WBS - building condominium

This is our WBS for buliding condominium.

Tutorial 5 - Risk

Risks are combination of the likelihood of an occurrence of a hazardous event or exposures and the severity of injury or ill health that can be caused by the event or exposure. Risks can be known and unknown.

In addition, Risks have positive or negative effects on at least one of the project objectives (Scope, cost, schedule, performance). Managing construction project risks is considered as compulsory for any project to be successful.

Tutorial 5 is ragarding to use the WBS to carry out a Risk assessment and analyze the project. The above table is the assessment and analysis of the Top 5 issue as well as the impact on the 2 of the Top risks.

Tutorial 4 - schedule

This tutorial is create a schedule and perform a network analysis (AON) based on our WBS.

Our project estimated completion time is 909days [(365 days x 3) - (52days x 3) - 30holiday]
project start on 24 May 2010
earliset finish time = 904 days (14/5/2013)
Float time = 5 days

Tutorial 3 (2)

Our ROI (Return of Investment)

Estimated total cost: $25, 419, 364
Estimated total claim interim payment from client: $37,119, 960

We assume that there has a 5% defect of the gain, so final gain is 95% of total interim payment from client.

ROI = ($35,263,962 - $25,419,364)/$25,419,364
= 38.7%

Tutorial 3 - Costing

What is cost estimation for main contractor of construction?? Normally, for a contractor, a bid estimate submitted to the owner either for competitive bidding or negotiation consists of direct construction cost including filed supervision, plus a markup to cover general overhead and profits. The direct cost of construction for bid estimates is usually derived from a combination of following approaches.
- Subcontractor quotations
- Quantity takeoffs
- Construction procedures

In this Tutorial must apply the WBS concept into costing. Based on our WBS as Tutorial 2, the main elements are people (labors/staffs), materials, machinery and equipments. Hence, we use these items as parameters for the cost estimates.

In addition details of the costing must include fixed costs, variable cost and others costs.
Fixed costs - staff's salary, subcontractor's quotation, materials costs
Variable costs - labors' salary, machinery and equipments cost
Others costs - foreigner working permit levy, hire ausitor inspect site, contigency cost

Tutorial 2

2nd phase of our project - Work Breakdown Schedule (WBS) using software to mind map.

(http://www.mindmeister.com/)



For main contractor to break down the work schedule of Construction 2 block of condominium there has few components must included in mind map like people, materials, site facilities, machinery & equipment and local authority. Then base on these five components to break in more details; ulimately can scope & rough estimates on time and budget to complete the project.

Resources requirement &Machinery and equipment