THE COSTS FOR ESTIMATES MAY BE ROUGHLY SEPARATED ON THE BASIS OF PERCENTAGE OF THE TOTAL COST, HOWEVER ITEMS OF WORKS AND FIGURES RELATED TO LABOUR COMPONENTS ARE MORE OR LESS APPROXIMATE.

In general case of an ordinary type of building the cost of materials come to about 60 percent and the labour about 40 percent of the total cost of the whole building and this may be further sub divided as percentage of the total cost and it may be verified separately on the basis of the items of works. Further the amount of work that may be done by a skilled or an unskilled labourer puts in is very variable depending the skill of the man, his stamina, location, climate, timings and several other factors. There fore, the figures given above for the labour items are more or less approximate, even in the case of the buildings construction. The work done by a labourer in one day roughly analysed on the basis of the each items of the work and According followed for the percentage of the total cost of the building or other construction works, specifically depending upon the each item of the work and papers to be submitted with a project estimate, generally consists of the report detailing scope of the work. Reference of the authority ordering preparation of the estimate and other correspondence on the subject matter related to the, previous history of the case and the work, design &scope of the work, cost how to be financed, The object to be gained by the execution of the work. Explain any unusual features which require elucidation and the reason for adoption of the project or design in preference to others. Availability of material and labour and agency for the construction of work and time specified for the construction of the work including the completion report of the scheme for Specifications and design and reasons why particular design chosen. NOTE:-- In some departments rates are based on plinth areas or cubic contents of similar works previously built, but estimates framed on the basis of apologies from existing works are not very reliable and before this method is adopted the correctness and accuracy must be examined or otherwise the analogy should be carefully tested for selected portions of the works. In particularly analogies drawn from the small works should never be relied upon for the preparation of large projects. The detailed drawings as required on the suitable scale, including the site plan and cross section of the plan is too essential for the accurate lay out plan of the building and the structure for the project estimate, other than the buildings.