Can people walk on stairs in construction?

The stairs of the project under construction can not be walked, in a project, the most important thing is safety, the stairs of the project under construction, some of them do not even have handrails, there are serious safety hazards.

No, construction projects are unfinished projects, the risk factor is relatively high, and it is easy to get injured by accidents, so you should try to avoid taking stairs.

There are cast-in-place stairs in the building, especially in high-rise buildings, so how long can you walk after the pouring is completed, and the students who can walk on the site may know that if it is half of the summer 3-5 hours later, you can leave after 10 hours in the winter, because the low temperature is a little longer for the final setting time of the concrete, in summary, the most important thing is the ambient temperature after the pouring is completed, and the concrete strength grade is intertwined with comprehensive factors such as admixtures.

Ordinary people can't go, and the relevant management personnel and construction personnel of the project can go, but they also have to do a good job of safety protection in accordance with the relevant requirements before they can go.

It belongs to the building decoration and decoration division project.

Third, no matter how hot the water is, it will still be cold, no matter how full of enthusiasm it is, it will still fade, and the person you love may leave, so you have to grow up obediently, no longer open your mouth is the future of the future, but get used to people walking tea and cooling. 2. Don't complain to anyone, because 20 people don't care, and the remaining 80 people will be happy to hear it. Set the right mentality, be gentle and follow yourself, life is to cry to yourself and laugh to others!

The width of the stairs is 50 cm, and people can walk. It is used as a component for vertical transportation between floors in buildings. It is used for transportation links between floors and when there is a large difference in height.

Stairs are also required in multi-storey and high-rise buildings with elevators and escalators as the main means of vertical transportation. Although high-rise buildings use elevators as the main means of vertical transportation, stairs should still be reserved for escape in the event of a fire.

Staircase composition1. The number of steps on each staircase shall not exceed 18 steps and shall not be less than 3 steps.

2. The staircase platform is divided into a floor platform and an intermediate platform according to its location.

3. The railing (railing) and the handrail railing (handrail) are the enclosure components arranged on the airside of the staircase and the platform, which should have a certain strength and rigidity, and should be provided with handrails for people to support in the upper part. A handrail is a continuous accessory located at the top of a railing for people to lean on up and down stairs.

4. The starting column at the beginning of the staircase railing of the general column is generally one size larger than the large column.

5. At the corner of the railing of the large column, undertake two handrails or make a large column with handrails at the end.

6. The lower panel on the pedal staircase is generally 38mm as a whole, and 30mm thick on the cement ladder.

Under normal circumstances, as the main return to the passage of the staircase, its flight width leakage chain beat should meet at least two people relative traffic (i.e., not less than two strands**). Considering per share**, it is 1100 1400mm when the double call loses the pass. We generally take 1100mm.

The national "Mandatory Provisions on Engineering Construction" stipulates: "The net width of the staircase for the main traffic of the day shall be determined according to the characteristics of the building, generally according to the width of each share ** 55 (the number of shares of the module section 0 shall be determined, and shall not be less than two shares**". In this way, the width of the staircase should be between 1 meter 1 and 1 meter 4, and the minimum should not be less than 1 meter 1

Code for Fire Protection Design of High-rise Civil Buildings

GB50045 95 (2005 Edition) Mountain Oak The total width of each floor of the evacuation staircase should be calculated according to the number of people passing through every 100 people not less than the old calculation, when the number of people on each floor is not equal, its total width can be calculated in sections, and the total width of the lower evacuation staircase should be calculated according to the one floor with the largest number of people on the upper floor. The minimum net lift width of the evacuation staircase should not be less than the provisions of the table. Minimum clear width of evacuation staircase (m) Minimum clear width of evacuation staircase for high-rise buildings, hospital buildings, residential buildings, and other buildings.

The high-rise fire safety emergency passage should never leave casually, and should be cleared and strictly controlled.

High-rise fire safety emergency passage, that is, the stairs of high-rise buildings, can usually walk casually.

No, it's usually on the right.

Evacuation stairs refer to indoor stairs and outdoor stairs that can be used as vertical passages in the event of a fire. Public buildings.

Stairwells should be provided for indoor evacuation staircases. When a fire occurs, ordinary elevators will generally stop running due to power supply interruption if effective fire and smoke prevention measures are not taken. At this point, the staircase becomes the main vertical evacuation facility.

It is an evacuation route for the people in the building, an ambulance route for the injured or the elderly, sick and disabled, and possibly firefighters.

The offensive line of firefighting shows the importance of its role.

The quality of the fire performance of the stairwell and the size of the evacuation capacity directly affect the life safety of personnel and the fire brigade.

If there are no smoke prevention measures, fireworks will crowd into the fire, which can not only cause spread, increase personnel, but also seriously hinder firefighting.

Basic Requirements: 1. The evacuation staircase must have good smoke-proof and fire-proof effects. The interior walls of the antechamber of smoke-proof stairwells and enclosed stairwells should not be opened with doors and windows leading to other rooms except for evacuation doors leading to public walkways on the same floor; Moreover, the wall itself should have good fire resistance, and the fire resistance limit should be more than 2h.

2. Create favorable conditions for safe evacuation. Except for access to the refuge floor.

Outside the dislocated staircase, the position of the stairwell on each floor should not be changed, the evacuation staircase should lead directly to the flat roof, up and down directly, and there should be a separation facility between the first floor and the basement and there should be a direct exit to the outside.

