1.1 Background
Now a day the construction of residential building are very growing in Thailand. Generally for Thai contractor, They always use subcontractor to be main labors in construction process such as rebar contractor, formwork contractor, concrete casting contractor, Post tension contractor, masonry contractors etc.
Because residential building need to completed as soon as possible for the project to be sold or delivered to customers as quickly as possible. So subcontractor are needed. Because subcontractors are featured in speed of construction.
And most of payments to subcontractors are lump sum. So it easy for main contractor to do a cost management and control budget.
Since subcontractors are the main labor of the construction work. Thus, errors or risks of subcontractor are significant and disrupting the plans and entire project.
Therefore, we will analyse the risks that resulting from subcontractor. Determine the major risk factors. To reduce/ prevent the risk from occurring and make them become acceptable risk.