1. List the four steel application-based classes and briefly explain each.
2. Sketch the commonly used hot-rolled sections used in building construction.
3. Each W-shape is designated by two numbers. What means W 14 x 38?
4. Discuss two basic approaches used for fire protection of steel
5. In a typical structural steel floor or roof framing, there are three types of elements, called primary, secondary, and tertiary elements. Explain what these are and what material(s) they consist of.
6. Explain the pros and cons of welding versus bolting in steel structures.

What is the formula for maximum deflection and maximum bending moment of a simply support and cantilever beam that carry a uniformly varying load?

what are the following field procedures: Intersection & Resection? Identify the different types of each. Provide a simple sketch of each  

The world has been hit hard by the latest COVID-19 pandemic, and health services and authorities in every country are struggling to reduce spread, fight disease and protect the population. Strict restrictions on movement, social distance and locking in certain cities have been imposed on people and businesses since the outbreak in Wuhan, China in December 2019. However, these widespread lockdowns, social distances and restrictions have led to major changes in human activity and have therefore produced some jarring effects across land, air and sea. Based on your knowledge, you can concisely describe the effects of the COVID-19 pandemic on our environment and discuss the effects on human activity, the current status of pollution and ways to mitigate pollution. The explanation should reflect to the THREE type of pollutions below:

1. Nose pollution
2. Soil pollution
3. Air pollution

Question 4

Travel time of a 4ha catchment of a residential land use (C₁₀ = 0.32) in Adelaide is 20 minutes. If the catchment area is equally divided into four parts by the 5-minute isochrones, compute 100yr design flood peak at the catchment outlet. What is the runoff volume generated from this storm event? Compute equivalent ø index of 100-year design storm event for this catchment.

1. How do different long term climatic conditions (including air temperature, humidity,
solar radiation, precipitation) affect the performance of concrete, steel and timber?
2. Discuss the formation of different types of cracking in concrete. What will be the potential problems if these cracks are not repaired? Discuss the methods to prevent and fix the cracks.
3. There are two parts below:
a. What is difference between Minor Destructive Test (MDT) and Non Destructive Test (NDT) of concrete? In which situation, NDT will be preferred for assessing the concrete?
b. In order to assess the conditions of slabs and columns of this 30 years old reinforced concrete structure, give your suggestions for (i) assessment methods (ii) testing parameters

Discuss sub-surface investigation in rocks and structural geology of rocks.

What are the geological consideration for the selection of Dam and Reservoir site?

With the aid of a sketch, explain what is lateral torsional buckling of a steel beam, when it might occur, and what a structural engineer would do about it.

What is the checking regime for a permanent scaffold on a construction site?

Why are the slabs for composite construction designed as simply supported rather than continuous?

Alan offers, on day 1, to sell a book to Bob for $100. He then changes his mind and puts a revocation letter in the mail on day 2. Bob puts a letter in the mail on day 3 accepting the offer, and then on day 4 receives the revocation letter. The most accurate statement concerning the contract implications of this is

Group of answer choices

a contract has been formed on day 1

a contract has been formed on day 2

a contract has been formed on day 3

no contract has been formed

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Question 101 pts

Mark says to David "If you walk across the Brooklyn Bridge on April 30, I will pay you $100." David agrees to do this but then changes his mind and does not walk across the bridge on April 30. Of the following statements, the most accurate one is

Group of answer choices

David has breached a contract

David has not breached a contract because he was never paid $100

David has not breached a contract because there was no consideration

David has not breached a contract because there was no acceptance

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Question 111 pts

Suppose that, in the preceding question, David starts to walk across the Brooklyn Bridge but after he has completed three-quarters of the walk, Mark says to him "I revoke my offer." At this point in time,

Group of answer choices

there is no longer any contract because the offer has been revoked prior to acceptance

Mark has breached a contract with David to pay him $100

Mark's revocation is not effective because David has started to walk across the bridge

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Question 121 pts

Suppose that, in the previous two questions, David never tells Mark that he will walk across the Bridge, but on April 30 he does so. The most accurate statement below is

Group of answer choices

Mark owes David $100 because a contract was formed and David performed his contractual obligations

Mark does not owe David $100 because David never formally accepted the offer

Mark will only owe $100 if David can prove that Mark knew he was going to walk across the Bridge

Mark does not owe David $100 because Mark is not getting anything of value out of the agreement

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Question 131 pts

Acme Contractors agreed to build a home for $200,000. The contract called for performance in 80 days, but because of the owner's breach of the contract it took Acme 100 days to complete the contract. During this 100-day period, Acme had another contract, also in the amount of $200,000, and had home office overhead in the amount of $10,000. Acme sues the owner for delay damages. Under the Eichleay case, Acme is

Group of answer choices

not entitled to damages for lost home office overhead because it would have incurred that overhead in any event

entitled to $1,000 in lost home office overhead

entitled to $5,000 in lost home office overhead

entitled to $10,000 in lost home office overhead

Explain Thomas model and the parameters (A, B, C and D). Discuss

Calibration and Validation process and why do you need Excel-based Solver for

Calibration. Is Thomas model a simulation model? Explain. Is it conceptual,

physical or empirical model?

Assuming the following information is known about two lines, compute the coordinates of the intersection of the two lines (all information in feet).

Line AP (Where Point P is the Point of Intersection)

Point A (N,E) = 5016.07, 5020.42                  Bearing AP = S 44^o 59' 47" W

Line BP

Point B (N,E) = 1671.56, 5487.06                  Bearing BP = N 56^o 33' 17" W