External scaffolding construction program

A scaffolding program selection

1, selection principles

(1) the requirements of the work period and the construction of organizational arrangements;

(2) the structural form of the project and the height of the situation;

(3) the structure of the frame selection, and strive to achieve the structure of the structure should be safe, reliable, and economically reasonable cost;

(4) (4) in the specified conditions and the specified period of use can fully meet the expected safety and durability. ) in the specified conditions and the specified period of use, can fully meet the expected safety and durability;

(5) the selection of materials, and strive to achieve common common, turnover and utilization, easy to maintain and repair;

(6) the structural selection, and strive to achieve a clear force, structural measures in place, lifting and taking apart convenient, easy to check and accept;

(7) Comprehensive the above points, scaffolding erection, but also must comply with the "building construction safety inspection standards" requirements, to comply with the relevant standards of the provincial civilization standard chemical sites.

2, the choice of frame

According to the above principles, combined with the actual situation of the project, taking into account the past construction experience, decided to use the following scaffolding program:

13 #, 16 #, 17 # building and commercial 5 # building, part of the underground garage for the frame shear wall high-rise structure, taking into account the turnover of the perimeter material, site conditions and construction deployment requirements

The first floor to the second floor of the double-row floor-standing steel pipe scaffolding, erection height of 9 m. The third floor to the tenth floor, the eleventh floor to the top of the building using steel suspension double-row steel pipe scaffolding section erection.

3, scaffolding material selection

(1) steel pipe 48mm x 3.5mm welded steel pipe, steel strength grade Q235-A, the surface of the steel pipe should be straight and smooth, there should be no cracks, delamination, indentation, scratches and hard bending, the new steel pipe should have a factory certificate. Before scaffolding construction must be the admission of steel pipe samples, sent to the relevant national qualification test unit, steel pipe bending, tensile and other mechanical tests, the test results to meet the design requirements, before the use of construction in the construction.

(2) the scaffolding of the use of malleable casting fasteners, should be in line with the ministry of construction "steel pipe scaffolding fasteners standard" JGJ22-85 requirements, by the fasteners production license of the manufacturer, there shall be no cracks, pores, shrinkage, trachoma, and other forging defects, fasteners specifications should be matched with the steel pipe, and the pasting and the surface should be dry and whole, the activity part of the flexible, clamping the steel pipe when the opening of the smallest distance of not less than 5mm. The tightening torque of steel pipe bolts shall not be destroyed when it reaches 70N.m. If old fasteners are used, the fasteners shall not be damaged. If you use the old fasteners, fasteners must be sampled and sent to the relevant national qualification test units, fasteners anti-slip force test, the test results meet the design requirements before being used in construction.

(3) should be maintained before the erection of shelves, rust and uniform coloring, color and strive to environmentally beautiful. Scaffolding poles, guard rails, skirting poles uniformly painted yellow, scissor braces uniformly painted orange-red. The bottom row of poles, sweeping poles are painted red and white color.

(4) The scaffolding board is made of bamboo skewers, and its thickness shall not be less than 50mm, and the spacing of splicing bolts shall not be more than 60mm, and the diameter of bolt holes and bolts shall be closely matched.

(5) safety net using mesh safety net, mesh should meet the 2000 mesh / 100cm2, to do penetration test does not penetrate, 1.6 x 1.8m single net weight of more than 3kg, the color should meet the environmental effect requirements, choose green. Requirements for flame retardant, the use of safety nets must have a product production license and quality certification, as well as by the building safety supervision and management department issued by the permit.

(6) The connecting wall parts are made of steel pipe, and its material should meet the requirements of Q235A steel in the current national standard "Carbon Steel Structure" (GB/T700).

(7) The horizontal suspension bar of the suspension scaffolding adopts 16a-grade channel steel, with a total length of 3m, of which the length anchored in the building is 1.5m and the suspension length is 1.4m. The wire rope adopts 6×19 wire rope with a diameter of 18.5mm, and the pre-embedded anchor ring adopts round steel with a diameter of 16mm. The bottom layer of suspension scaffolding is closed by old wooden template.

