Chapter s4 escape v130 page s4 6 g75101 fixed seats 1

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Chapter S.4 Escapev130Page S.4-6
G.7.5.10.1Fixed seats1.The number of seats fixed to the floor that make up a row, shall not exceed the num-ber provided for in Table S.4-4 as a function of the width of the passage between theseat rows and the possibility for occupants to move toward one or two exit directionsfrom the sector.Width of the passagebetween the seat rows [mm]Maximum number of seats per rowPassage between one-wayrowsPassage between two-wayrowsL < 30012300 ≤ L < 325714325 ≤ L < 350816350 ≤ L < 375918375 ≤ L < 4001020400 ≤ L < 4251122425 ≤ L < 4501224450 ≤ L < 4751226475 ≤ L < 5001228L ≥ 50012Limited by the length of the es-cape routeTable S.4-4: Maximum number of fixed seats per row in a sectorG.7.5.10.2Portable seats1.Each sector must be made up of no more than 10 rows of portable seats rigidly con-nected together by row.2.The number of portable seats that make up a row shall not exceed the number pro-vided for in Table S.4-5 as a function of the possibility for occupants to move towardone or two exit directions from the sector.Maximum number of seats per rowFor one-way exitFor two-way exit510Table S.4-5: Maximum number of portable seats per row in a sector3.The width of the passage between rows of seats cannot be less than 300 mm.4.The use of portable seats not rigidly connected to one another in areas of the activitywhere it has been demonstrated that the presence of portable seating does not obstructsafe escape of the occupants is permitted (e.g. low crowding rooms, restaurants, the-atre balcony seats, ...).G.7.6Input data for escape system design1.The design of the escape route system depends on the input data for each compart-ment specified in Sections 7 and 8.G.7.6.1The reference Rliferisk profile1.Each component of the escape system shall be sized as a function of the Rliferisk pro-file worst case for escape purposesfor the compartments served.Chapter S.4 Escapev130Page S.4-7
G.7.6.2Crowding1.Crowding of each compartment shall be determined by multiplying the crowding den-sity by the gross surface area of the compartment. Crowding density is derived by:a.data or criteria from Table S.4-6;b.indication of the vertical technical regulation.References to technical standards or documents issued by internationally recognisedbodies in the fire-safety industry are permitted.2.The activity manager may declare a crowding value that is less than what has been de-termined or as provided for by paragraph 8.3.The manager undertakes to comply with the activity's maximum declared crowding orcrowd density values for each space and under all operational conditions.Type of activityCrowd density or criteriaPublic places of entertainment without seating1.2 persons/m2Areas for temporary shows, expositions, or different entertainmentvenuesAreas set up for food service0.7 persons/m2Areas set up for scholastic activities and laboratories (without seating)0.4 persons/m2Waiting roomsOffices open to the publicSales areas for small retail outlets with food or mixed sectors

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