Platform 2 Essay Example

Your team identification name

Your Workshop day

The recipient’s company name

The recipient’s address

Dear (Client name)

Our engineering company has been approached to design the civil earthworks design for the construction of a community centre for Leprechaun Heights urban community at the south end of Gold Coast. The safety of the structure and the occupants of the community centre is paramount, especially given that the area is prone to storm surges during cyclones. This means that the centre needs to be constructed on a raised platform, at a reduced level RL 21.0m AHD.

This civil earthworks design entails finding the most suitable location where the earthworks for the community centre should be carried out, with the cost of construction being the main limiting factor. This design determines the cost of construction associated with different locations for the community centre and makes a comparison of three plausible locations with the least cost to determine the most economical alternative. The determination of the most economical location for construction also takes into consideration the other construction activities taking place at the site.

Location 1 was determined to be the most suitable location for the construction of the raised platform where the community centre would eventually be erected.

Yours Sincerely

Griffith School of Engineering

Griffith University

1006ENG – Design and Professional Skills

Semester 2, 2016

Your Project Report Full Title Goes Here

Your Name Goes Here (Include Full Name and Student Number)

Your Team Identification Goes Here (Include the Workshop Day and Timeplatform 2

Table of Contents

iTable of Figures

1INTRODUCTION

1OBJECTIVES

1SELECTION OF OPTIMUM LOCATION

2PRELIMINARY ANALYSIS AND RESULTS

3Preferred Arrangement

4DISCUSSION

4CONCLUSION

5REFERENCES

Table of Figures

Figure 1: Graph of Construction Cost against Site Number 2

Figure 2: Coordinate Location and Contours for Location 1 3

INTRODUCTION

Our engineering company has been approached to design the civil earthworks design for the construction of a community centre for Leprechaun Heights urban community at the south end of Gold Coast. The safety of the structure and the occupants of the community centre is paramount, especially given that the area is prone to storm surges during cyclones. This means that the centre needs to be constructed on a raised platform, at a reduced level RL 21.0m AHD.

This civil earthworks design entails finding the most suitable location where the earthworks for the community centre should be carried out, with the cost of construction being the main limiting factor. This design determines the cost of construction associated with different locations for the community centre and makes a comparison of three plausible locations with the least cost to determine the most economical alternative. The determination of the most economical location for construction also takes into consideration the other construction activities taking place at the site.

OBJECTIVES

The objectives for the earthworks design team for the erection of the platform for the construction of the community centre for the Leprechaun Heights Project are as follows;

  1. To determine possible locations suitable for the construction of the community centre platform

  2. To determine the costs associated with the construction of the community centre at either alternative location

  3. To determine the preferred location and arrangement for the construction of the community centre platform

SELECTION OF OPTIMUM LOCATION

The selection of a possible location suitable for the construction of the community centre platform is generally governed by the costs associated with that location. These costs include transportation of sand to the site, procurement of additional sand should the amount provided be insufficient, costs associated with the proper disposal of excess sand to prevent adverse environmental impacts, among other costs.

The truncated pyramid to be constructed requires to provide a platform
platform 2 1 to facilitate the activities for the construction of the community centre. The abutments of the truncated pyramid drop at a gradient of 1:3 (vertical: horizontal). In order to maintain the required reduced level ofplatform 2 2, the volume of sand to be used depends on the existing ground level and gradient, thus the area for the base of the pyramid being approximatelyplatform 2 3.

Taking this into consideration, 200 different locations (coordinate positions) were considered for construction of the truncated pyramid. The estimated cost for each of these grid locations was then calculated by making use of the MatLab® engineering software, taking into account all the costs that would be associated with that specific grid plot.

The optimum location chosen is that which the cost of construction, with all associated activities is the least.

PRELIMINARY ANALYSIS AND RESULTS

The graph for the estimated costs against the grid/ site number is as shown below;

platform 2 4

Figure 1: Graph of Construction Cost against Site Number

From the above graph, the estimated cost of construction of the truncated pyramid varies widely from approximately
platform 2 5 on the lower side up to
platform 2 6 on the higher side.

This estimated cost of construction varies widely for the different proposed locations due to the general unevenness of the site where the community centre can be constructed. The values in the contour show the elevation of sections of the project site vary from as low as RL 2.0m AHD to RL 16.0m AHD. This translates to a large variation in the volume of sand required for the platform at the various locations, thus the large variation.

Preferred Arrangement

Location 1 is adopted as the preferred location for the construction of the truncated pyramid to provide the platform for the erections of the community centre. This location is preferred due to the lower costs associated with this location, compared to the other possible alternatives.

The properties of Location 1 are as follows;

platform 2 7platform 2 8

Figure 2: Coordinate Location and Contours for Location 1

Location 1 is located close to the East edge of the plot. The contour levels for the natural ground level where the platform is proposed to be constructed are in the range of approximately RL 2.0m AHD to RL 10.0m AHD. The area of land and volume of sand required for construction of the platform in this location is given in the table below. Given the area of land and the volume of sand needed for the truncated pyramid, the estimated cost was also calculated as below;-

Table 1: Cost Estimation for Location 1

platform 2 9

It requires the least area of land for the erection of the platform to provide the prerequisite working area, reducing the cost for purchasing of land (platform 2 10). The sand volume required for erection, however, is more than the volume available from other activities in the vicinity. This means that an added cost of
platform 2 11needs to be accounted for should this location be chosen.

DISCUSSION

The main criteria used for the design of the platform is the costs incurred. The estimates of the costs provided for the various components required to ensure completion of the project has been used to determine the most suitable location. Considering this criteria only, the objective of determining the most economical site for construction is achieved.

This estimation, however, is a widely general approximation and there are probable differences that may be experienced during the actual construction of the platform. Some of the factors that could result in these differences are;-

  1. Transport costs of the sand available close to the chosen location have been neglected but may be significant given the large volume of sand to be hauled

  2. Existing conditions at the site could result in different challenges to the construction project. This has been neglected but the relatively large size of the proposed site could be a factor. [ CITATION Kos16 l 1033 ]

The effect of these factors may, however, be relatively insignificant compared to the cost of sand and haulage to and from the site.

CONCLUSION

Despite having a high requirement in volume of sand required to complete the platform, Location 1 gives the lowest overall cost for the completion of the truncated pyramid. The high sand volume requirement is countered by the relatively low cost of purchasing sand as opposed to that of disposing it. Location 1 is therefore chosen as the preferred location as the benefit accrued from saving on purchase of land is more than that offered by saving on sand purchase at the other locations.

REFERENCES

Kosloff, K. (2016). Unforeseen Conditions and Hidden Costs of Construction Projects. Retrieved from ECHO: http://www.echo-ca.org/article/unforeseen-conditions-and-hidden-costs-construction-projects