(8) the hanging scaffolding anode angle steel using 16a channel steel, the length of 2.1m. diagonal steel wire rope adopts 6×19 type, the diameter of 14mm. the hanging scaffolding anode angle steel material requirements with the hanging scaffolding. Steel and building pre-embedded welding, welding seam must be full and uniform, weld width and thickness must meet the design requirements, welding rod selection T506 or more welding rods, welding rods in the factory must have a certificate of conformity can be used. Welding rod must be stored and used correctly, beware of moisture, once the welding rod rupture, shall not continue to use. The pre-buried anchor ring on the upper part of the inclined wire rope adopts the round steel with the diameter of 16mm.

(9) The main beam of the unloading platform adopts No.18 channel steel, and the secondary beam adopts No.10 channel steel. The strength grade of steel is not less than Q235, and its quality should be in accordance with the current national standard "carbon steel structure" (GB/T700) and "low alloy high strength structural steel" GB/T1591. The diagonal wire rope adopts 6×19 type 24.5mm in diameter, the upper wire rope pre-embedded anchor ring adopts 30mm round steel in diameter, and the lower main beam pre-embedded anchor ring adopts 20mm round steel in diameter.

Two general requirements of scaffolding

1, the construction requirements of vertical rod

(1)The bottom vertical rod of scaffolding adopts different lengths of steel pipe to arrange, the distance between two adjacent joints of vertical rod in the direction of height should not be less than 500mm, the distance between the center of joints and the main node should not be more than 1/3 of the step distance, and the overlap length of vertical rod should not be less than 1m, and no less than two rotating fasteners should be fixed, and the length of vertical rod should not be less than 1m, and no less than two rotating fasteners should be fixed. Not less than two rotating fasteners fixed, the edge of the end fastener cover to the end of the pole distance should not be less than 100mm.

Elevator, large horizontal bar joint position

(2) standing on the ground elevator should be set up with matting, and set up longitudinal and transversal direction of sweeping rod, connected to the footing point pole, about 20cm from the base.

(3) The vertical deviation of the vertical pole should be controlled not more than 1/400 of the height of the frame.

2, big crossbar and small crossbar setting

(1) The spacing of big crossbar in the height direction of scaffolding is 1.8m, so that the vertical net can be hung, and the big crossbar is placed inside the vertical pole, and the length of the outreach on each side is 150mm.

(2) The outer frame is set up at the intersection point of the vertical pole and big crossbar, and the small crossbar is set up at the intersection of the vertical pole and big crossbar, and the vertical and horizontal direction of the vertical and horizontal direction of the vertical and horizontal direction of the horizontal pole is about 20cm from the base. Small crossbar is set at the intersection with large crossbar, and both ends are fixed in the uprights to form the overall force of the space structure. The extension length of the small crossbar on the wall side should not be more than 500mm.

(3) The large crossbar is set on top of the small crossbar and fastened to the transverse horizontal bar with right-angle fasteners. The spacing of the large horizontal bar in the operation level should not be more than 400mm. the length of the large horizontal bar should not be less than 3 spans, and not less than 6m. longitudinal horizontal bar is generally appropriate to use butt fasteners, can also be used lap joints, butt joints should be staggered, should not be located in the same synchronization, the same span, the horizontal distance between the adjacent joints should not be less than 500mm, and should be avoided to be located in the span of the large horizontal bar. Lap joint length should not be less than 1m, and should be set at equal intervals three rotating fasteners fixed, the end of the fastener cover edge to the end of the distance should not be less than 100mm.

3, scissor braces

(1) each scissor braces across the number of columns should be between 5-7 roots. The width of each scissor brace should not be less than 4 spans, and not less than 6m, the inclination angle between the diagonal bar and the ground should be between 45 degrees -60 degrees.

Scaffolding scissors bracing layout

(2) 20m scaffolding, must be in the outer facade at each end of a scissors bracing, from bottom to top of the continuous set; each scissors bracing in the middle of the net distance should not be greater than 15m.

(3) scissors bracing diagonal bar joints in addition to the top can be used for lap joints, the rest of the joints are required to be butt fasteners connected, the requirements with the above construction requirements of the same lap. Requirements with the above construction requirements.

