Draw a sag curve. surveying class

Introduction

Transportation accounts for a signification amount of the total energy consumed in any country, and Trinidad and Tobago is no exception. The bulk of the energy so used comes from burning fossil fuels.

The Task

You are required to determine the reduction in energy consumption if electric vehicles are used instead of internal combustion engines.

You must also determine the reduction in carbon dioxide generated if the electricity used to charge the vehicles comes from the power stations burning fossil fuels or from solar power.

Finally, you must do an economic analysis to determine the reduction in expenditure with the present subsidy on fuel and if instead the subsidy is given as a subsidy on capital expenditure for electric vehicles and solar panels (CAPEX) and not on fuel (OPEX).

Introduction

Transportation accounts for a signification amount of the total energy consumed in any country, and Trinidad and Tobago is no exception. The bulk of the energy so used comes from burning fossil fuels.

The Task

You are required to determine the reduction in energy consumption if electric vehicles are used instead of internal combustion engines.

You must also determine the reduction in carbon dioxide generated if the electricity used to charge the vehicles comes from the power stations burning fossil fuels or from solar power.

Finally, you must do an economic analysis to determine the reduction in expenditure with the present subsidy on fuel and if instead the subsidy is given as a subsidy on capital expenditure for electric vehicles and solar panels (CAPEX) and not on fuel (OPEX).

3. How does the climatic requirements, site conditions and pollution level of any place affect the day-lighting features/elements to be applied in the design of houses there?

Dynamics of Rigid Bodies

1. The body has a mass of 100 kg and is pulled up a 75 percent inclined by a force P. The coefficient of friction f is 0.25 between contacting surfaces.
a) determine the constant value of P required to bring the body from the rest to a velocity of 6 m/s in 10s

b) what value of P will then suffice to maintain that velocity?

2. A nozzle on the end of a fire hose is 20 m from a vertical wall and makes an angles of 45 degrees with the horizontal. If the stream strikes the wall at a point 8 m above the nozzle, what us the velocity of water as it leaves the nozzle?

A city is evaluating the benefits to be achieved by changing the level of waste collection service. The change would result in (i) reduced service to the customer, (ii) an increase in the number of houses served daily by each crew, and (iii) a cost savings that would put off a 10% collection rate increase for 1 year. The existing rate for collection service (two containers per house) is $12.5/month. List the important variables for (i), (ii), (iii) separately that must be evaluated when the change is planned. Discuss the probability for successful implementation of the change.

A transportation engineer collected the data shown in the Table below. Develop a linear v-k model, and then establish v-q and q-k relationships. Draw v-k, v-q and q-k diagrams and depict all of the critical values (i.e., free-flow speed, jam density, maximum traffic flow, critical speed and density) in the three diagrams

USING ACI 318 Codes

Problem #3: Design the RC beam given the information below. Ensure that the reinforcement fits in the section, and that the section is tension controlled (i.e., phi = 0.90). Simply supported 20 ft beam.

w = 1 kip/ft (dead, does not include self-weight), 1.5 kip/ft (live); f'c = 5,000 psi; fy = 60 ksi; b = 14"; d = 28"; #3 Transverse Reinforcement.

Problem #4: Given the same information above, however Mu = 360 kip-ft; b and d are now unknown. Assume that 1.2D + 1.6L is the controlling load condition. Design the RC beam, and ensure that the reinforcement fits and that the section is tension controlled. Mu does not include the beam self-weight.

Please answer all 3 questions. Thank you!

1) What is the atomic structure and atom arrangement at metal grain boundaries?

2) What is the crystalline atomic structure of ceramics? (both type of bonds and type of structures)

3) Give several examples of common polymers that are thermoplastic and that are thermosetting.

B. A trapezoidal channel with a bottom width of 4 m and side slopes 4H: 1V carries a discharge of 30 m3 /s. The channel has bed slope= 0.1 % and manning roughness coefficient = 0.015. Determine the following:

i. the minimum specific energy

ii. the normal depth iii. the critical slope

iv. state of the flow in the channel

Prepare a duty list for a consultant assistant engineer of a civil engineering project (construction of a pedestrian bridge).

Q1. The short tied column is to be used to support the following factored load and moment: P= 1250 kN and M= 250 kN.m [10 marks]. fc=28 MPa fy=420 MPa

a) Determine required dimensions and reinforcing bars using appropriate ACI column approach [2 marks].

b) Determine maximum ACI design axial load strength for selected column [2 marks].

c) Determine balanced failure point on axial moment interaction diagram [2 marks].

d) Determine the tie size and spacing [2 marks].

e) Draw the typical tie arrangements dimensions [2 marks].