Standard sizes of doors and doorways are indicated in special documents - SNiPs. Entrance and interior doors in the house: standard size and width of the doorway The application of standards for window and door openings facilitates the work of manufacturers of door panels and window frames. A standard doorway should provide free access to the room, not only for people, but also for furniture. The window opening must provide the desired level natural light, while the strength of the structure should not suffer. Construction standards provide for all the nuances: the materials to be used, the dimensions of buildings, as well as the dimensions of window and doorways. In order not to start the calculations anew each time, they created special standards, adhering to which you can quickly build high-quality buildings. Therefore, designing precedes the construction - thinking and miscalculations on paper. The design must be strong, durable, earthquake-resistant. The construction of buildings and structures is a complex multi-stage process, associated with many approvals and requirements.
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