(4) The diagonal bar of scissor brace shall be fixed on the projecting end of horizontal bar or column which intersects with it by rotating fasteners, and the distance of the center line of rotating fasteners from the main node shall not be more than 150mm.

(5) The diagonal bar of transverse support shall be arranged continuously in zigzag shape in 1-2 steps from the bottom to the top layer, and the diagonal bar shall be fixed on the column or column which intersects with it by rotating fasteners. The diagonal rods shall be fixed with rotating fasteners on the projecting ends of the intersecting columns or transverse horizontal rods.

(6) Transverse bracing shall be provided at both ends of zigzag and open-ended double-row scaffolds, and one shall be provided in the middle at intervals of 6 spans.

4, scaffolding board laying requirements

The scaffolding in the row of uprights and the structural layer should be laid between the wooden boards: the width of the boards is 200mm, and the inside and outside of the uprights should be full of scaffolding boards, no probe boards.

5, protective railing

(1)The outer side of scaffolding must be equipped with 1.2m high protective railing and 30cm high skirting bar, and the top row of protective railing shall be not less than 2, with the height of 0.9m and 1.3m, respectively.

(2)If the inner side of scaffolding is formed to be adjacent to the edge (e.g., in case of large openings of doors and windows, etc.), the inner side of scaffolding shall be equipped with 1.2m protective railing and 30cm high skirting bar. 30cm high kick bar.

6, with the wall

(1) with the wall should be evenly arranged in rows, with the wall should be set close to the main node, and the use of rigid nodes, deviation from the main node distance should not be more than 300mm, rigid with the wall as follows.

Rigid wall piece setting

(2) scaffolding and building according to the horizontal direction of 4.5m, the vertical direction of 3.6m, set a tie point. If the height of the floor is more than 4m, it will be encrypted in the horizontal direction. If the height of the floor is more than 6m, it will be set up a diagonal wire rope every 6m in the horizontal direction.

(3) Tie points are encrypted in the corner and at the top, i.e., a tie point is set every 3.6 meters in the vertical direction within l meter of the corner.

(4) Tie points should be secured firmly to prevent its movement and deformation, and try to set up in the outer frame size crossbar joints.

(5) decorative stage of the external wall tie, must also meet the above requirements, indeed, because of the construction needs to remove the original tie, must be reset to set up a reliable, effective temporary tie, to ensure that the outer frame is safe and reliable.

(6) vertical spacing, horizontal spacing generally should not be greater than 6m, wall pieces must be set from the bottom step of the first longitudinal horizontal bar, when the setup is difficult, other reliable measures should be used to fix.

(7) when the scaffolding lower part can not be set up with wall pieces can be used to throw support, throw support should be used through the length of the rod and scaffolding reliable connection, and the angle of inclination with the ground should be between 45 degrees to 60 degrees, the center of the connection point should not be more than 300mm away from the main node, the throw support in the wall pieces of the amnesty can be removed only after the amnesty.

(8) connecting wall pieces in the wall rod should be horizontal and perpendicular to the wall set up, and scaffolding connected to the end can be slightly downward sloping, do not allow upward buckling.

7. Closure within the frame

(1) The distance between the uprights of the scaffolding frame and the wall shall be 200mm. If the distance is greater than 200mm due to the limitation of structural design, the standing piece shall be laid, and the standing piece shall be set up firmly and flatly.

(2) The scaffolding construction layer should be closed by scaffolding sheets or wooden boards between the poles and the building.

(3) the construction layer below the outer frame every 3 steps and the bottom of the mesh net or other measures for closure.

8, doorway construction requirements:

(1) the additional diagonal bar at the opening shall be fixed preferentially with rotating fasteners on the projecting end of the transverse horizontal bar that intersects with it, and the distance of the center line of the rotating fasteners from the center node shall not be more than 150mm.

(2) the additional transverse bracing on both sides of the opening shall be extended to the end of the additional diagonal bar; and the end of the short diagonal bar shall be provided with an additional A safety fastener.

