by Without / without / permission / permission, do not / get / transfer / load.
Violators / will / investigate the dike of a thousand miles begins with a single step.
The setting of fire-fighting facilities shall be required according to the height and function of the building, and the height and function of the building limit the fire resistance rating of the building, because the fire resistance rating of the building is determined according to the combustion performance and fire resistance limit of building components.
Therefore, the fire resistance limit can not be bypassed, and there are too many numbers.
How to adjust it? Ship recommendation form comparison, understanding and memory.
I don’t know if you found out? The two troublesome forms of industry and civil use are actually different.
Too lazy to find it? It doesn’t matter ~ Lao Han helped you sort it out (click to enlarge the picture) (click to enlarge the picture) after reading the difference, still can’t remember? I’m going to make a big move (dry goods).
Don’t be frightened.
It’s just so rough (the following rules apply to the combustion performance and fire resistance limit of industrial and civil components).
1.
Primary components are non combustible.
2.
Secondary components are non combustible (the ceiling is flame-retardant) 3.
Grade III and IV follow suit.
4.
Civil use is generally lower than industry (non load-bearing exterior wall is so different).
5.
Reference memory sequence: firewall load-bearing wall column beam floor (roof, stairs) – ceiling – other walls | reasons: 1) the firewall is important, and the numbers are rough.
2) the first, second and third levels of load-bearing walls, columns and beams are equal difference series.
3) the first, second and third levels of floors, roofs and stairs are copied numbers.
4) the ceiling is so small that the second level is self willed and difficult to burn.
The more different it is, the better it is remembered.
5) stairs Room and front room wall, elevator shaft wall, unit wall and household wall.
The first and second levels are the standard number 2.00.
6) Evacuation walkway wall and non load-bearing exterior wall, civil grade I and II is 1.00.
7) The partition wall of the room has lasted less than an hour at the first level.
8) The figures in the table are the lowest values, which can be higher than the provisions and not lower than the provisions.
9) Remember 1 number for each category, and others by analogy.
These two tables are just 7 numbers! After understanding the relationship between components, Numbers can remember 1 (3.00), 1 (2.00), 1 (1.50), everything else can be inferred.
Remember when you push it out, and give up when you can’t.
6.
Close! Remember – 3.00 for firewall, load-bearing wall and column – 2.00 for beam – 1.50 for floor slab, roof and staircase – 0.25 for ceiling – 2.00 for stairs, front room, elevator shaft, unit and household wall – 1.00 for other walls, 1.00 for both levels – room wall, the most special 0.00 75 If you only talk but don’t practice fake moves, the crazy devil is coming The combustion performance of the following building components is non combustible, Among them, the fire resistance limit that does not meet the requirements of class II fire resistance rating is ().
A.
the fire resistance limit of load-bearing components on the roof of the plant is 1.50h; B.
the fire resistance limit of load-bearing wall of residential building is 2.50h; C.
The fire resistance limit of multi-storey warehouse column is 2.00h; D.
the fire resistance limit of ceiling of office building is 0.25h [click the blank space below to see the answer] analysis: C.
when the fire resistance rating of roof bearing components of industrial buildings is grade II, the fire resistance limit is not less than 1.00h, and option a is 1.50h, which meets the requirements; when the fire resistance rating of columns of industrial buildings is grade II, the fire resistance limit is not less than 2.50h, and option C is 2.00h, which does not meet the requirements; when the fire resistance rating of bearing walls of civil buildings is grade II, the fire resistance limit is not less than 2.50h, and option B is selected Item 2.50h meets the requirements; When the fire resistance rating of civil building ceiling is grade II, the fire resistance limit shall not be less than 0.25h, and option D 0.25h meets the requirements.
The answer to this question is C.
2.
A food processing plant, with a building height of 20m and a fire resistance rating of class I, The fire resistance limit of building components in the following options does not meet the requirements is ().
A.
the fire resistance limit of beam is 1.50h B.
the fire resistance limit of firewall is 3.00hc.
The fire resistance limit of staircase wall is 2.00hd.
The fire resistance limit of evacuation staircase is 1.50h [click the blank space below to see the answer] analysis: A.
for industrial buildings with class I fire resistance rating, the fire resistance limit of beams is not less than 2.00h, option a does not meet the requirements; the fire resistance limit of firewall is not less than 3.00h, option B meets the requirements; the fire resistance limit of staircase wall is not less than 2.00h, option C meets the requirements; the fire resistance limit of evacuation stairs is not less than 1.50h, and option D meets the requirements.
This question The answer is a.
Seek; When the fire resistance rating of civil building ceiling is grade II, the fire resistance limit shall not be less than 0.25h, and option D 0.25h meets the requirements.
The answer to this question is C.
3.
An independently built elderly care facility with a building height of 25m.
The following statement about the fire resistance limit of each component of the building, What is correct is (a) the fire resistance of the bearing wall shall not be less than 2.50h.
B.
the fire resistance of the partition walls on both sides of the evacuation walkway shall not be less than 1.00h.
The fire resistance of the column shall not be less than 2.00hd.
The fire resistance of the floor slab shall not be less than 1.00h [click the blank space below to see the answer] analysis: B.
The 25m high elderly care facilities independently built are class I high-rise public buildings with fire resistance rating of no less than class I, and the fire resistance limit of load-bearing wall shall not be less than 3.00h, option a is wrong; the fire resistance limit of partition walls on both sides of evacuation walkway shall not be less than 1.00h, option B is correct; the fire resistance limit of columns shall not be less than 3.00h, option C is wrong; The fire resistance limit of the floor shall not be less than 1.50h, and option D is wrong.
The answer to this question is B.
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