Ascending step ladder When compiling the construction organization design, various ascending and climbing facilities required for the construction should be considered and determined. Generally speaking, various climbing operations should use existing conditions as much as possible, such as with the aid of climbing stairs on building structures and scaffolding or vertical transportation equipment that carries people, such as construction elevators. Ensure that all rivets, bolts, nuts and moving parts are tightly connected, the ladder column and the steps are firm and reliable, and the extension circlips and hinges are in good working condition.
Ladders should be placed on a firm and stable ground. It is forbidden to be placed on ice or snow without non-slip and fixed equipment Or on a slippery surface. The use of ladders in strong winds is prohibited. When climbing, the person faces the ladder, grasps with both hands, and keeps the center of gravity in the center of the two ladder columns. Do not exceed the top of your head with your hands during work to prevent your body from losing your balance and causing danger. When it is difficult to set the circular lane , the fire lane can be set along the two long sides of the high-rise building.
When the length of the high-rise building along the street exceeds 150m or the total length exceeds 220m, it should be in a moderate position Set up fire lanes through high-rise buildings. The fire-fighting climbing surface is set up for the needs of fire-fighting climbing truck operations and ensuring timely rescue of residents of high-rise residential buildings. Therefore, the fire-fighting climbing surface should be close to the functional stairs of the residence. When there is difficulty, the climbing surface should be close to the balcony or balcony of each residence. The main window. The fire-fighting elevation surface of unitary and corridor-style residences should not be less than the length of one long side of the residence; the fire-fighting elevation surface should be close to the public stairs, balconies and windows of the residence; there should be no tall trees that hinder climbing between the elevation surface and the building.
The fire driveway of high-rise residential buildings, and the fire climbing site should avoid underground pipes, hidden ditch, pool, and septic tank When arranging fire-fighting ascending sites and fire lanes for underground facilities that affect the load of fire trucks, the floor load calculation of underground buildings should consider the weight of the fire-fighting truck. The foundation soil should be compacted in layers, and the density should reach 85% or more: if it belongs to the similar silt layer, it should be filled with blocks or replaced with sand and gravel and ground.The compactness should meet the load-bearing requirements of the general concrete fire lane foundation. If a little organic fertilizer is sprinkled on the base layer and the grass planting board is artificially spread, the shape and size can be selected according to the fire channel.
Ascend the step ladder to spread sod or seed on the planting soil layer of the sod board. When laying sod, The turf is compacted on the surface soil of the grass planting board, and the vehicle can pass through after watering and curing. Railing as a protective facility for stairs, besides decorative function, more important is the safety function, and it is precisely this point that is easy to be ignored by the owner. The surface of the wooden handrail is smooth and straight, the corners are square, the groove depth is the same, the color is the same, and the wood grain Close, the lines are clear and beautiful, the corners are round and smooth, the arc conforms to the drawings, and the joints are flat and tight.