2.7 Annual Maintenance or Repair EstimateĮstimate for a work or project is necessary mainly for the following purposes:.
2.3 Quantity Estimate or Quantity Survey.
2.2 Preliminary or Approximate or Rough Estimate.
are required to fix up rates of those items which are not in the schedule of rates.
Standing circulars for taxes and insurance etc.
Rates - Rates for different items of works are vital factors to determine the estimated cost.
This specification of work serves as a guide to execute the work to the owner's satisfaction.
Detailed Specification - Detailed specification describes every item of work in the estimate.
In this, the nature and class of work and the names of materials that should be used are described.
General Specification - The general specification forms the general idea for the project.
The drawings consist of the plan, the elevations, and the sections through important points.
Drawing - The drawing is the basis from which quantities of various items for a work are calculated.
Therefore, it is necessary to list the probable costs or develop an estimate for the proposed work from its plans and specifications.Īn estimate is prepared by calculating the quantities from the drawings for various items and multiplying them with the unit cost of the item concerned. It also enables him to understand the probable cost that may be incurred to complete the proposed work. The minutest details can help him understand if the work can be completed within the stipulated time frame and budget. An estimate for any construction work may be defined as the process of calculating the quantities and costs of the various items required in connection with the work.īefore the start of any work for its execution, the owner of the builder should have a thorough knowledge of the volume of work.