At least how many square meters of outdoor large-scale advertising, ah, more than 10 square meters outside the store, 20 square meters is large?
Author:Wu Yiping Time:2021-10-01 08:05 Browse(653)
20 square meters is not a large advertisement. If you look at the T-shaped billboard on the roadside of the expressway, it has about 100 square meters.
20 square meters is not a big advertisement. Look at the T-shaped billboard on the roadside of the highway, It has about 100 square meters.
the so-called work at height refers to the work carried out at a certain position as the benchmark.
the national standard gb3608-93 "classification of work at height" stipulates: "all work at a height 2m above the falling height datum plane (including 2m) is called work at height.

At least how many square meters of outdoor large-scale advertising, ah, more than 10 square meters outside the store, 20 square meters is large?

" according to this regulation, work at height is involved in the construction industry The scope is quite wide.
when working in the building.
if the operation is carried out on the shelf more than 2m, it is the work at height.


1. In order to facilitate the prevention work in the process of operation.
effectively prevent the accidents of people and objects falling from height, according to the characteristics of the construction industry, in the construction and installation engineering construction, the, As long as the above conditions are met, the construction of various types of openings and edge operations, suspended and climbing operations, operating platforms and grade separation operations within the structural scope of buildings and structures, as well as all kinds of holes, pits, ditches, troughs and other projects on the site outside the main structure and beside the passageways, shall be treated as high-altitude operations and protected.
2 Scaffold, derrick, gantry, construction elevator and all kinds of hoisting machinery and equipment are used in the construction of high-altitude operation.
the safety problems are all dealt with by the safety technical departments of each project or equipment according to their own regulations.
3, The ground may be uneven.
the falling height datum plane mentioned in the above standards refers to the horizontal plane passing through the lowest falling point.
the lowest falling point refers to the horizontal plane passing through the lowest falling point,It can be regarded as the maximum falling height.
therefore,
the height of work at height is measured by the maximum vertical distance from each working position to the corresponding falling datum plane.

work at height
work at height in building construction mainly includes edge work, hole work, climbing, hanging work, etc These types of work at height are the main places where casualty accidents may occur.

edge work
edge work refers to the work at height when there are no enclosure facilities at the edge of working face or the height of enclosure facilities is less than 80cm in the construction site.
the following working conditions belong to edge work: 1
unprotected balcony, material platform and cantilever platform around the foundation pit; 2. Unprotected floor and surrounding floor; 3. Unprotected stairways and stairways; 4. Two sides of the passage for derrick, construction elevator and scaffold, etc; 5. All kinds of vertical transportation and unloading platform.

opening operation refers to the operation beside the hole and hole. The hole whose short edge is less than 25cm (greater than 2.5cm) on the horizontal floor, roof, platform, etc. is called hole.
the hole whose short edge is equal to or greater than 25cm is called hole.
the hole whose height is less than 75cm is called hole, The height is equal to or greater than 75cm, and the width is greater than 45cm, which is called hole.
the high-altitude operation on the edge of pile hole, manhole, groove and pipe with the depth of 2m or more belongs to hole operation.
stairs, elevators and reserved holes for equipment installation of buildings (without formal railings).
the height of the hole is equal to or greater than 75cm, and the width is greater than 45cmThere are also some reserved feeding openings, passage openings, construction openings, etc.
when the openings are more than 2.5cm.
if there is no protection at the openings, there is a risk that the operators will fall from height; Or if the objects fall from these holes, it may also cause the following people to strike the objects.
work at height
climbing operation
climbing operation refers to: work at height with the help of climbing facilities on building structure or scaffold or with ladders or other climbing facilities under climbing conditions.
scaffold erection and dismantling around buildings Hanging safety net.
installation and removal of tower crane, gantry, grillage, construction elevator, pile frame, climbing and installation of steel structural members all belong to this kind of operation.
when climbing, the operators have no operation platform.
they can only climb on the shelves with the aid of objects, and they need to use one hand climbing, one foot hook or waist rope to keep balance, and the vertical line of body gravity center does not pass under their feet, The operation is difficult and dangerous, and it may fall if it is not careful.

suspended operation refers to the high-altitude operation in the surrounding free state.
it is characterized by the high-altitude operation in the condition that the operator has no foothold or firm foothold.
component hoisting in building construction.
external decoration, cantilever or suspended beam and slab, etc The formwork erection and dismantling, steel bar binding, concrete pouring and other operations in special parts such as awning are all suspended operations, which are very dangerous due to the unstable construction conditions.

cross operation
cross operation refers to the high-altitude operation at different levels of the construction site.
in the state of space penetration.
cross operation refers to the high-altitude operation at the same timeScaffolding on the upper part of the construction site, lifting materials, personnel on the ground handling materials, making steel bars.
or plastering under the exterior wall decoration, surface decoration on the upper part, etc., are all cross operations on the construction site.
in cross operations.
if the materials are accidentally touched, tools are dropped or lifting objects are scattered, the workers below may be hit, According to the objective requirements of safety management,
in order to change the abnormal behavior of people, the abnormal state of objects, and the abnormal combination of people and objects, the movement law of safety and accidents and the law of prevention and control of accidents are used to effectively prevent and control the falling accidents from height in advance Control and comprehensive prevention and control.

