Basket stairs are usually used for a while until a stationary staircase is built. Staircase Strike. Building material for the manufacture of ladders is wood, duralumin. The aunts of these stairs should have such a cross section so that the structure does not bend. The steps of the ladder must be pulled away by bolts every 2 meters. If these stairs do not have pressed or trimmed steps, their use is impossible. The width of the ladder up to 3 heights is recommended 0.5 m. With an increase in height, the width of the ladder should increase. In order for the stability of ladders to be higher, the width of the stairs below is increased. Ends on the lower ends of the steps are performed in the form of metal sharp spikes or tips from rubber. After working on the stairs, it is best to lie down on the massage table so that your back is resting.