(3) in order to ensure the personal safety of passing pedestrians and construction workers, in the project of the first floor and the ground floor entrances and exits are set up to protect the shed, the use of racking boards colorful strips of cloth full of pavement, the first layer of the shed according to the norms of double setup. Safety and fire warning signs are hung at the entrance, as follows:

Safety protection shed erection diagram

9, zigzag ramp construction requirements and ramp scaffolding board construction requirements:

(1)Ramps are suitable to be attached to the outer scaffolding or buildings, but the ramp rods are to be independently set up, the width of the ramp should not be less than 1m, and the slope is suitable to be adopted as 1:3 (height: length), and it is suitable to set up platforms in the bends, the width of which should not be less than the width of ramp, and it is suitable to be used as 1:3 (height: length). Set the platform, the width should not be less than the width of the ramp.

(2) Both sides of the ramp platform periphery must be set up railings and footboards, the height of the railings is 1.2m, the height of the footboards should not be less than 150mm;

(3) ramp scaffolding boards laid horizontally, should be in the transverse horizontal bar on the longitudinal support diagonal bar, diagonal bar spacing should not be greater than 500mm.

(4) scaffolding boards laid smoothly, the joints should be lapped, the head of the board below should be pressed against the top. The head of the board below should be pressed against the head of the board above, and the convex edge of the board head should be filled with triangular wood.

(5) The scaffolding boards of pedestrian ramps should be set up every 250-300mm with non-slip wooden strips, and the thickness of wooden strips should be 20-30mm.

10, protection engineering requirements and precautions

(1) The outside of scaffolding should be closed with qualified green safety net certified by the construction department. Mesh safety net is used to close the outside of the scaffolding, and the safety net is fixed in the inside of the scaffolding pole to prevent people or objects from falling to the outside of the scaffolding. The safety net should be firmly tied with scaffolding poles and cross poles with 18 lead wires, and the spacing between the ties is less than 0.3m, which is required to be tight and smooth. Set up horizontal safety net at the bottom of scaffolding and between layers, and use safety net bracket. The safety net bracket can be fixed directly on the scaffolding.

(2) The outer safety stopper of scaffolding is laid on the 4th and 9th floors of the 3rd building, which is required to be laid tightly and set along the outer frame through the length, so as to ensure that the personnel working on the top of the safety stopper do not fall to the ground through the safety stopper due to the inadvertent fall of the things. It is strictly prohibited to throw the shelf material directly to the ground, it should be stacked neatly and hanged on the ground with a rope, the schematic diagram of the outer safety stopper of scaffolding is as follows.

Schematic diagram of scaffolding outer safety barrier

(3) Horizontal holes of 1.5×1.5m or less in the building are covered with fixed cover or set up through-length reinforcement mesh cover, and no less than 1.2m high guardrails are set up around the holes of 1.5×1.5m or more, and horizontal safety nets are supported in the middle.

(4) The verticality of the whole scaffolding is less than 1/500 of the length, but the maximum is not more than 100mm; for the scaffolding arranged in straight line, its longitudinal straightness is less than 1/200 of the length; the horizontality of the crossbar, i.e., the deviation of the height of the ends of the crossbar, is less than 1/400 of the length.

(5) Regularly inspect the scaffolding during the use, forbid the pile of messy things, and clean up the various layers in time. Accumulation of debris, shall not be scaffolding components and other things from the high place to throw.

(6) Before dismantling, the scaffolding should be inspected comprehensively, and all the excess objects should be removed, the dismantling area should be set up, and personnel should be prohibited to enter, and the dismantling sequence should be dismantled from the top to the bottom layer by layer, and the wall parts should be dismantled only when they are dismantled to the layer. The dismantled components are lifted down by spreader or handed down by hand, and it is forbidden to throw them. The demolition of the components of timely classification and stacking, in order to transport, storage.

Three, steel suspended scaffolding

1, suspended scaffolding process is:

Horizontal suspension → longitudinal sweeping rod → vertical rod → horizontal sweeping rod → small horizontal rod → large horizontal rod (fence) → scissor braces → connecting wall → paving scaffolding boards → protection railings → safety net.

