Code of practice for architectural and building drawings
1989 Edition

IS 962 (1989) refers to IS 10711:1983 for the standardized dimensions of architectural drawing sheets. These sizes conform to the ISO A series and include dimensions such as A0 (841 × 1189 mm), A1 (594 × 841 mm), A2 (420 × 594 mm), A3 (297 × 420 mm), and A4 (210 × 297 mm). These sizes are used across architectural and engineering disciplines to maintain consistency in documentation and presentation. For detailed layout and title block guidelines, IS 10714 and IS 11665 should be consulted respectively.

IS 962 prescribes that any alterations or revisions on building drawings be documented using a dedicated revision panel adjacent to the title block. This panel includes the revision identifier (number or letter), the date of the change, the specific zone or component updated, a brief note describing the modification, and the initials of the person authorizing the revision. The revision entries are arranged sequentially from bottom to top and may be oriented horizontally or vertically. This approach facilitates clear tracking and reference of changes across large or complex drawing sets.

According to IS 962, graphical symbols for doors and windows represent various types such as vertical centre hung, vertical sliding, side hung (both right and left), single and double leaf swing doors, folding sliding panels, and rolling shutters (internal and external). The hinge side is shown by the apex of crossing lines on ventilators and casements. For sanitary appliances like water closets, sinks, and bathtubs, specific standardized symbols are recommended to clearly depict these fixtures on architectural drawings. These symbols ensure uniformity and clarity in building documentation.

IS 962 outlines that buildings within a project are assigned unique numbers for identification. Rooms are numbered using a three-digit system where the first digit corresponds to the storey number and the last two digits represent the room’s sequence on that floor (e.g., 101 for the first room on the first floor, 201 for the second floor). Room numbering typically progresses clockwise starting from the main entrance. Suites comprise a series of consecutively numbered rooms, with room names and numbers clearly indicated to denote functional groupings within the building.

IS 962 references IS 10711:1983 for dimensioning practices, emphasizing clarity and proper placement of dimensions. Lettering guidelines are drawn from IS 9609 (Part 1):1983, recommending use of uppercase letters with standardized heights, generally between 2.5 mm and 5 mm, depending on drawing scale. The font should be clear and legible, suitable for technical drawings. These standards ensure uniformity and readability of text and numerical data on architectural and building drawings.