11104

SMOKE-FREE STAIRS

Smoke-free stairwells must be designed in buildings above 28 m, and the height of the building is taken as the height from the planning mark of the ground to the mark of the window sill of the upper floor of the building.

Types of smoke-free stairwells:

H1 - with the entrance to the stairwell from the floor through the outdoor air zone through balcony;

H2 - with air supply to the stairwell in case of fire;

H3 - with the entrance to the stairwell from the floor through the vestibuleairlock with air supply (permanent or in case of fire).

One of the two stairwells (or 50% of the stairwells with a larger number) should be smoke-free type 1-with a transition through the outdoor air zone.

The remaining stairwells should be designed as Smoke-free type 2 or type 3 stairwells.

Smoke-free stairwells should only have access directly to the outside. Exits to Smoke-free stairwells must not be designed through floor-by-floor elevator halls.

Smoke-free stairwell type 1 with a passage through the outdoor air zone through balcony

RAMPS

Ramps are flat slope structures without steps.

Slope of ramps on the way of people movement:

•1 : 6 — inside the building;

•1 : 8 — outside;

•1 : 20 — on the way of wheelchair users movement inside and outside the building and in hospitals.

ELEVATORS

Passenger elevators are provided in public buildings in the following cases:

—in newly designed public buildings-if the floor of the upper floor is 9.9 m or more from the level of the first floor;- in newly designed sanatoriums, in hotels, tourist bases and motels of the category "three stars" - at the level of the floor of the upper floor of 6.6 m or more from the level of the first floor;

—in the buildings of hospitals, clinics, sanatoriums or social service institutions, as well as in hotels and motels of various categories“ five stars" and “ four stars“— if there are two floors or more.

It is allowed not to provide for the installation of an elevator in the case of the superstructure of an existing building with an attic floor when the technical part of the project is already based.

Hospital elevators should be provided:

— in buildings of hospitals, maternity hospitals, hospices, rehabilitation

centers, boarding houses for the disabled and elderly, in sanatoriums with

the location of tent, residential and other departments (premises) above the first floor, where patients can be transported on a wheel-chair.

The number of elevators should be taken by calculation, but not less than two; in this case, one of the elevators is allowed to take cargo and passenger. One of the elevators must have a depth or width of the cabin at least 2.1 m, width-not less than 1.1 m, width of the doorway — not less than

0.85 m, to allow the use of an elevator to transport the patient on an

ambulance stretcher. If the doorway is provided on the wide side of the

elevator, its should be shifted from the center to the side and have a width

of 1200 mm.