Introduction

1. a large shopping mall, 6 floors above ground, the original design for the department store, catering functions, calculated that the first floor of the outer door of the evacuation of the total net width of at least 18.0m, now due to sudden changes, the function is changed to building materials shopping malls, the first floor of the outer door of the evacuation of the total net width of at least ( )m.

A. 3.6 B.5.4 C.6.0 D.36.2

2. A secondary school teaching building of fire-resistant level 2, *** 4 floors, using the internal aisle double-sided cloth room. The fire design review, the school building is not set up automatic fire extinguishing system, the school building in the north and south ends of the school building, respectively, there is an evacuation staircase using open stairwells: each floor of the school building are 12 classrooms, each classroom floor area are 120 square meters. Any classroom evacuation door in the building to the nearest safety exit distance should not be greater than ( )m.

A.35 B.33 C.30 D.22

3. a vehicle assembly plant, fire-resistant class III, 3 floors on the ground, the height of the floor is 4m, each floor floor area of 1,200m, the first floor, the second floor of the number of people up to 120, the number of people up to 80, all set up automatic sprinkler system, the first floor, the first floor of the first two floors, the second floor of the second floor of the maximum number of 120, three floors of the maximum number of 80. The maximum number of occupants on the first and second floors is 120, and the maximum number of occupants on the third floor is 80. The following practice on the safety evacuation of the plant, the error is ( ).

A. Set up a closed stairwell, stairwell door using two-way spring door

B. The width of the evacuation aisle in the plant's three floors is 1.1m

C. The first floor has two evacuation of the outer door with a net width of 1.2m

D. The furthest point from the nearest safety exit on each floor is a straight-line distance of 40m

4. A building height of 25m, the school building, in the case of a building on the side of a building with a high ceiling, a building with a high ceiling, a school building, the school building, the school building, the school building, the school building, the school building, a school building. A school building with a height of 25m has evacuation stairwells on both sides of the outer wall. According to the national engineering fire construction standards set up fire hydrants and automatic sprinkler systems and other fire facilities and equipment. The following fire design of the evacuation aisle in the building does not meet the requirements of the code ( ).

A. cast-in-place reinforced concrete floor slabs, with a fire resistance limit of 1.00h

B. evacuation aisles using light steel keel fiber gypsum board ceiling, with a fire resistance limit of 0.25h

C. classroom evacuation door to the nearest exit of the most unfavorable straight-line distance of 40m

D. evacuation stairwells using closed stairwells

5. The following is incorrect about the design of the evacuation aisle ( ).

A. The door to the front room of the refuge aisle in the fire protection partition adopts Class A fire door, and the door to the refuge aisle in the front room adopts Class B fire door

B. In one of the fire protection partitions, the distance between the door to the refuge aisle and the nearest exit of the refuge aisle to the ground is 35m

C. The combustion level of the decoration material of the roof and wall of the refuge aisle is Class A, and the decoration materials not lower than Class B1 are used on the ground. No less than B1 level decoration materials

D. The fire-resistance limit of the fire partition wall of the refuge aisle is 3.00h, and the fire-resistance limit of the floor slab is 2.00h

Reference Answer and Analysis

1.Answer B. Analysis: According to the "Code for Fire Protection of Building Design" (2018 version) GB50016- According to Article 5.5.21 of the Building Design and Fire Protection Code (2018 Edition) GB50016-2014, after changing to furniture and building materials shopping mall, the density of people becomes 30% of the original density of people, that is, the minimum total net width of evacuation also becomes 30% of the original width, so 18.0?0.3=5.4m.

2.Answer C. Anatomy: According to Article 5.5.17 of Building Design and Fire Protection Code (2018 Edition) GB 50016-2014, one or two fire-resistant class fire-resistant class fire-resisting malls have a total net width of 18.0.0.3 = 5.4 m.

2. The straight line distance from the evacuation door to the nearest safety exit of the room with a straight evacuation aisle to the nearest open stairwell, when the room is located between the two stairwells, should be less than 5m according to this table. in addition, it should be noted that the inner aisle suggests that the building is not an open exterior corridor. Therefore, the answer should be 35-5=30m.

3. Answer B. Explanation: according to the "building design fire code" GB50016.2014 (2018 edition) 3.7.6, high-rise plant and A, B, C multi-storey plant evacuation staircase should be used to close the stairwells or outdoor staircase; according to 6.4.2.3, high-rise buildings, densely populated public **** building, densely populated multi-storey C building, the building should be closed to the public. According to 6.4.2.3, high-rise buildings, densely populated public **** building, multi-storey class C plant, class A and B plant, the door of the closed stairwell should be class B fire door, and should be opened to the direction of evacuation; other buildings, can be used in the two-way spring door, option A is correct; according to 3.7.5, the evacuation of the plant staircase, aisle, the door of their respective total net width should be determined according to the calculations, but the evacuation staircase should not be less than the minimum net width of 1.10m, evacuation of the minimum net width of 1.10m, the evacuation of the aisle The minimum net width of the evacuation staircase should not be less than 1.10m, the minimum net width of the evacuation aisle should not be less than 1.40m, and the minimum net width of the door should not be less than 0.90m. When the number of evacuees on each floor is not equal, the total net width of the evacuation staircase should be calculated in layers, and the total net width of the staircase should be calculated on the basis of the total net width of the floor. The total net width of the lower staircase should be calculated according to the number of evacuees of the layer and the number of evacuees of the layer above. The total net width of the first floor exterior door should be calculated according to the number of evacuees on the floor and above the maximum number of evacuees, and the minimum net width of the door should not be less than 1.20m, the first floor of the plant required minimum evacuation of the total net width of 120 ?0.8/100=0.96m, the first floor evacuation of the total width of 2?.2=2.4m, and each door to meet the requirements of the net width of the small, the B option is wrong, the C option is correct; according to the Table 3.7.4, three fire-resistant grade multi-storey class E plant at any point to the nearest safety exit straight line distance should not be greater than 75m, D option is correct.

4. Answer C. Analysis: high-rise teaching building is located between the two safety exits of the evacuation door to the nearest safety exit straight-line distance of the maximum of 30m, when the building is fully equipped with automatic sprinkler system, the safety evacuation distance can be increased by 25%, that is, 37.5m.

5. Answer C. Explanation: According to the "Building Design and Fire Protection Code" 6.4.14 Evacuation aisle should be set up in accordance with the following provisions:

1 The fire-resistant limit of the fire partition wall of the evacuation aisle should not be less than 3.00h, and the fire-resistant limit of the floor slab should not be less than 1.50h.

2 The exit of the evacuation aisle through the ground should not be less than 2 and should be set up in different directions; when the evacuation aisle is only connected with a fire protection partition and there is at least 1 safety exit of the fire protection partition which is directly outside, there can be 1 safety exit. When the refuge walkway is only connected with a fire partition and the fire partition has at least 1 outlet directly to the outdoor safety exit, 1 outlet directly to the ground can be provided.

3 The net width of the refuge aisle should not be less than the total designed evacuation net width of the refuge aisle leading to any fire protection zone.

4 The combustion performance of the interior decoration materials of the refuge aisle should be A level.

5 fire partition to the entrance to the refuge aisle should be set up smoke front room, the use of the front room area should not be less than 6.0m?, open the door to the front room should be used Class A fire door, the front room to the door to the refuge aisle should be used Class B fire door.

6 refuge aisle should be set up in the fire hydrant, fire emergency lighting, emergency broadcasting and fire telephone line.