Comparison GTM KMP404A 460 cm vs Svelt Scalissima 9 470 cm

In this paragraph, the main properties of the design of the stairs are given. Many models have several properties at once — for example, any sliding ladder will be at least attached, and transformer models combine attached, parted, and in some cases also sliding structures.

— One- way parting. A variety of ladders and mini-ladders (see "Type"), in which the steps are located on only one of the two components. Such models are lighter than double-sided spacers, but may be less convenient to use.

— Bilateral parting. This category includes options consisting of two parts, each of which has its own set of steps — in other words, from two separate stairs connected into one device. Unlike one-sided, a similar design is found in all types of stairs, and for transformers it is almost mandatory.

— Attached. Stairs that require additional support for installation in the working position — a wall, a fence, a tree, etc. Specifying an add-on structure in rack-and-platform models (see above) usually means that one or both legs can be used as a separate ladder. But in stepladders, this option is not found by definition.

— Sliding. Such models have at least one additional section (see "Number of sections"), which is able to extend partially or completely, thus increasing the length of the entire staircase. When a longe...r length is not required, this section (or sections) is located close to the main part of the stairs and has almost no effect on its dimensions. This design has gained wide popularity in models designed for high heights — after all, long stairs would be very inconvenient during transportation and storage if it were not for the possibility of folding.

— Hinged. Stairs in which several sections are interconnected by means of hinges. In two-section models, this does not give any fundamental differences from non-hinged fastening, but if there are three or more sections, additional possibilities for transforming the stairs may appear — the hinge allows you to rotate the sections in both directions relative to each other. At the same time, the transformation of such a structure into a working platform takes much less time than unfolding a rack with a platform (see "Type").

— Telescopic. A specific type of sliding stairs (see above). It differs in that the additional sections in the folded state are not located close to each other, but one inside the other (hence the name). Thanks to this, telescopic ladders take up a minimum of space and are very convenient to transport. On the other hand, they are quite expensive. This is due to both the overall complexity of the design and the fact that the inner sections must be thin (in order to fit inside the outer ones) and at the same time strong, which puts forward increased requirements for the strength of materials.

— Mobile. This feature means the presence of special devices that facilitate movement from place to place in the working position — for example, castors. It is found mainly among scaffolding (see "Type"): unlike more traditional ladders, carrying spread out scaffolding on weight is rather difficult, and folding into the stowed position and unfolding back takes a lot of time. In addition, wheels are found in some large and heavy ladders.

The total number of steps provided in the design of the stairs. This parameter is indicated rather for reference — the primary characteristic is still the height of the stairs. Note that when calculating the number of steps, the footboard is also taken into account (see below).

The presence in the design of the stairs of the platform — a special platform in the upper part. Such a platform is much larger than steps in area and it is noticeably more convenient to stand on it, especially if you have to turn in different directions during work.

Note that in double-sided ladders, the role of the platform can be played by the two upper steps, which are put together in the working position.

The presence in the design of the stairs of a separate shelf for tools.

The shelf is found mainly in ladders and mini ladders (see "Type"). It is a flat surface at the top of the ladder, either on the rail above the footboard or where the two halves of the ladder meet. Such a surface, usually, has holes or recesses for secure placement of tools; other special devices may be provided, for example, a hook on which you can hang a bucket.

The advantage of this function is obvious: it allows you to always have the necessary tools at hand, and it is more convenient to keep them on a shelf than, for example, in your pockets.

The maximum working height of the ladder. In models that do not have a footboard (see above), this parameter is usually indicated in the specifications for the total length of the stairs. It is worth noting here that the height of the upper step in such cases rarely corresponds to the working height to the nearest centimeter - firstly, the stairs are almost never strictly vertical, and secondly, the outermost steps are usually not on the very edge. However, in most cases this difference can be neglected. If the design provides for a footboard, then the height is measured along it.

When choosing a ladder by height, it should be taken into account that the longer the structure, the greater its weight and, usually, the higher the price. Therefore, buying a model with a long length makes sense only when there is a real need for it.

Ladder dimensions in fully folded position. The smaller they are, the more convenient the ladder will be in storage and transportation. Usually, only the length and width are indicated in the characteristics, because. the thickness of modern stairs is very small and in most cases it can be neglected; and in some models, only the length may be indicated at all — for the same reasons.

The maximum working height can be described as the highest height that can be reached using a given ladder. This parameter is determined as follows: the maximum height of the stairs is taken and the height of the person standing on it is added to it (or rather, the highest height that he can comfortably reach with his hands). Of course, this parameter is rather approximate, because taken into account for some average height; and in general the rules for counting will be different. So, for some manufacturers, to determine the maximum working height, they add 2 m to the height of the ladder, others — 2 m 10 cm, and if we are talking about a ladder (see "Design"), this increase can be even less — about 150 – 160 cm (in such models, the user rarely stands on the topmost crossbar). Nevertheless, this indicator makes it possible to estimate the height that you can reach, with an accuracy of a couple of tens of centimeters, which is most often quite enough.

The maximum height of a ladder when used in ladder mode. This parameter is specified only for models that are not originally ladders (see "Type"), but can be used in a similar format. Usually the height is given by the height of the highest rung in the "ladder" installation.

The total weight of the ladder. On the one hand, the lighter the model you choose, the more convenient it will be to carry, the less effort will be expended. On the other hand, lighter weight means less material used in the construction of the stairs, and this can adversely affect reliability. Therefore, it is worth choosing an option for this parameter depending on the planned features of the application. If the expected load on the ladder is significantly lower than the maximum, then you can not pay close attention to the weight. But if you have doubts and/or plan to work in difficult conditions with a heavy load, you should choose the more massive one from two models with the same characteristics. It is unlikely that this will seriously affect the cost of forces, but the risk of breakage and a dangerous fall will decrease significantly.