2, fixed distance positioning

First of all, in the steel section will be used as a cantilevered beam on the spacing and location of the inside and outside of the vertical bars, and with a length of 150mm diameter of 20mm round steel to make a fixed column, will be welded in the position of the vertical bars (the following chart). Then draw the demarcation line between the part to be cantilevered out and the part to be anchored in the floor slab on the steel section. Install the steel section according to the pre-embedded anchor ring and the demarcation line inside the floor slab, that is to say, the positioning of the whole frame is completed.

Fixed column diagram

3, the spacing of poles

Scaffolding poles 1.5m longitudinal spacing, 1m horizontal spacing, 1.8m step spacing; wall poles spacing vertical 3.6m, 4.5m horizontal (i.e., two steps and three spans): Li poles from the building of 0.3m.

Suspension scaffolding design

four, the hanging scaffolding angle section steel erection

1, Yang Angle steel erection process is:

Yang Angle steel and embedded parts welding → support or wire rope pulling → vertical rod → horizontal sweep bar → small horizontal bar → large horizontal bar → scissor braces → wall pieces → paving scaffolding board → tie protection railings → tie safety net.

2, the key to overhanging scaffolding in the sun angle steel fixed, fixed after the erection of the upper scaffolding, the process of the same overhanging scaffolding.

Five, unloading platform

1, the project each *** set four unloading platform were located in the ninth and fourteenth floor, unloading platform width 3m, hanging out part of the 4.5m. The main beam using 18 channel steel, the secondary sorghum using 10 channel steel. Its layout and design are shown in the following figure.

Discharge platform design

2, discharge platform processing and production after acceptance before lifting. When lifting, the first four corners of the hook, send the initial signal, but can only slightly lift the platform, relax the diagonal wire rope, before the formal lifting, the hook of the four lead rope should be equal to ensure that the platform in the lifting process of the smooth. After hoisting to the predetermined position, the first platform I-beam and embedded parts fixed, and then the wire rope fixed, fasten the nut and wire rope card, finished before the loose tower crane hook, unloading platform installation is completed after acceptance before use. Requirements for lifting an acceptance. Specific structural requirements are as follows:

(1) suspended unloading platform should be designed according to the current corresponding norms, its structural structure should be able to prevent swaying left and right.

(2) cantilevered unloading platform of shelving support and upper tie, must be located in the building, shall not be set on the scaffolding and other construction equipment.

(3) diagonal rod or wire rope, construction should be set up on both sides of the front and back of two, two of the side of the building near one for the safety reserve, the other one should be calculated for force.

(4) should be set up four after the calculation of the ring, lifting platform when the use of rings, shall not make the hook directly hooked ring, the ring should be Class A, No. 3 boiler steel production.

(5) hanging unloading platform installation, the wire rope should be used special hooks hanging, take other ways when the card head of the card in not less than three, building sharp corners of the mouth around the wire rope should be lined with soft cushioning, hanging unloading platform should be slightly higher than the inner mouth of the outer mouth.

(6) platform should be paved scaffolding.

(7) cantilevered unloading platform left and right sides must be equipped with fixed protective railing.

(8) cantilevered unloading platform lifting, need to wait until the beam support point welding fixed, connected to the wire rope, adjusted, after checking and acceptance, before loosening the lifting hook, up and down operation.

(9) the use of picking type unloading platform, there should be a person to carry out inspections, found that the wire rope corrosion damage should be replaced in a timely manner, weld welding should be repaired in a timely manner.

(10) unloading platform should be marked on the allowable load value. The total weight of personnel and materials on the operating platform is strictly prohibited to exceed the design of the allowable load, should be equipped with a person to monitor.

Six, scaffolding labor arrangements

1, in order to ensure the progress of the project needs, at the same time, according to the structural characteristics of the project and the amount of scaffolding works, to determine the project scaffolding personnel need to be 15 to 20 people, all have the certificate of work.

2, the establishment of the project manager, construction, safety, erection technician management organization, erection of the person in charge of direct responsibility for command, deployment, inspection.

3, the erection and dismantling of external scaffolding should be recognized by the project technical person in charge of the construction work, and must be equipped with sufficient auxiliary personnel and necessary tools.

VII, scaffolding inspection and acceptance

1, scaffolding must be erected by professional and technical personnel with valid work permit;

2, segment acceptance and inspection, found to be non-compliant with the requirements of the should be promptly rectified, and held accountable;

3, scaffolding acceptance of segments in strict accordance with the "building construction fastening steel pipe scaffolding safety technical specifications JGJ130-2001 section VIII and JGJ59-99 "external scaffolding inspection score sheet", the items listed and construction program requirements for inspection. Fill in the acceptance record sheet, and by the erection of personnel, safety officers, construction workers, project manager visa, before delivery.

4, within the frame must be closed at each level (i.e., for isolation), and can not be greater than 4 steps.

Eight, scaffolding erection safety technical measures

1, technical safeguards

(1) shelf erection is completed, with qualified mesh safety netting laid on the periphery and bottom of the shelf.

(2) steel pipe and fasteners should be checked and selected before entering the site, the fasteners used should be cleaned and refueled once before use, and the fasteners must be tightened and not loosened. The preload of each bolt is between 40N?m and 65N?m. The fasteners should be cleaned and oiled once before use.

(3) the shelf erected to 10m height by the shelf erection unit for self-checking; shelf erection is completed by the erection of the whole scaffolding together with the use of units for acceptance checks, acceptance before being put into use.

(4) the scaffolding as a building construction work safety protection barrier and renovation work platform, it is strictly prohibited to formwork bracket, rope, pumping concrete and mortar pipeline fixed on the scaffolding; scaffolding is strictly prohibited to hang lifting equipment.

(5) the safety of scaffolding is by the integrity of the shelf and the shelf structural integrity to ensure that, without permission is strictly prohibited to destroy the shelf structure or unauthorized demolition and erection of scaffolding components on the shelf. During the use of scaffolding, the following rods are forbidden to be dismantled: the main node of horizontal and vertical horizontal rods, wall pieces.

2, quality assurance measures

(1) The operator must carry out technical training and safety education before operation.

(2) The technicians must give the safety technical briefing to the operators before scaffolding erection and dismantling, and convey it to all operators.

(3) The scaffolding must be erected strictly according to the design of the construction organization, and the technicians must be on site to supervise the erection and ensure that the erection quality meets the design requirements.

(4) scaffolding erection is complete, according to the construction organization design and single job acceptance form for acceptance of the scaffolding, found to be inconsistent with the requirements of the place, must be rectified in a limited time or immediately.

3, safety measures

(1) the operator must hold a permit to work on the heights before going to work.

(2) shelves in the erection (dismantling) process should be civilized operation, not to fall from the shelves of tools, objects; at the same time must ensure their own safety, work at height need to wear non-slip shoes, wear helmets, seat belts, not wearing safety protection shall not be on the shelves.

(3) in the shelf construction of various types of workers should pay attention to their own safety (especially in the unloading platform on the staff), shall not be arbitrarily downward, outward throwing, dropping items, shall not be arbitrarily dismantle the safety protection devices.

(4) It is forbidden to set up and dismantle scaffolding in the weather such as rain, snow and more than six winds.

(5) There should be a person responsible for the scaffolding for frequent inspection and warranty.

1) The scaffolding must be inspected under the following conditions.

2) After a force six gale and heavy rain.

3) Before resumption of work after being out of service for more than two months.

4) Check the warranty items

a. Whether the installation of each rod at each main node and the construction of connecting wall pieces are in accordance with the requirements of the construction organization design;

b. Whether the screws of fasteners are loosened;

c. Whether the safety measures are in accordance with the requirements.

(6) When electric and gas welding operations are carried out on the scaffolding, there must be fire prevention measures and special guards.

(7) scaffolding on the street side must have protective measures to prevent falling objects and injuries.

(8) during the erection and dismantling of scaffolding, the ground should be set up fences and warning signs, non-operators are strictly prohibited to enter.

Nine, steel suspension unloading platform safety precautions

1, erected with lifting machinery hoisted to the appropriate location, the platform and the building connected firmly without sliding, will be connected to the steel wire rope and the platform is smooth before the withdrawal of which machinery.

2, the platform must be used every day before the platform of the steel wire rope, rings auxiliary scaffolding board for a comprehensive inspection, found that the problem must be dealt with in a timely manner.

3, platform loading shall not exceed the load and limited to 1 ton, shall not be longer than the platform 50cm, super-high stacking materials shall not exceed the protective railing.

4, the platform guardrail shall not be arbitrarily removed.

5, when lifting must set up a person to command, hold steady can not collide with the platform, other people shall not stay on the platform.

6, put the material must be stacked neatly according to the specification of varieties, long and short separate, not mixed hanging, and shall not be assembled on the platform and clean up the template.

7, not from the upper to the next layer of the platform throwing materials.

8, night construction platform must maintain sufficient lighting.

9, unloading platform of the upper knot, must be set on the building, not set on the scaffolding and other construction equipment.

10, unloading platform installation, the wire rope should be used special hooks hanging, building acute angle of the mouth of the wire rope around the tie should be supplemented with soft cushions, the platform should be slightly higher than the outer mouth of the inner mouth.

11, unloading platform left and right sides must be installed fixed guardrail.

12, unloading platform lifting, need to beam support point welding fixed, connected to the wire rope, after the test before loosening lifting hook.

13, unloading platform use, there should be a person responsible for checking, found that the wire rope corrosion damage should be replaced in a timely manner, weld de-welding should be repaired in a timely manner.

14, the operating platform should be marked on the allowable load, the total weight of personnel and materials is strictly prohibited to exceed the design of the allowable load, with special supervision.

Ten, scaffolding dismantling safety technical measures

1, dismantle the frame, a comprehensive inspection of the scaffolding to be dismantled, according to the results of the inspection, the development of a plan of operation, reported for approval, technical briefing before the work is allowed. The operation plan generally includes: steps and methods of dismantling scaffolding, safety measures, material storage place, labor organization arrangement.

2, dismantle the frame should be divided into operating areas, set up around the rope tied fence or erect warning signs, the ground should be set up to direct, prohibit non-operational personnel to enter.

3, the demolition of the frame of the high work personnel should wear helmets, safety belts, tied legs, wear soft-soled non-slip shoes.

4, dismantling procedures should be observed from top to bottom, first built after the principle of dismantling, that is, first dismantle the tie rod, scaffolding, scissors, diagonal bracing, and then dismantle the small crossbar, large crossbar, pole, and so on, and according to the principle of step by step in order to carry out a clear. It is forbidden to dismantle the frame at the same time.

5, when dismantling the uprights, hold the uprights and then dismantle the last two buckles, and when dismantling the large crossbars, diagonal braces, scissor braces, dismantle the intermediate fasteners first, and then hold the intermediate, and then dismantle the end buckles.

6, the wall rod (tie point) should be removed with the demolition progress layer by layer, demolition of throw brace, should be supported by a temporary brace, and then can be removed.

7, demolition should be unified command, up and down echo, coordinated action, when unlocking the knot with another person, should first notify the other party to prevent falling.

8, dismantle the frame is strictly prohibited collision scaffolding near the power line, in order to prevent electrical accidents.

9, in the dismantling of the frame, shall not be changed in the middle, such as must be changed, should be dismantled to account for the situation before leaving.

10, dismantled materials should be transported under the Xu Xu, is strictly prohibited to throw. The material should be transported to the ground according to the designated location with the demolition, classification and stacking, the day of the demolition of the same day, the removal of fasteners and wire should be centralized recycling treatment.

11, high-rise building scaffolding demolition, should be equipped with good communication devices.

12, transported to the ground rod, should be timely according to the category of stacking, organizing and maintenance.

13, when leaving work on the same day, should be reinforced in time not yet dismantled part, to prevent the survival of hidden danger caused by man-made accidents after resumption of work.

14, such as strong winds, rain, snow and other special weather, should not be scaffolding demolition, night demolition is strictly prohibited.