How to Design Large Aluminium Entrance Mats for Wide Office Building and Hall Entrances?

A large aluminum entrance mat at a wide entrance should be designed as a modular system tailored to the actual traffic path, loads, and recess dimensions. With greater widths, not only the type of insert and profile height matter, but also the method of dividing the surface into sections and the possibility of lifting them later. An excessively large single segment makes transport and maintenance difficult, while a poorly planned division may create areas susceptible to movement or uneven loading. Therefore, the design of a wide entrance zone should be based on the geometry of the entire passage rather than solely on the width of the door.

How Should a Large Aluminum Entrance Mat Be Dimensioned for a Wide Entrance?

A large aluminum entrance mat should cover the entire actual width of pedestrian traffic and have a length that allows users to take several steps across the cleaning surface. In technical terminology, width refers to the dimension parallel to the door, while length refers to the dimension perpendicular to the entrance.

At wide entrances, the nominal size of the door opening does not always correspond to the width of the traffic lane actually used. With multi-leaf doors, automatic entrances, or extensive vestibules, users may move along several parallel paths. Manufacturers of entrance systems also indicate that the mat should be long enough for users to take at least 3 to 4 steps on it, while wide main entrances require a larger surface area than side entrances. Aluminum entrance mats in large facilities should therefore be dimensioned as the working surface of the entire entrance zone, rather than as an element corresponding only to the width of a single door leaf.

When preparing dimensions, the following should be taken into account:

• active passage width – the mat should cover the area actually used by pedestrians, including situations where two people walk side by side;

• cleaning zone length – several consecutive steps increase the number of contacts between the sole and the insert and improve the gradual removal of dirt;

• recess geometry – measurements should be taken in millimetres and checked at several points, especially across large surfaces;

• finished floor level – the height of the system must correspond to the depth of the prepared recess;

• profile orientation – the structure layout should correspond to the direction of traffic and the intended division of the mat;

• possibility of removal—an individual section should not be so large that periodic lifting becomes problematic.

The design should also take into account the possibility of extending the cleaning surface beyond the direct outline of the doorway if the flow of users spreads out within the entrance area itself. The actual traffic geometry is a more useful criterion than simply replicating the dimensions of the door system.

Why Is It Worth Dividing Large Systems into Modules?

Dividing a large mat into smaller sections simplifies transport, installation, and the subsequent cleaning of the space beneath the profiles. In a wide entrance zone, a single structure covering several square metres would be difficult to lift, which is why modularity has operational rather than purely manufacturing significance.

However, section boundaries should be planned so that they create a level surface after installation and do not move during use. The substrate beneath all modules should maintain a common level, as local unevenness may cause the profiles to flex under each load. In larger recessed systems, the structure is also divided into sections that facilitate transport and installation, which clearly demonstrates the importance of modularity for non-standard dimensions.

Modules also facilitate maintenance of the entrance zone. Instead of lifting the entire surface, only a selected fragment can be exposed and the sand accumulated below can be removed. At an entrance that remains in use for most of the day, this reduces the area that must be temporarily taken out of service.

How Should Profiles and Inserts Be Selected for the Load of a Wide Entrance Zone?

Profiles should be selected according to the expected traffic volume, while inserts should be matched to the type of contaminants present in a given part of the zone. At heavily used entrances, a large surface area alone does not compensate for an overly lightweight structure or an incorrectly selected cleaning component.

Aluminum entrance systems use standard profiles with wall thicknesses of approximately 1.5 mm, as well as reinforced profiles with wall thicknesses of 2.5 mm or 3 mm. Different system heights are also available, ranging from approximately 10-12 mm to 42-45 mm, depending on the design and type of inserts. The selection should take into account pedestrian traffic, potential wheeled loads, and the mat's position within the cleaning sequence.

In large entrance zones, the following may be used:

• brush inserts,

• rubber inserts,

• textile inserts,

• cleaning and drying inserts,

• aluminum scraping elements.

Brush and rubber inserts are primarily intended for the mechanical removal of dirt, while textile inserts absorb water and finer particles. Systems combining cleaning and drying functions are particularly useful in the middle section of a multi-zone entrance.

How Should a Recess for a Large-Surface Entrance Mat Be Designed?

The recess for a large entrance mat must have a level surface, the correct depth, and dimensions matching the finished system together with the frame. In wide entrances, even a small variation in level repeated over several meters may lead to uneven support of individual sections. The documentation of Unimat Factory indicates that before ordering, the total height of the mat, the type of inserts, and the installation method should be determined, and measurements should be taken in millimeters. If the mat cannot be recessed into the floor, surface-mounted installation with ramp profiles remains an alternative, although in a wide entrance special attention must then be paid to edge stability and geometry.

Cleaning a Large Entrance Mat Must Be Considered at the Design Stage

A large aluminum entrance mat should be constructed in such a way that contaminants can be regularly removed both from the inserts and from beneath the profiles. Sand falling between the elements accumulates below the walking surface, so without periodic cleaning the collection space gradually loses capacity. The manufacturer recommends vacuuming or sweeping the surface, cleaning the spaces between profiles, and removing accumulated dirt from beneath the system. Therefore, the division into sections should allow individual parts to be lifted without dismantling the entire entrance zone.

Key Information: Designing a Large Aluminium Entrance Zone

• A large entrance mat should correspond to the width of the actual traffic flow rather than solely to the nominal dimensions of the entrance door.

• The length of the cleaning surface should allow several consecutive steps so that both soles repeatedly come into contact with the inserts.

• Dividing a wide mat into smaller sections simplifies transport, installation, and periodic lifting of the structure during cleaning.

• The profile height must be coordinated with the recess depth and the level of the adjacent floor before finishing layers are installed.

• Reinforced profiles may be justified in cases of intensive traffic or higher loads, as standard and reinforced structures differ in the thickness of their load-bearing walls.

• A large entrance surface should enable maintenance of part of the system without the need to dismantle all modules simultaneously.

FAQ

Can a Large Aluminum Entrance Mat Have an Irregular Shape?

Yes. The system can also be adapted to entrances with geometries other than rectangular; technical documentation mentions trapezoids, semicircles, and polygons among the available options. With a complex outline, precise measurement and logical division of the surface into sections become particularly important.

Can trolleys pass over an aluminum entrance mat?

The ability to withstand wheeled loads depends on the design of the specific profile and its support. Systems intended for heavily used facilities employ reinforced structures, which is why expected trolley traffic should be defined when selecting the mat.

Must a Wide Mat Cover the Entire Width of the Vestibule?

Not always, but it should cover the entire width of the pedestrian route that is actually used. If users can bypass the cleaning surface from the side, the effectiveness of even a long mat will be limited.