What mistakes can not be made when arranging floors (SNiP 2.01.07-85)?

Hello! The title of this article indicates the most important document that every thinking person is simply obliged to read before equipping an interfloor ceiling in his house.

If you don't have much time to read, you can read my extracts from SNiP, this will also be useful:

1) Most important - calculate the permissible load on the floor slab. Remember: 1 sq.m. overlap must withstand at least 150 kg of mass (this is according to SNiP, but what is in reality?)

It is optimal to choose the distance between the beams so that
1 square meter of overlap did not even withstand 150, and 400 kilograms - only this stock allows you to put both refrigerators and freezers upstairs, and equip a second bathroom and even a pool.

2)Beam deflection. It should be no more than 1/250 of the span length. Otherwise, you will get half a trampoline :) If you are equipping a wooden floor, buy a pine bar that has dried for at least a year.

3) The size of the bar for beams
Here's a good guideline for you: if the beam is made of pine timber, and the step between the beams is 60 cm (under the width of the mineral wool), then for an overlap with a length of 6 m you can use

Timber ONLY 200: 200 mm.

For 100: 200 mm beams, placed on the edge, the maximum available length is 4.9 m. For 150: 150 mm beams, the maximum is 4.2 m.

What can you say about this "growing" of floors?

And if the house is longer than 6 meters?

If your span is longer than six meters, you will have to use beams not from ordinary, but from glued laminated timber, or I-beams, and ideally a hybrid (metal-wood beams) or cantilever trusses.

Only such structures allow making reliable floors up to a length of 10 meters.

Your opinion and questions in the comments?

Welcome any questions, ask building advice!