An environmental impact assessment conducted in the wake of COVID19 lockdown assessed the difference in toxic air particles’ exposure in following two samples: 1. 100 construction workers in Defence Lahore 2. 120 construction workers in Sundar Industrial Estate (SIE) The mean exposure of workers in Defence was 20 mg/m3 with a standard deviation of 8 33 mg/m . For workers in SIE, the mean exposure was 10 mg/m with a standard deviation of 3 2.5 mg/m . (a) Use a 90% confidence interval to describe the difference in the exposures. (b) Test the null hypothesis that the exposures for these two types of workers are the same.

On January 5, 2012, Mountain View Company purchased construction equipment for $698,400, with a useful life of six years and an estimated salvage value of $87,000. The company uses the straight-line method of depreciation. On July 3, 2016, this equipment was traded for new similar construction equipment that has a value of $800,000. The company paid $595,000 in cash and was given a trade-in allowance of $205,000 for the old equipment.

Prepare the general journal entries needed on July 3, 2016, to record the trade-in.

Please do not copy from Chegg otherwise I have to report the answer. Explain the answer thoroughly by showing each step of the calculation.

Explain a detailed step-by-step method to install a Slurry Wall SOE.

Assumptions and given data:

1. The SOE is constructed in an urban setting with an excavation depth of 60ft and it will be a permanent structure.
2. The water table is located 20ft below the ground surface.
3. Topmost 40ft of excavation is entirely sand (N value < 30)
4. Below this sand is a soft-to-medium clay to a depth of 60ft and below it is the Bedrock.
5. The external groundwater level must be maintained.

Provide the following in the explanation:

1. Equipment used to install the slurry wall.
2. Procedure for excavating downstage after the slurry walls are installed.
3. Give details about the concerned construction risks and advantages of slurry wall construction.

1. List and define the three basic goals of a design team for the design of any building.

2. Provide an example of each of the following types of construction. Bearing wall

   a. Beam-and-column b. Long-span
   c. High-rise
   d. Gable-frame

3. List and describe two types of lateral load resisting systems commonly used in beam-andcolumn construction.

4. Provide a simple definition of structural design.

5. Give a description of both the LRFD and ASD design approaches. What is the fundamental

   difference between the methods?

6. Identify three sources of variation in the strength of a structure and its components.

7. Provide two examples of serviceability limit states.

You are safety site supervisor for a commercial construction company. The company employs 12 administration personnel, 18 construction personnel and 60 subcontractors. They have a fairly strong health and safety program, but are concerned about increasing back injury reports. Workers have been asked to identify and report on any inadequacies in existing risk controls relating to back injury and to the hierarchy of control.

To whom should workers report? What are the responsibilities of the HSR or HSC in terms of reporting and monitoring the results of responses? What is the hierarchy of control, how does it impact on risk controls in a situation like this, and why is important to regularly monitor and report on inadequacies?

Compute the component percentages for Rhodes income statement below. (Enter your answer as a percentage rounded to 2 decimal place (i.e. 0.1234 should be entered as 12.34). Enter all answers as positive values.) Compute the component percentages for Rhodes income statement below. (Enter your answer as a percentage rounded to 2 decimal place (i.e. 0.1234 should be entered as 12.34). Enter all answers as positive values.)

BACKGROUND

In the coming fiscal year, the Chief Procurement Officer (CPO) of a large metropolitan county will be responsible for contracts that are worth more than $100 million in construction and facility renovation. The county procurement staff will be taxed to award all of these projects in the time allotted. The CPO attended a presentation on Job Order Contracting (JOC) at a recent national procurement forum. JOC is a competitively bid, firm fixed price contract with indefinite quantity designed to accomplish small to medium multi-trade maintenance, repair and minor new construction projects. The procurement department plans to issue a Request for Proposals containing a Unit Price Book, which contains a comprehensive listing of specific construction related tasks together with specific units of measurement and unit prices that are fixed for the duration of the contract. Each unit price is comprised of the labor, equipment and material costs to accomplish each specific task. Contractors will submit price adjustments to the unit prices as published in the Unit Price Book. The Unit Price Book reflects labor rates, construction material, and construction procurement costs in the area. Contractors must bid three adjustment factors; one for work to be accomplished during normal working hours, one for work to be performed during other than normal working hours and one for work to be performed during premium working hours. All adjustment factors are expressed as an increase or decrease from the published prices. Award will be made to the qualified contractor submitting the overall lowest pricing structure. The awarded contractor will receive Job Orders for specific projects they submitted proposals for, based on the Unit Price Book and adjustment factors. The contractor will be responsible for all subcontractors and satisfactory completion of all work in the agreed time. The County Commission has made it clear that the preponderance of these projects should be awarded to local businesses with particular emphasis on awards to small, woman and minority owned businesses.

DISCUSSION

The CPO believes that using JOC may be a way to quickly move the large number of projects forward during the fiscal year. There are several large, national firms with extensive experience in JOC. There are also nationally recognized indexes of construction tasks and unit prices that are updated periodically to use as the Unit Price Book. However, the CPO is not aware of any local firms or governments that have used this method of contracting.

QUESTIONS

1. How would JOC support each of the goals of public procurement?

2. Which goals might be more likely to be supported? Are there tradeoffs to consider?

3. What legal, procedural, political and management issues would confront the procurement department?

4. What might be the reaction of the County Commission to this form of contracting?

What will be the values of A, B, C and D after execution of the following procedure using the “Scores”

dataset?

Note: Consider fractions up to 2 decimal places e.g. 10 / 3 = 3.33, 20 / 3 = 6.67

Step 1. Arrange all cards in a single pile called Pile 1

Step 2. Maintain five variables A, B, C, D, percentage and initialize them to 0

Step 3. If Pile 1 is empty then stop the iteration

Step 4. Read the top card in Pile 1

Step 5. Calculate percentage: divide TOTAL marks by 3 and store the result in percentage

Step 6. If percentage ≥ 85 then increment A

Step 7. If percentage < 85 and percentage ≥ 70 then increment B

Step 8. If percentage < 70 and percentage ≥ 60 then increment C

Step 9. If percentage < 60 then increment D

Step 10. Move the current card to another pile called Pile 2 and repeat from step 3

What will be the values of A, B, C and D after execution of the following procedure using the “Scores”

dataset?

Note: Consider fractions up to 2 decimal places e.g. 10 / 3 = 3.33, 20 / 3 = 6.67

Step 1. Arrange all cards in a single pile called Pile 1

Step 2. Maintain five variables A, B, C, D, percentage and initialize them to 0

Step 3. If Pile 1 is empty then stop the iteration

Step 4. Read the top card in Pile 1

Step 5. Calculate percentage: divide TOTAL marks by 3 and store the result in percentage

Step 6. If percentage ≥ 85 then increment A

Step 7. If percentage < 85 and percentage ≥ 70 then increment B

Step 8. If percentage < 70 and percentage ≥ 60 then increment C

Step 9. If percentage < 60 then increment D

Step 10. Move the current card to another pile called Pile 2 and repeat from step 3

Use a business periodical or the Internet to determine how the value of the foreign currency of concern has changed over the last year. What is the mean percent-age change over these months? If you believed that the currency's value would continue following the recent trend, would it appreciate or depreciate in the near future?