Project Demolition Features and Targeted Measures:
1Demolition of the chimney has reached a height of...120Rice, concrete cylinder body300Our salt and cement bricks are structurally sound, requiring the construction of a scaffolding around the chimney for manual dismantling.120The circularly-mirrored wall-mounted scaffolding, if fully utilizing ground-level scaffolding is insufficient.JGJ130-2001Safety Technical Requirements for Clamp-Type Steel Pipe Scaffold. The main tools used for manual dismantling are pneumatic hammers, which are supplied with air by compressors. Directly supplying air from the ground presents significant challenges.
Targeted Measures:
Construction scaffolding reaches new height120Millet, constructed in sections.50Our company uses ground-mounted steel pipe scaffolding below the meter mark, and above that, it is divided.4Segmental cantilever construction is underway.50Rice,68Rice,86Rice,104The company has added steel I-beam brackets.
Outsource the steel pipes for the air ducts and vertically secure them on the construction scaffolding, ensuring the supply of gas pressure and resolving the issue of using jackhammers that are manually dismantled.
2When dismantling chimneys, efforts should be made to minimize the impact of dust. Manual dismantling involves using jackhammers to crush the chimney from top to bottom, resulting in significant airborne dust at high altitudes.
Targeted Measures:
Green banners are hung on the exterior of the construction scaffolding.2000The Dust Control Net, featuring certain strength, effectively reduces the impact of dust and shields against debris.
3Major safety hazards.120The chimney can be dismantled in two parts during removal.30The upper 3 meters are manually dismantled.30The lower portion can be removed mechanically. The entire manual removal is an aerial operation, posing significant safety risks.
Targeted Measures:
Climbing (dismantling) scaffolding must be performed by scaffold workers who have received safety and technical training and hold valid certifications. All personnel involved in the chimney demolition project must undergo regular physical examinations. Those with high blood pressure, ***, and other conditions unsuitable for high-altitude work are prohibited from operating on scaffolding.
Additional lightning protection measures have been added during the scaffolding setup process.
Established personnel and goods hoists, along with corresponding isolation sheds.
5Severe weather conditions above level 5 prevent construction work, including the erection and dismantling of scaffolding.
Rainy days do not include construction activities, such as erecting or dismantling scaffolding.
Section 1: Manual Demolition Plan
1Construction Sequence:
Construction of scaffolding→Personnel and goods elevator placement→Manual dismantling of the cylinder body and disassembly to30Mee→All construction scaffolding has been removed.→Mechanical demolition methods (hydraulic shears and pickhammers) have been adopted.

2Construction Method:
（1Establish a fully enclosed steel pipe scaffold from ground level to the top (exceeding the height of the chimney)1.5After the 20 meters (65 feet) were successfully removed and inspected, the manual dismantling process commenced, continuing down to ground level.30Mechanical demolition is now being used instead.
（2Prior to manual dismantling, the ventilation openings were used as slag outlets, with a mini excavator employed for slag removal.
（3Construction workers stood on scaffolding, attached their safety belts to the steel pipes, and then used jackhammers and hammers to dismantle the cylinder piece by piece from the outside in, ensuring that all debris fell inwardly from the inside of the cylinder.
（4No dismantling operations allowed at night;渣 removal can be scheduled during the evening, which is beneficial for continued dismantling during the day. Dismantling and渣 removal should not be conducted simultaneously.
（5The scaffolding lowers simultaneously with the decrease in the construction surface, but it must always remain higher than the construction surface.1.5Mi Zu2Rice is used to prevent debris from flying out of the scaffold's protective layer.
（6Oxygen and acetylene cylinders are placed on the work platform, only gas cutting is performed on the construction surface, while dismantling and burning through the lightning protection antenna (the length cut off is not greater than ...)1The company's new product line includes a variety of items, such as smartphones, ranging from small (5 inches) to large (7 inches) screens.
3Main Construction Techniques:
Manual Demolition120The main challenge for the Mi Chimney project is the construction of the scaffolding.120Circular ring scaffolding for wall construction, if the entire project is not satisfied with the use of ground-level scaffoldingJGJ130-2001Safety Technical Requirements for Coupling Pipe Scaffoldings. Can be assembled in sections.50Mi below uses a floor-standing steel pipe tripod; above that, divided.4Segmental cantilever construction is in progress.50Rice,68Rice,86Rice,104The company has added I-beam supports.
3．1Construction Setup:
（1Freestanding coupler pipe scaffold.
Scaffolding is of double-row type, with a height of50Mi20The company has adopted twin-tube vertical poles below 2 meters.20The structure is over 8 meters tall, utilizing single-tube vertical rods, with the dimensions for the vertical rods being: the center distance between the inner and outer rods.1.05mNo Chinese content provided.1.6mPlease provide the Chinese content to be translated.1.8m, Above ground0.2mPlease install vertical and horizontal sweeping rods, and the outer upright rods every0.6mNo Chinese content provided.1.2mVertical guardrails are set at high elevations, with uprights spanning across.6Please install the root props and diagonals, ensuring the angle between the diagonals and the ground is...45Du Zhi60During construction, dense safety nets are set up on the outer side of the scaffolding.