by Without/without/permission/permission/permission, without/getting/transferring/loading, violating/violating/will/will/will/will/will/will be investigated for a thousand miles of embankment, starting with one step.
The setting of fire protection facilities should be based on the height and function of the building, which limits the fire resistance rating of the building, because the fire resistance rating of the building is determined by the combustion performance and fire resistance limit of the building components.
Therefore, the fire resistance limit cannot be bypassed.
What if there are too many numbers? Compare the ship recommendation form with the understanding memory.
I wonder if you have found it? The two troublesome forms of industry and civil use are actually different.
Don’t bother to find it? Don’t worry~Old Han has sorted it out for you (click to enlarge the picture) (click to enlarge the picture).
After reading the difference, can’t you remember? I’m going to make a big move (dry goods).
Don’t be surprised.
It’s just so rude (the following rules apply to the combustion performance and fire resistance limit of industrial and civil components).
1.
The primary components are all incombustible.
2.
The secondary components are all incombustible (the ceiling is incombustible).
3.
The third and fourth levels are coincident.
4.
The civil use is generally lower than the industrial use (the non-bearing exterior wall is so different).
5 Reference memory order: firewall – load-bearing wall – column – beam – floor (roof, stairs) – ceiling – other walls | Reason: 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) Floors, roofs, stairs, and civil level 1, 2, and 3 are copied numbers.
4) The ceiling is so hot that the second level is capricious and difficult to burn.
The more distinctive it is, the better it is remembered.
5) Staircase 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 are 1.00 for civil use.
7) The partition of the room is less than 1 hour at the first level.
8) The figures in the table are the minimum values, which can be higher than the specified value, but not lower than the specified value.
9) Remember 1 number for each category.
By analogy, these two tables are just 7 numbers! After understanding the relationship between components, you can remember 1 number (3.00), 1 number (2.00), 1 number (1.50), and everything else can be reasoned.
If you push it out, you can remember it.
If you can’t push it out, you can give up 6! Remember – 3.00 for firewalls, load-bearing walls, and columns – 2.00 for beams – 1.50 for floors, roofs, and stairs – 0.25 for ceilings – 2.00 for stairs, front rooms, elevator shafts, units, and household walls at the first and second levels – 1.00 for other walls, and 1.00 for the first and second levels – room walls, the most special 0.75 is just saying and not practicing fake tricks, and the craze is coming.
1.
The combustion performance of the following building components is incombustible, Where the fire resistance limit does not meet the requirements of Class II fire resistance rating is ().
A.
The fire endurance of the roof load-bearing component of the plant is 1.50h.
The fire endurance of the bearing wall of the residential building is 2.50h.
The fire endurance of the multi-storey warehouse column is 2.00h.
The fire endurance of the ceiling of the office building is 0.25h [click the blank below to see the answer] Analysis: C, when the fire endurance of the roof load-bearing component of the industrial building is Class II, the fire endurance is not less than 1.00h, and option A 1.50h meets the requirements; When the fire resistance rating of industrial building column is Class 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 the bearing wall of civil buildings is Class II, the fire resistance limit shall not be less than 2.50h, and option B 2.50h meets the requirements; When the fire resistance rating of the ceiling of civil buildings is Class II, the fire resistance limit is not less than 0.25h, and option D is 0.25h, which meets the requirements.
The answer to this question is C.
2.
A food processing plant has a building height of 20m and a fire resistance rating of Grade I.
The fire resistance limit of building components in the following options does not meet the requirements ().
A.
The fire resistance limit of the beam is 1.50h.
The fire resistance limit of the firewall is 3.00h.
The fire resistance limit of the stairwell wall is 2.00h.
The fire resistance limit of the evacuation staircase is 1.50h [click the blank below to see the answer] Analysis: A, the fire resistance limit of the beam of the industrial building with Class I fire resistance rating is not less than 2.00h, and option A does not meet the requirements; The fire endurance of the firewall shall not be less than 3.00h, and option B shall meet the requirements; The fire endurance of the staircase wall shall not be less than 2.00h, and option C shall meet the requirements; The fire endurance of evacuation stairs shall not be less than 1.50h, and option D shall meet the requirements.
The answer to this question is A.
Ask for; When the fire resistance rating of the ceiling of civil buildings is Class II, the fire resistance limit is not less than 0.25h, and option D is 0.25h, which meets the requirements.
The answer to this question is C.
3.
The building height of an independently built elderly care facility is 25m.
The following statement about the fire resistance limit of each component of the building is correct: () A.
The fire resistance limit of the load-bearing wall should not be less than 2.50h.
The fire resistance limit of the partition wall on both sides of the evacuation aisle should not be less than 1.00h.
The fire resistance limit of the column should not be less than 2.00h.
The fire resistance limit of the floor should not be less than 1.00h [click the blank below to see the answer] Resolution: B, The 25m-high elderly care facility built independently is a class I high-rise public building with a fire resistance rating of not less than Level 1, and the fire resistance limit of the load-bearing wall should not be less than 3.00h.
Option A is wrong; The fire endurance of the partition walls on both sides of the evacuation walkway shall not be less than 1.00h, and option B is correct; The fire endurance of the column shall not be less than 3.00h, and option C is wrong; The fire resistance limit of the floor should not be less than 1.50h, and option D is wrong.
The answer to this question is B.
.