When it is necessary, the plane angle formed by the upper and lower levels of the tread shall not exceed 10°, and the tread depth at 25cm from the handrail shall not be less than 22cm; There should be natural lighting and ventilation in the stairwell, and there should be no protrusions that affect evacuation. The horizontal clear distance between the two sections of the evacuation staircase of public buildings should not be less than 15cm.

3. The stairwell and its front room should not be equipped with boiling water room, combustible material storage room, non-enclosed elevator shaft, combustible gas pipeline, Class A, B and C liquid pipelines, etc.; If the combustible gas pipeline in the residence must pass through the stairwell horizontally in a local area, reliable protection facilities should be taken.

1. Arrange evacuation routes reasonably.

The so-called reasonable safe evacuation route refers to the increasingly safe emergency evacuation route in the event of a fire. That is to say, people should run from the burning room or part to the public walkway, and then from the public walkway to the evacuation stairwell, and then from the evacuation stairwell to the outside or other safe places, step by step safer, without "counter-flow and infiltration".

2. The number of evacuation stairs should be sufficient and the location should be appropriate.

In order to ensure that people can evacuate smoothly in the event of a fire, high-rise buildings should be equipped with at least two evacuation ladders, and located in two different directions, preferably on both sides of the standard floor of the main building or the old school of fire prevention. This is because people tend to rush to familiar stairs or exits during a fire, but if they encounter smoke and fireworks, they will turn around and find a way out, and it is not safe to have only one evacuation route. The two evacuation stairs are too concentrated and not conducive to evacuation.

3. Evacuation sequence.

The evacuation sequence refers to which part of the people are evacuated first and which part of the people are evacuated later. This is the first thing to consider when developing an evacuation plan. The general principle is to evacuate the fire floor first, then the floor above the fire floor, and finally the floor below the fire floor.

4. Evacuation routes.

The evacuation route should be the closest route to the safety exit and evacuation staircase, and generally evacuate in the direction indicated by the evacuation indication sign. However, if it is a fire layer, the location of the fire should be considered. People in rooms near the burning room should evacuate in the opposite direction of the fire.

Vertical evacuation generally considers evacuation to the ground first, because evacuation to the ground is the safest. However, it is also necessary to take into account that if the vertical passage is blocked, it can also be evacuated to the roof. For high-rise buildings with evacuation rooms and refuge floors, consider evacuating to evacuation rooms and refuge floors.

5. Evacuation command.

The entire evacuation process must be carried out under unified command and in accordance with the predetermined order and route, otherwise, it may cause chaos and affect the evacuation. The commander-in-chief shall be in the fire control room, and there shall be on-site commanders (or guides) on each floor or fire prevention zone. The on-site commander should promptly report the evacuation situation to the commander-in-chief.

6. Avoid setting up bag-shaped walkways.

The Achilles' heel of the pocket walkway is that there is only one evacuation route (or exit). In the event of a fire, once this exit is sealed by fire, the person who is in this part.

No, this is advisable to set, but it is not mandatory, many of the 18 floors below 54 meters are not, all of them are tower cranes.

The evacuation passage is passable, and before it was not allowed to stack things in Chapter 60 of the Fire Protection Law

3) Occupying, blocking, or closing evacuation passages or safety exits, or engaging in other conduct that impedes safe evacuation;

4) Burying, occupying, or blocking fire hydrants or occupying fire spacing;

5) occupying, blocking, or closing the passage of fire trucks, obstructing the passage of fire trucks;

6) Placing obstacles on doors and windows that affect escape and fire fighting and rescue in crowded places.

Code for Fire Protection Design of Buildings:

A safety exit is a stairwell for the safe evacuation of personnel, an entrance to an outdoor staircase, or an exit leading directly to an indoor and outdoor safe area.

Evacuation passage refers to the passage used for evacuation of personnel in the event of a fire, including indoor and outdoor walkways, stairs, hall aisles, etc.

OK. But it can't be blocked by piles.

3) Occupying, blocking, or closing evacuation passages or safety exits, or engaging in other conduct that impedes safe evacuation;

4) Burying, occupying, or blocking fire hydrants or occupying fire spacing;

5) occupying, blocking, or closing the passage of fire trucks, obstructing the passage of fire trucks;

Looking specifically at local regulations, most of them are not used, and the safety of the wooden ladder customized by the first person is not ***, and the firmness is unstable. Second, wooden ladders are prone to fire.

There should be no limit to this, but you should pay attention to safety on the construction site, especially when working at height, so as long as the ladder can be used.

We don't allow wooden ladders to be used at our construction site. Once a wood sample is found, it will be fined by the safety supervision department.

I'm in engineering, there's no limit, but wooden ladders can be easily broken.

The disadvantage of the wooden ladder is that it is low and leads to the market break of the aluminum ladder, and the wooden ladder is too convenient to walk, and the speed is too fast to cause construction errors. The long wooden ladder can also be sawed short, and the short one can be long, and the aluminum ladder is a good restriction on the operation of Tianxiu.

The advantage of aluminum ladders is that it is inconvenient to walk, and if you are more likely to fall while walking, you can get paid leave. And easy to conduct, after a few days of friction the black shell of the foot can wear through the conductive, the construction process has a high probability of pressing the cable on the ground, electrodyosis can get a lot of pension.

"Technical Code for Safety of Work at Height in Building Construction" portable ladders should be made of metal materials or wood. It is strictly forbidden to erect a pattern operation on the scaffolding operation layer.