One group of wind rope shall be set at 20m, and one group shall be added every 10m; 4.
Foundation pit construction shall be carried out in accordance with the requirements of construction organization design or special construction scheme; 2.
The distance between every two vertical poles in the horizontal direction of the pull node between the frame and the building is less than 3.6m, and a pull support point is set every 3.6m in the vertical direction; 3.
Hand held electric tools shall be equipped with switch box and reliable grounding device.
The distance between upright posts (24m high scaffold) shall not be greater than 1.8m, and the horizontal height shall not be greater than 2m; 6.
The track laying of the pile driving machine shall comply with the provisions of the factory manual; 5.
3、 Key points for supervision and monitoring of construction power consumption 1.
The installation and disassembly personnel of each construction elevator are fully equipped (including drivers, riggers, electricians, welders, etc.), and the operators must work with certificates; 2.
The torque limiter is sensitive and reliable; The luffing limiter is sensitive and reliable, and the ultra-high limiter is sensitive and reliable; Hook safety is sensitive and reliable; Drum safety is sensitive and reliable.
The erection height of on-site lighting is greater than 2.4m, and safe voltage shall be used in dangerous places; 5.
forty-eight × 3.5mm, no crack, etc; 2.
The upper and lower foundation pits must be provided with climbing measures; 7.
The electrical machinery power wiring and control system shall be in reliable contact, and the connecting cable shall be free from damage.
The frame body shall be vertical, firmly connected and covered with a small eye safety net; 7.
Set a layer of isolation fence every four steps; 7.
The supervision and control points of formwork support system 1, the material of steel pipe support is in conformity with the regulations, and the outer diameter should not be less than that.
For formwork erection at a height of more than 2m in the working environment, the operators shall have a reliable foothold and complete protective facilities.
Woodworking planer and electric saw shall be provided with protective shed, special switch box, complete safety devices, safety operation specification board and acceptance board; 3.
The floor unloading platform shall be protected reliably and laid tightly; 6.
The hanging tray is provided with safety door and two side baffles, which are firm.
The broken wire of steel wire rope does not exceed the standard, does not support the ground, and protection shall be set when crossing the road; 5.
The erection height of branch line shall ensure that the height of cable line is greater than 2.5m and the height of overhead line is greater than 4m; 4.
Protective grounding and lightning protection grounding shall be set at the four corners of steel pipe scaffold.
The protection around the operation face is tight, reliable and safe; 4.
It can be used only after being tested by the testing institution recognized by the Municipal Construction Commission and issued a certificate of conformity; 3.
It can be used only after being tested by the testing institution recognized by the Municipal Construction Commission and issued a certificate of conformity; 3.
Source: in case of infringement by the construction supervisor, please contact to delete 1.
The staffing of tower crane includes 1 ~ 2 command personnel except the driver; 4.
4、 Key monitoring points of “three treasures” and “four openings” protection supervision 1.
High voltage line protection shall be erected according to the scheme; 3.
The crane tray is ultra-high limit and the docking device is sensitive and reliable; 2.
Two front and rear layers shall be set on both sides of the inclined tie rod or steel wire rope; 3.
Double layer anti falling sheds shall be erected on three sides around the elevator; 5.
The maximum deformation and daily deformation of the foundation pit shall not exceed the specified limit; 4.
Constructors must wear safety helmets correctly when entering the site; 2.
（2） Erection of derrick and gantry 1.
（2） Key points for supervision and monitoring of cantilevered steel platform 1.
Whether the electrical equipment and mechanical equipment have reliable grounding devices; 8.
Wear safety helmets correctly and fasten helmet buckles; 2.
Reliable protective railings must be set at the edges of balcony, roof, etc.
Safety belt must be worn when working at heights above 2m; 4.
The power line at the primary side shall not exceed 5m, the shell shall be reliably grounded, the incoming and outgoing line side shall be provided with protective shield, rain proof measures and acceptance card; 4.
The climbing ladder shall be complete, and the access to the working face shall be firm and flat without obvious height; 5.
（4） Key points for supervision and monitoring of Construction Elevator 1.
Protective sheds shall be set at the entrance of the passage, and double protective sheds shall be set at the height of the construction layer exceeding 24m; 7.
5、 Key points for supervision and monitoring of scaffold erection 1.
