
normal O&O cost for these machines is $95 per hour and the operator’s wage is
$15.00 per hour plus 40% for fringes, insurance, and worker’s compensation. (207
bcy/hr, $0.561/bcy).

In: Civil Engineering

Should the management eavesdrop on the telephone or monitor emails? Would an officer be justified in...

Should the management eavesdrop on the telephone or monitor emails? Would an officer be justified in “blowing the whistle” on his superiors and colleagues if their practices are unethical.

In: Civil Engineering

why do vc cycle systems typically use 10 to 20 degrees fahrenheit of sub schooling? Why...

why do vc cycle systems typically use 10 to 20 degrees fahrenheit of sub schooling?

Why do vc cycle systems typically 10 to 20 degrees fahrenheit of super heating?

In: Civil Engineering