Construction services

Spiral stairs part 2

winding stairs
1. The second storey in a high room is made of wooden beams. Nice stairs will connect the new gallery with the apartment.
2. A spiral staircase on a circle note. The diameter is calculated as follows: double the width of the flight of stairs plus a double railing plus a pole.
3. The floor and the ceiling are finished in a rough state. Now you can get the exact measurements. The height of the stairs was measured with a very long ruler.
4. Then, using an angle bar and a laser gauge, the exact position and place of joining the metal stairs to the gallery ceiling were marked out..
5. The individual parts, cut in accordance with the drawing, are welded to the pole while still in the workshop. First, the brackets, then sections of the outer cheek,…
6. …then all the bars. The latter are made of a steel T-bar and drilled. The steel rods are then led through the holes, curved as shown.
7. Delivery of dismantled stairs. The structure was painted (anti-corrosion arba, and the stainless steel handrail is sponge-protected for transport.
8. The exit landing structure was welded to the casing around the ceiling opening, then a stair pole with brackets was attached to the ground.
9. The entire railing is then carefully aligned. The individual posts are first attached to the outer cheek with a screw clamp…

The rules governing the execution of stairs are very detailed. The investor must inform the contractor, inter alia. about the height of the floor covering, that all connections are precisely made. It is essential, because when installing the stairs, you can only slightly compensate for dimensional deviations, e.g.. on” in the first degree, you can compensate for the deviation not exceeding 1,5 centimeter. Immediately after measuring the room and arranging the delivery date, the stairs in the workshop were built. A CAD computer program was used when drawing up a detailed plan. The investor could get acquainted with the completed construction plan before starting the assembly works.
The steel structure includes: stair pole, handrail, posts and brackets with external cheek pieces. The complete steel structure was first assembled in the workshop hall. Because stairs are classified as statically load-bearing structural elements, all welding work must be performed by an authorized welder. Each bracket is separately welded to the stair pole after being accurately positioned. Thanks to the stiffening external cheeks, a stable and vibration-resistant structure is created. Then the posts are attached to the handrail, which are made of a steel T-bar. Round steel bars are led through the drilled holes in the posts, which were previously formed according to the calculations made. Then a handrail made of stainless steel was installed along with the supports attached to the posts. After grinding the steel parts, the stainless steel railing was polished, to remove tarnish, caused by high temperature.
Then the structure was partially dismantled, painted with anti-corrosion paint and prepared for transport.