The first wall attached device shall not exceed 7m, and the height of the handle rod shall not exceed the top of the derrick; 11.
During installation, the number of steel wire rope clamps shall not be less than 4; 5.
The safety belt is intact, hanging high and using low; 3.
Two.
Professional construction personnel must work with certificates; 5.
Column stability, including support height, horizontal support between columns, vertical and horizontal cross bracing spacing, vertical pole spacing (longitudinal and transverse) meet the requirements of the scheme; 3.
Key monitoring points of foundation pit construction supervisor 1.
The edge of the foundation pit with a depth of more than 2m shall be provided with protection; 3.
8、 Monitoring points of personal protection supervision 1.
Construction personnel must wear insulated shoes and gloves when operating stone grinder, class I hand-held tools and submersible pump.
（5） Key points for supervision and monitoring of small construction machines and tools 1.
The winch shall be firmly fixed and the rope drum safety device shall be effective; 3.
The stair mouth shall be provided with edge handrails, the elevator wellhead shall be provided with protective doors, and a flat net shall be set every 10m in the elevator shaft; 5.
The power switch box shall have one machine, one switch, one leakage and one box; 7.
Insulating boots, insulating gloves and welder’s face shield shall be intact and used accurately; 4.
The mixer and mortar machine must be equipped with a special switch box, an operation protection shed, a safety operation procedure board and an acceptance board; 2.
The shelving point and upper tie point must be set on the building, not on scaffolding and other construction equipment; 2.
The upright, cross bracing and tie shall meet the requirements of construction organization design, and the tie must be connected with the building; 3.
Construction in progress shall be closed with qualified safety net; 3.
The electric welding machine shall be equipped with special switch box and no-load step-down device at the secondary side.
After the cantilever platform is installed, it can only be used after passing the acceptance by the project leader and hanging load limit signs (both inside and outside).
6、 Key points for supervision and monitoring of construction machines and tools (I) pile driver construction 1.
Effective drainage system shall be set for foundation pit construction; 5.
The electric box shall be uniformly numbered and placed at a height higher than 60cm; 6.
The installation and disassembly personnel of each tower crane are fully equipped (including drivers, riggers, electricians, welders, etc.), and the operators must work with certificates; 2.
One shear brace shall be set every 9 meters; The included angle is 45 ~ 60 degrees; 5.
The frame shall be equipped with lightning protection device.
The pit side load, soil stacking and the distance between mechanical equipment and the pit side meet the requirements specified in the scheme; 6.
The scaffold shall be provided with a climbing ramp; Access protection shed shall be set at the entrance and exit; 8.
The steel wire on the rope drum of the transmission system shall not be less than three turns; 8.
The hoisting steel wire rope shall be well lubricated, and there shall be no broken wire exceeding the standard; 4.
The ultra-high limit device of pile driver meets the requirements, and there is no high-voltage line within 5m of the operation area; 3.
7、 Key points for supervision and monitoring of operation platform (I) key points for supervision of the erection of landing operation platform 1.
The pole foundation shall have a drainage system; 2.
Protective railings and safety nets shall be set above the second step; 4.
Communication devices must be set between the cab and each floor.
The mobilized construction machinery has passed the acceptance, the driver works with certificate, and a warning line is set in the operation area.
Personnel shall be protected for hazardous operations..
If the height of the hanging basket exceeds 30m, a double-layer protective shed shall be set up; 9.
The license for pile driving machinery is complete and effective; 2.
Protective fence shall be set around the bottom of the cage; 4.
The power transformation and distribution device meets the specification requirements; The power supply adopts three-phase five wire system, and the distribution room is equipped with warning signs, fire extinguishers, insulating blankets, insulating gloves, etc.
Set reliable protective measures for reserved openings and pits; 6.
Four checked lifting rings shall be set; 4.
The bottom is solid and flat, meeting the requirements of construction organization design; 2.
The layout of temporary power consumption site shall comply with the power consumption plan of construction organization design; 2.
The pit wall support shall be implemented according to the scheme, and the environmental monitoring of the foundation pit shall be implemented as required.
The floor shall be provided with floor number mark and up-down contact signal device; 10.
（3） Key points for supervision and monitoring of tower crane 1.
After the operation platform is erected and accepted by the project leader, the acceptance Board shall be hung after passing the acceptance, and the load limit sign board (both inside and outside) can be used.
