Cost Estimate For Building David And Tara King’s Garage And Workshop

Use the specification table below (Step 1) and the information contained in the assessment, to prepare a cost estimate to be included in a tender for the building of David and Tara King’s garage and workshop (Step 2). Your cost estimate will be based on the relevant sections of the Including the calculations used to research your answers.

Your cost estimate will focus on the roofing (23° gable end pitch roof), bulking, slab, reinforcement, concrete, timber frame, plasterboard and door and window elements for the construction.

Your cost estimate will include unit costs and cost summaries of labour, materials and project costs including the following:

1. i) the calculated labour costs for the site personnel, contractors and non-contract elements for the construction elements listed 

1. ii) the calculated material costs for the construction elements listed covering the materials needed, quantities, supplier prices and any plant or equipment requirements 

iii) the costs of anticipated WorkCover, Environmental Protection Agency and waste management site fee costs 

1. iv) applied overhead and recovery margins. 

Using the cost estimate template below, refer to the relevant pages of the to complete your cost estimate for the Kings. Remember your cost estimate should be based on the specifications itemised described in Step 1. 

Part A.

This assessment has been designed to allow you to provide partial evidence of your competence in the unit  Identify and produce estimated costs for building construction projects. In completing your assessment, you will show evidence of your ability to:

• Read and interpret plans and specifications
• Identify and calculate labour costs
• Identify and establish physical resource requirements
• Develop estimated project costs. 

Read the scenario below that relates to the building of the King house and carry out the tasks that follow.Your previous assessments that involve the King house plans will assist you with this project.   

Consider the plans for the David and Tara King’s house and imagine that you are responsible for developing a cost estimate to include in a tender for the Kings. For your quote, you will include a cost estimate for the construction elements to the combined garage and workshop in the template provided.

To develop your cost estimate you will need to:

- read and interpret the King plans including understanding the measurements and the material quantities required

-calculate rates/costs of on-site personnel and labour hours

-identify physical resources, materials, consumables, plant and equipment requirements

-estimate all project costs for inclusion in the cost estimate.

Part A.

Firstly, read and show you can correctly interpret the below and answer the following 10 questions:

Part B

Step 1

Read the specification table below for David and Tara Kings garage and workshop to calculate all the items you need to include in your cost estimate.    

Step 2

Using the cost estimate template below, refer to the relevant pages of the Cordell Student Building Cost Guide to complete your cost estimate for the Kings. Remember your cost estimate should be based on the specifications itemised described in Step 1. 

Cost estimate - David and Tara King 

Excavation:

1/ Remove topsoil and set aside. (Top 100mm)

            Garage Length (m) x Garage Width (m) = 19.5 x 3.28

            Total Area x Unit rate = Subtotal cost 

             63.96 m2 x $2.56 = $163.74                                    

2/ Detailed excavation for trench footings. (0.3m x 0.4m)

            Centreline perimeter x Unit Rate = Subtotal

            44.36m x $19.20 = $851.71

Excavation total = $1015.45

Concrete:

1/ Footing Beam 0.3m x 0.4m.

            Area of Footing x Centreline perimeter = Footing beam Volume

0.12x 44.36= 5.32m³

Footing Volume x Unit Rate = Subtotal

5.32 x 234.70 = $1249.36

2/ Slab on ground 10m x 6m.

            Length x Width x Height = Volume

            10 x 6 x 0.625995 = 37.56m³

            Volume x Unit Rate = Subtotal

            37.56 x 249.37 = $9366.33

Concrete total = $10615.69

Concrete reinforcement

1/ Reinforcement to Footings

            Centreline perimeter x unit rate = Subtotal

            44.36 x 2.36 = $105.26

2/ Reinforcement to Slab

            Length x Width x Unit rate = Subtotal

            10 x 6 x $3.86 = $231.6 

Concrete reinforcement total =$336.86

Timber framing: (MGP10@ 450mm centres)     

1/ Wall framing 2400mm high.                                

            Centreline perimeter x unit rate = subtotal

            45.47m x $ 6.89= $313.29

Timber framing total =$ 313.29 

Roofing: (23 degree pitch)

1/ Roof area = Length x (Rafter Length x 2).        

            (Hint: Use Cosine Ratio)                                          

Roof Area = 19.5x3.28cos23

Roof Area = 58.88m²

Roof area x unit rate = Subtotal

58.88 x 36.52= $2150

Roofing total =$2150

Window and Door Schedule

1/ Door

820mm x 2040mm x 35mm                                         

Door total =$155.25

2/ Window Awning Aluminium

1200mm x 1200mm                                       

Window total =$255.38

Plasterboard         

1/ Interior Walls

Perimeter x Height = Area

            Area= (Int. Perimeter x Height) - (window + door)

                        45.2x 2.4 = 108.4891

            Area = 108.48- 3.11

            Area x unit rate = subtotal

            105.37 x 18.31 = $1929.25

Plasterboard total =$1929.25

Ceiling

            Interior Area= Int. length x Int. width

19.38 x 3.16= 61.24m²

Area x Unit rate = subtotal

61.24x 19.99 = $1224

 Ceiling total =$1224                                                             

Apply the costs of anticipated WorkCover, Environmental Protection Agency and waste management site fee costs

WorkCover total =$179.95

Applied overhead and recovery margins.                                                                                                         

 Sub total =$18,175.12

 Overheads =$1000

Builders Margin =$500

GST =­­­­­­ $1967.51

Total project costs Inc GST =$21,642.63

Items to submit as evidence for this assessment: