Safety helmets must be supplied by manufacturers certified by the Ministry of Construction. Safety helmets without certificates are prohibited.The safety helmets used in the project shall be uniformly provided by the branch company, and the external contact units of subcontractors are not allowed to purchase safety helmets privately.
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Safety technical disclosure of scaffold platform construction - Figure 1
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Butt fastener shall not be used for diagonal rod extension.Lapping shall be adopted. Lapping shall not be less than two rotating fasteners for fixation. The distance from the edge of the end fastener cover plate to the rod end shall not be less than 100mm.
After the scaffold is removed, the scaffold materials shall be stacked by category, and the stacking place shall be flat. The supporting pad shall be set under the scaffold for good drainage.The steel should be placed indoors, and should be covered when stacked outdoors.Sporadic small components such as fasteners and bolts shall be cleaned and packed with diesel oil, and stored in classified bags for reuse.
1. Safety helmets must be worn when entering the construction site.2. Construction workers are strictly prohibited to work after drinking, fatigue operation and operation with illness.3. The construction personnel must comply with the site safety management system, and do not command or operate against rules;Do four no injuries: do not hurt yourself, do not hurt others, do not be hurt by others, and ensure that others are not hurt.4. Smoking is prohibited when entering the construction site.5. It is forbidden to wear slippers and high-heeled shoes to enter the construction site.6. The removed steel pipes and formwork must be lifted under the command of a specially assigned person.
Scaffold erection or dismantling must be carried out by professional scaffolders who have passed the examination and obtained the Operation Certificate for Special Operators in accordance with the Regulations on the Management of Safety Technical Training and Assessment for Special Operators issued by the Ministry of Labor.2. Operators shall work with certificates.Safety helmet, safety belt and anti-skid shoes must be worn during operation.
Before erection, the incoming steel pipes, fasteners, scaffold boards, etc. shall be inspected, and unqualified products shall not be used.Qualified components and parts shall be stacked orderly and stably according to type, specification and classification, and the stacking site shall be free of ponding
1. Vertical pole: the vertical and horizontal vertical pole spacing shall be ≯ 2m, and the step spacing shall be ≯ 1.8m. The ground shall be leveled and compacted. The vertical pole shall be buried 30~50cm above the ground. If it cannot be buried, sleeper shall be placed under the vertical pole and bottom broom shall be added.2. Cross bar: the step distance of horizontal pull rod in vertical and horizontal directions is ≯ 1.8m, and the spacing of large cross bar in the operation layer is ≯ 40cm. 3. Cross bridging: angle holding diagonal bracing shall be set at four corners, cross bridging shall be set at four sides, and cross bridging shall be set longitudinally every four rows of vertical bars in the middle, and diagonal bracing and cross bridging shall be set continuously from bottom to top.4. Laying of scaffold board: the scaffold board height shall be within 4m, the gap between scaffold boards shall be ≯ 20cm, and the scaffold board height shall be greater than 4m, and the scaffold board must be fully laid.Safety technical disclosure of loading platform erection
For erection operation, self-protection and safety protection of on-site personnel shall be carried out according to the following requirements: (1) Operators on the scaffold shall wear anti-skid shoes and safety belts.To ensure the safety of the operation, the necessary number of scaffold boards shall be laid under the feet, and they shall be laid stably without probe boards.When the toe board cannot be laid temporarily, the bars used for foot dropping, grasping and holding shall be stable parts of the framework. The horizontal distance between the force point and the framework node shall not be more than 0.8m, and the vertical distance shall not be more than 1.5m. The free vertical bar (which has not been connected with the horizontal bar) above the vertical bar joint shall not be used as the holding bar.
Construction operation characteristics and hazard sources: high physical consumption, easy to fall from heights and object strike accidents, specific control measures for hazard sources and safety precautions
Contents of disclosure: 1. Operators must strictly abide by the rules and regulations and the Construction Site Management Reward and Punishment System.2. Operators must receive professional training from relevant departments, obtain special operation certificate, and then go on duty with certificate.3. The operators must operate in strict accordance with the safety technical operating procedures of the type of work, and shall not operate against rules.4. The scaffold shall be erected in strict accordance with the Construction Scheme for Double row Bamboo Scaffold, JDJ59-99 Safety Inspection Score Sheet for Floor type External Scaffold and DJB13-34-2000 Technical Specification for Floor type Double row External Scaffold.
1、 Objective: to prevent collapse accidents, serious injuries and fatal accidents from being zero, and to control minor injuries at 4 ‰. Index: the horizontal distance of the pull node is less than 6m, and the vertical distance is less than 4m. The working surface is fully paved with scaffold boards;Daily cleaning of sundries in the safety net;Warning must be set for dismantling and changing protective facilities.
Before dismantling, the team shall learn the safety technical operation regulations. The team must make safety disclosure to the dismantling personnel. The disclosure must be recorded, the disclosure content must be targeted, and the precautions for dismantling must be clearly stated.
The upright tube is staggered with 4000 mm steel tube and 6000 mm steel tube to make the upper joints of two adjacent upright tubes staggered: the joints of two adjacent upright tubes should not be set in synchronization, and the staggered distance of two separated joints separated by one upright tube in synchronization in the height direction should not be less than 500 mm; the distance between the center of each joint at the main node should not be greater than 1/3 of the step distance;The extension of the vertical pole shall be connected by butt fasteners. The head on the top of the frame can be lapped. The lap length shall not be less than 1m. It shall be fixed by not less than 2 rotating fasteners. The edge distance of the end fastener cover plate shall not be less than 100mm.
The extension length of the adjustable base adjusting screw should not exceed 20cm. If it exceeds 20cm, the design value of each gantry bearing capacity should be corrected;When the extension length is 30cm, it shall be multiplied by a correction factor of 0.90;If it exceeds 30cm, it shall be multiplied by a correction factor of 0.80.
1. Horizontal connecting rods shall be set at the inner and outer sides of the corner of the scaffold step by step to connect the portal frame at the corner.twoThe height of the scaffold passage opening should not be greater than 2 gantry frames, and the width should not be greater than 1 gantry span;Reinforcement measures shall be taken for the passage opening.threeThe erection height of floor type portal steel pipe scaffold should not exceed the requirements in Table 2-3.
This document is the safety technical disclosure of construction scaffold and formwork support supervision, including: content introduction: the scaffold mentioned in this document refers to the floor mounted assembled scaffold in the form of pole piece erection, such as: steel pipe fastener type, bowl buckle type;Formwork support refers to the support system used to support the cast-in-place concrete formwork system, including: upright, cross bar, diagonal bar, wall linking piece, bottom support, top support, etc.
Contents of disclosure: construction design must be carried out for scaffold structure, which shall be determined through calculation.twoThe hoisting mechanism and its safety device shall be subject to no-load, rated load, eccentric load and overload operation tests, and shall be confirmed as qualified and documented.threeWhen the basket scaffold is self-made on the site, the quality management personnel must be assigned to inspect and accept the process during the manufacturing process, confirm that it is qualified, and form a document.
1. Operate according to the requirements of the construction scheme;2. The installation and removal personnel must hang the safety belt according to the requirements of work at heights;