Specification is an important document attached with a tender form/contract agreement which in most cases controls the quality of materials and works. Sometimes, specifications may be used to describe matters which could not be explained clearly by drawings/sketches. This chapter explains the different types of specifications and their necessity.


            For each proposed work, numbers of drawings are prepared to explain the details of foundations, basement, superstructure, roof and floors joinery etc., whatever attempt is made to furnish complete working drawings, it becomes necessary to describe the drawing in detail.  This description in works without sketches and sometimes with line sketches giving details of standard materials, method of construction and the requirements of workmanship of construction etc., is called specification.


            1. The specifications define the quality of materials and workmanship. Hence this will help the contractor to quote correct rates for the different items of works. 2. The information contained in the specifications will serve as a guide to the contractor as well as to the supervising staff during execution of the work. 3. Specifications help the owner to check and satisfy with the works, during execution. 4. In case of disputes between the owner and contractor with respect to the method of construction, quality and quantity of materials used, equipments and machineries used etc, the specifications play the major role in solving the disputes and arriving at a settlement.


            Drawings and Specifications form two important contract documents. Information such as dimensions, type of construction, etc. Which can be easily expressed graphically is put up on the drawings. On the other hand, instructions which can be easily expressed well in writing are written in the specifications. But generally, the provisions in the specifications are given more legal strength and most of the contracts state that in case of discrepancy between the drawings and specifications, the provisions of the specifications shall be the final.