Staircase with string. Drawing, description

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Staircase with string. Tips for the home master

Builder, home master

A lot of different equipment and tools are required for a country house, and even more so for a household plot. Not the last place among them is occupied by the importance of the stairs, which once I needed, and quite long (or in this case, one might say, high) - about two meters. It was quickly made from existing old water pipes. By design, it was nowhere simpler: two parallel racks from a pipe with a diameter of 28 mm and several cross-steps between them from a pipe with a diameter of 21 mm. The gap between the uprights "in the light" is 300 mm, approximately the same distance between the crossbars. The parts were connected by electric welding.

Another time a shorter ladder was needed. It was a pity to cut the previous one in half, and I welded another similar one from the same material. Only now the gap between the uprights turned out to be about 400 mm (so the hand took it). The distance between the crossbars remained approximately the same (and, in my opinion, 300 mm is the optimal step). However, after the work was completed, the need for stairs disappeared and both of them lay idle along the garage wall for a long time.

But it so happened that after a while a ladder was needed again, but now even longer (or higher) than the first. Then I thought about it - not to do the third one? And there are almost no materials (pipes) left. There was only one way out - to reduce the width of the short ladder and weld the ends of the racks of both. But then doubts arose - will the racks have enough rigidity so as not to bend under the weight of my body? No acceptable solution came to mind, and there was no time to search the technical literature for proven methods either. You have to come up with something!

Well, what he finally came up with can be seen from the drawing and photographs. And if the design of the composite staircase itself does not require special comments, then you will not see the technology of tensioning the "string" in the drawing and you will have to describe it, although it (the technology) is also quite simple. But first, I note that the "bowstring" is made of a smooth reinforcing rod with a diameter of 8 mm, and the hole for it in the spacer is 9 mm in diameter, so that the bowstring can slide freely under load. Having inserted the "string" into the hole in the spacer, one end of it was welded to the rack. I did the same with the other "string". Then he called an assistant and asked him to bend the ladder a little (so that the concave side was on the side of the support). Pulling the free end of the "bowstring" (as far as possible), welded it to the post, and then, in the same way, the end of the other "bowstring". That's the whole trick. As a result, a rather long staircase made of relatively thin (and therefore rather light) pipes acquired the necessary elasticity.

Ladder with “strings” (pipe material - steel) in a “hanging” version of use (click to enlarge): 1-post of the first ladder (pipe Ø 28x3, 2 pcs.); 2 - cross member of the first staircase (pipe Ø 21x2,5, 6 pcs.); 3 - stand of the second ladder (rough Ø 28x3, 2 pcs.); 4-cross member of the second ladder (pipe Ø 21x2,5, 4 pcs.); 5 - interstair connection (pipe 028x3, 2 pcs.); 6 - gusset (steel, sheet s3, 2 pcs.); 7-console (pipe Ø 21x2,5, 2 pcs.); 8-gripper (pipe Ø 21x2,5, 2 pcs.); 9-spacer (pipe Ø 21x2,5,2 pcs.); 10-"string" (smooth steel reinforcing rod Ø 8, 2 pcs.); 11 - stop (pipe O21x2,5, 2 pcs.); 12-wall well (concrete ring Ø 1000)

With the help of this long ladder, he completed a number of high-rise repairs of the house and outbuildings. But soon the well needed to be serviced. I decided to use the same ladder again. Only this time it had to be modernized, however, already without cardinal alterations. In order for the ladder to be hung on the wall of the well, consoles with grips were welded near its upper ends, and stops not far from the lower ends.

Staircase with bowstring
Universal lightweight ladder made of steel water pipes with "bowstrings" to provide the necessary elasticity

Now the staircase has a universal purpose: it is used both as an ordinary "standing" one - for climbing up to high-lying structures and structures, and as a "hanging" one - for descending into the depths: a well, a cellar for maintenance.

It would be appropriate to say that neighbors also use this staircase - it is not difficult even for one person to move it even a few hundred meters.

Author: A.Matvejchuk

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