Working drawings, also known as good for construction drawings (GFC), are drawings provided by the architect that give detailed dimensioned, graphical information that can be used by a contractor to construct the works, or by suppliers to fabricate components of the works.
These are one of the most important document released by the architect of a project because the accurate execution of these drawings determines the project's success. An important factor to consider when deciding on various working drawing components like dimensioning style, font, details, instructions, start points, north direction, key plan, etc. Is that they are intended for construction workers and clients. It should be chosen in such a way that it is self-explanatory, with as few errors as possible in its comprehension and execution.
Working drawings have traditionally been two-dimensional orthogonal projections of the building or components and are drafted to an appropriate legible scale which is easily readable. Today, Building information modeling (BIM) is increasingly being used to create three-dimensional representations of buildings and their components for construction. It also allows different stakeholders to collaborate easily as a virtual construction model (VCM), and can include a variety of models.
Architectural Drawings (It includes everything starting from plans, elevations, section drawings to the railing details, flooring, cladding, etc.)
Structural Drawings (These drawings comprise of details starting from foundation level to the plinth and then the slab)
HVAC, Electrical, Plumbing and Firefighting Drawings (Services are planned in advance by hiring consultants alongside for which drawings have to be produced in collaboration with them)
Any building construction cannot commence without due permission from the concerned local authority in charge. For getting a building permit, a set of drawings have to be submitted to the authority which are commonly called as submission drawings or permit drawings.
Permit Drawing must include precise information to determine whether the proposed work complies with all applicable regulations, the majority of which are concerned with life safety. A substantially detailed sub-division plan, site plan, elevations, sections, all floor plans, and building services details are usually required. Space calculations are crucial in these drawings, a statement of FSI consumed, Total Built up area, Open Space, Amenity Space etc. should be clearly mentioned. To sum up, these drawings have more to do with the compliance of building regulations and the proposal.
1. sub-division layout: plan which shall be drawn to a scale 1:500
2. Site Plan: Should Mark the Position of the site, Means of access from the street, Setbacks to secure free circulation of air, admission of light and access. Existing physical features, such as wells, tanks, drains, pipelines, electrical provisions, trees, etc.
3. Plans: drawn to a scale of 1:100.
All floors together with the built-up area clearly indicating the sizes of rooms and the position and width of the staircase, ramps, and other exit ways, lift wells, lift machine room and lift pit details, meter room, and electric sub-station. Must include a ground floor plan and basement plan indicating the details of parking space. Dimensional details of doors, windows, and ventilators.
4. Elevation and Section: Sections showing the thickness of basement wall, wall construction, size and spacing of framing members, floors, slabs, roof slabs with the materials. Shall indicate the height of the building, rooms and parapet, drainage, and slope of the roof. (Mandatory section through the staircase) Dimensions of the projected portions like balconies and terrace plan indicating the drainage and the slope of the roof.
5. Service plan - Details of water supply, pump room, water tank, sewage disposal and treatment system, rainwater harvesting system and details of building services.