STRUCTURAL SOLUTIONS OF STAIRCASES OF AN ABOVEGROUND PEDESTRIAN CROSSING, TAKEN INTO ACCOUNT WHEN DETERMINING THE DEGREE OF FIRE RESISTANCE

The object of the study is the staircases of a pedestrian crossing located on the territory of an urban settlement. The elements of building structures of staircases are considered, which are taken into account when determining the degree of fire resistance of the pedestrian crossing under study as a linear object. The analysis of the compliance of staircases with the requirements of regulatory documents has been performed. The figures show the placement of the calculated points and illustrate the blocking situation due to loss of visibility. The description of the elements of staircases necessary to determine the maximum degree of fire resistance of the object of protection is performed.