In addition to steel custom stairs, steel and clay can also be on-site
Curved stairs, as a classic art form, cleverly link the split-level structure of the building with ingenious ideas and pleasing shapes, increasing the flexibility of the space. At the same time, the curved staircase process is complicated, the shape is complex, and the construction is slightly wrong, it will be self-defeating, and it can not form the “highlight” of interior architectural decoration.
Therefore, a high-quality curved staircase, to have a unified high-quality materials, scientific and accurate design scheme, excellent processing technology and professional construction team these key points are indispensable.
Stairway civil construction preparation
Technical work is the forerunner of the construction, adhere to the joint review of drawings, and prepare for the construction. The project engineer will organize all majors to jointly review the drawings, solve the problems that may be encountered in the construction in advance, and create conditions for the construction. The civil engineering department must have a full understanding of the actual situation before they can build the perfect staircase.
The most critical point in the early stage of construction:
Like all stairs, curved stairs are mainly composed of steps, and railings, but relative to ordinary stairs, curved stairs are rotating, the steps are radial open, the handrail is also according to the overall shape of the smooth curve, so the line has become the most critical process control point in the early stage of construction.
1. Marking
Marking is an important start in stair construction, and the completion of complex processes requires our experienced construction personnel.
Pop out the site line on the cushion according to the plan, divide the number of steps, and mark the accumulated elevation of each step as shown in the figure.
2. Stair bottom upper arc mold
The construction of the wooden formwork is detailed and in place to fully prevent the collapse of the mold and leakage in the later stage. The basic frame construction requires very precise frame production, and the curve curvature of the wood veneer should be natural, and there should be no sudden change in curvature. Highly difficult installation requirements require experienced professionals to install.
3. Stair rebar lashing
Secure the steel bars to each other with straps
4. Stair treads vertical panel installation
The tread facade is made of 15mm wood template, and the tread plane is reinforced by wooden square.
5. Pour concrete for stairs
All cast-in-place stairs are made of concrete, the slump is maintained between 160 and 170, and the concrete is poured according to the step height as the pouring control height, so as to avoid the deformation of arc mold formwork caused by excessive local pouring. In the step pouring process, the upper part is carried out after the completion of the lower part pouring, and the upper part is prohibited if the lower part is not completed, and multiple parts cannot be poured at the same time. Concrete stairs pouring process is complex, the construction time is relatively long, but, durable, good safety, walking will not occur. The use of fully enclosed three-dimensional support mold, so that the cast-in-place concrete stairs have been formed before pouring concrete, so as to ensure the geometric size of the stairs, but also to avoid the quality problems that are prone to the traditional process support mold.
The concrete surface of the staircase after mold removal is smooth and flat, the edges and corners are square, and the observation and measurement effect are perfect.
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