Sri Ramakrishna Mission Vidyalaya Polytechnic College, Coimbatore - 641 020

  Who Is A Contractor? A contractor is an individual or an institution responsible for the completion of a project on behalf of the client. This individual undertakes a variety of tasks and manages a large number of people. The contractor plans and estimates the project requirements and anticipates any modifications.  The contract specifies health and safety specifications and budgets the construction activities. The main contractor hires subcontractors to carry out specific tasks. The contractor is responsible for coordinating with all subcontractors and ensuring they have the right qualifications and skills to perform their assigned tasks. This person tracks the entire project and makes sure it is completed on time.  The contractor is also responsible for providing all building materials and overseeing the vendors of those materials. If the material is of poor quality or is not of a proper standard, he is responsible for exchanging it. Role And Responsibility Of General Con

  While designing R.C.C. beams, following important rules must be kept in mind: Effective Span (CI. 22.2, IS 456) The effective span of the beams are taken as follows : (a) Simply Supported Beam or Slab The effective span of a simply supported beam or slab is taken as least of the following: (i) Clear span plus the effective depth of beam or slab. (ii)Centre to centre distance between supports. (b) Continuous Beam or Slab In case of continuous beam or slab if the width of the supports is less than 1 12 of the clear span, the effective span is taken as in (a). If the width of the support is greater than 1 12 of the clear span or 600 mm whichever is less, the effective span is taken as: (i)For the end span with one end fixed and the other continuous or for intermediate spans, the effective span shall be the clear span between the supports. (ii)For end span with one end free and other continuous, the effective span shall be equal to the clear span plus half the effective depth of the beam