
ULMA is a manufacturer of formwork and falsework systems used at construction sites worldwide.
The high-load capacity falsework props, MK Heavy Duty Shoring Towers and Aluminium Prop ALUPROP, are characterized by their unique design, which is adaptable to a wide variety of sites, including bridges, large structures, and building constructions. This article introduces the performance aspects and on-site applications, while also referencing relevant case studies.

These towers are high-load capacity falsework systems suitable for supporting heavy structures in civil engineering projects. The modular design allows for the combination of components ranging from 0.75 to 3 meters, enabling configurations that adapt to on-site conditions.
The MK-360 is suitable for bridges and large structures, the MK-150 is used for low-height falsework for beams and slabs, and the MK Prop is suitable for auxiliary support in confined spaces. The unique feature is the ability to achieve diverse combinations with a limited number of components, allowing for quick assembly and dismantling.
Optional handrails and stairs can be installed to enhance safety during working at height.
| Weight | Upon request |
|---|---|
| Load-Bearing Capacity | MK-360: Approximately 250 to 360 kN per prop MK-150: Approximately 100 to 150 kN per prop MK Prop: Varies by configuration |
| Material | Steel (MK Beam) |
| Overall Length | Module size: 0.75 to 3 meters |

This is a high-load capacity aluminum prop system compliant with European Standard EN16031. Despite being lightweight, it possesses high strength and is suitable for a wide range of applications, including slab formwork and beam support.
A standalone tower can be constructed up to 6 meters in height, and up to 12 meters with extensions or interconnections. Equipped with self-cleaning screws and a fall prevention structure, it is also designed with safety in mind.
The system can be assembled at ground level and installed by crane, reducing working at height and improving efficiency. It is suitable for situations where rapid support is required, such as construction sites and bridge projects.
| Weight | 29.6 kg (ALUPROP type 4.5 to 6.0) |
|---|---|
| Load-Bearing Capacity | 39.1 kN (per ANSI/ASSE A10.9) |
| Material | Aluminum |
| Overall Length | Up to 6 meters with a single prop Up to 7 meters when using extension members (1 meter extension) |

The Comuneros II Bridge, a 724-meter-long cable-stayed bridge constructed in the Junín Region of Peru, adopted ULMA’s MK Heavy Duty Shoring Towers.
During the construction of the bridge deck, six MK towers with a height of 15 meters were installed at 62-meter intervals for each span. These towers functioned as a stable falsework system to support heavy loads, enabling the construction of the composite concrete and steel deck.

At the National Police Hospital constructed in Lima, Peru, a variety of formwork and falsework prop systems provided by ULMA were implemented.
The project consists of a six-story hospital building and a four-level parking facility. To meet the demands of complex slab and beam construction, systems such as ENKOFLEX beam formwork, ALUPROP towers, and BRIO falsework were used in combination. With careful consideration given to energy-efficient design and seismic resistance, more than 1,000 tons of equipment were deployed efficiently throughout the project. In addition, the reuse of formwork systems contributed to reducing environmental impact.
| Company Name | ULMA C y E, S. Coop. |
|---|---|
| Headquarters Address | Ps. Otadui, 3 - Apdo. 13 20560 OÑATI (Gipuzkoa) Spain |
| Official Website | https://www.ulmaconstruction.com/en |
Source: https://www.forbuild.co.jp/material/alpa.php
| Unit Weight |
8.9/11.1 kg |
|---|---|
| Load Capacity |
19.0~36.0 kN* |
| Material | Aluminum |
| Max Length |
3,490mm |
*When the upper end is fixed to timber and the lower end to concrete
*Based on the ARPA 45 model.
Source: https://www.peri.ltd.uk/products/peri-up-flex-heavy-duty-prop-hd.html
| Unit Weight |
91.03~265.98kg |
|---|---|
| Load Capacity |
Up to 200 kN |
| Material | Steel |
| Max Length |
Approx.8,330mm |
https://www.peri.ltd.uk/dam/jcr:cb5a5bf0-8e05-4d70-b6fd-780f3cf91333/peri-up-flex-hd-prop.pdf
Source: https://www.altrad-coffrage.com/en/solutions/shoring/props/tetrashor.html
| Unit Weight |
Approx. 131–159 kg |
|---|---|
| Load Capacity |
Up to 400 kN* |
| Material | Hot-Dip Galvanized High-Tensile Steel |
| Max Length |
17,000mm* |
*Applicable to single-leg prop configuration onl