specific prevention and control of falling accidents.
based on the specific causes of different types of falling accidents, specific prevention and control points of each type of falling accidents are proposed.
(1) prevention and control of falling accidents at the entrance Key points of control: the prevention openings, passageways, stairways, elevators and feeding platforms must be equipped with solid and effective safety protection facilities (cover plate, fence and safety net); If the protective facilities at the entrance are damaged, they must be repaired in time; It is forbidden to move or dismantle the protective facilities at the entrance without permission; Be careful when working near the hole.
do not work with your back to the hole; Do not rest, fight or cross the hole or walk on the cover plate of the hole; At the same time, eye-catching warning signs must be hung at the entrance.
(2) prevention and control points of falling accidents on scaffold; Scaffold should be set up and scaffold board should be paved according to the regulations.
the scaffold should be set up according to the regulationsNo probe board is allowed; The protective railings should be bound firmly and hung with safety net; Scaffold load shall not exceed 270Kg / m2; If the scaffold is too wide from the wall, safety protection shall be provided; (3) prevention and control points of falling accidents in suspended work at height: strengthen the construction plan and the cooperation of various construction units and types of work.
make full use of scaffolding and other safety facilities to avoid or reduce suspended work at height; Operators should be more careful to avoid excessive force and instability; Workers working at height must wear soft soled antiskid shoes and use safety belt correctly; (4) prevention and control points of roof cornice falling accident: workers working on the roof should wear soft soled anti-skid shoes; Anti skid measures should be taken when the roof slope is greater than 25 degrees; When working on the roof, it is not allowed to move away from the cornice; The external scaffold shall be used for construction.
the external vertical poles shall be 1.2m higher than the cornice, and the safety net shall be hung. The external scaffold of the cornice shall be covered with scaffold board; The safety net should be set under the eaves when the external scaffold is not used.

comprehensive prevention and control of falling accidents.
comprehensive prevention and control of falling accidents are proposed according to the different types and series of causes of falling accidents The main points of control.
(1) to carry out regular safety publicity and education and safety technology training for personnel engaged in work at height.
to make them understand and master the law and hazards of falling accidents, firmly establish safety ideas and have the ability to prevent and control accidents, and strictly implement safety laws and regulations,(2) the physical conditions of the workers working at height should meet the safety requirements.
for example, those who are not suitable for working at height should not have hypertension, heart disease, anemia, epilepsy, etc, Working at height; Stop working at heights for personnel with excessive fatigue, low spirit and low mood; It is strictly forbidden to engage in work at height after drinking.
(3) the personal dress of workers working at height shall meet the safety requirements.
for example,
safety helmet, safety belt and relevant labor protection articles shall be provided according to the actual needs; It is not allowed to wear high-heeled shoes, slippers or work barefoot; If the work is suspended in the air, wear soft soled anti-skid shoes.
it is not allowed to climb the scaffold or use the scaffold basket for transporting materials.
it is also not allowed to jump up and down from the height.
(4) all kinds of scaffolds should be erected according to the requirements.
for example,
when the height of the scaffold is more than 3m, each layer should be bound with two body protectors, and a foot board should be set up, It is not allowed to leave probe board.
when using bridge scaffold.
pay special attention to whether the bridge pile and the wall are firmly pulled and upright.
when lifting and lowering the bridge.
safety ropes should be hung, And keep both ends of the bridge lifting at the same time.
the workers who lift the bridge.
should hang the safety belt on the column of the bridge.
the sling tools for lifting the bridge should comply with the design standards and safety regulations.
when using the hanging basket and hanging frame.
the sling must be firm.
when using the hanging basket or hanging frame.
the safety rope or safety fixture should be hung well.
when using the hanging basket or hanging frameWhen lifting the hanging basket.
the safety rope shall be adjusted with the lifting, and shall not be removed.
both sides and the outside of the hanging basket frame and the hanging frame shall be sealed with nets.
the top of the hanging basket shall be provided with head nets or head protection sheds.
the inner side of the hanging basket shall be bound with a body guard, and a toe board shall be set.
lifting bridge frame The chain block and hand hoist used for hanging basket can only be used after passing the appraisal of technical department.
the chain block shall be at least 2T.
the hand hoist shall be at least 3T, and the bearing steel wire rope and safety rope shall be more than 12.5mm in diameter When hanging basket and bridge frame are used.
overload is strictly prohibited.
work at height
(5) safety net shall be set up according to the requirements.
for construction projects above 4m, safety net shall be set up, A 3-6M wide safety net should be set up on the first floor of the building.
if the high-rise building is constructed,
a 3M wide fixed safety net should be set up every four floors above the safety net on the first floor.
if the vertical net is used for protection on the construction floor,
the vertical net should be more than 1m higher than the building, Moreover, the vertical net should be tightly overlapped and the specification quality should be ensured.
the use of the vertical net should be safe and reliable.
(6) the safety protection at the entrance should be done well.
the specific methods are the same as the prevention and control measures for the falling accident at the entrance.
(7) when using the high stool and ladder, only one person is allowed to operate the single ladder, the supporting angle should be 60 ° to 70 ° and the anti-skid measures should be taken for the lower foot of the ladder, When erecting a miter ladder, the included angle of the two ladders should be kept at 40 ° and the two ladders should be firm. When moving the ladder, no one is allowed to stand on the ladder.
when using a high stool.
only one person is allowed to stand on a single stool, and the distance between the two stools should not be more than 3m after the double stools are separated.
when using a high ladder and high stool.
when using a high stoolIn addition, corresponding safety measures should be taken according to the needs.
(8) when there is no reliable protective facilities.
safety belt must be worn when working at height, otherwise, it is not allowed to work at height.
at the same time, the quality of safety belt must meet the safety requirements for use.
(9) before climbing, it is necessary to check whether the pedal is safe and reliable, For example, whether the footrest has bearing capacity; Whether the root of the wooden pole is rotten.
it is strictly forbidden to walk on the asbestos tile.
particleboard and plywood ceiling.
(10) it is not allowed to work at heights in the open air in strong wind, heavy rain, snow and fog.
in addition, it is necessary to conduct safety inspection in the process of working at heights, such as abnormal behavior of people and abnormal state of objects, So as to control the occurrence of falling accidents.
.
the accident of falling from height can be controlled
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