Contractor must perform validation of field construction. Depth and height of the construction area in comparison with the reference point to be used to plan construction, based on the plan and check one's employment contract.Plan the contractor range.
Contractors must verify the correct operation of the construction zone, depth and height of the building compared to the reference points. To adopt a construction plan is required under the plan. And the requirements of the contract plan. Subcontractors
To check the accuracy of the contractors operating construction site, depth, and the height of the construction area compared with the reference point. To use planning according to plan.