In excavation and tunnel-related construction, selecting falsework props appropriate for site conditions is key to ensuring safety and shortening project timelines.
This article summarizes case studies on the construction conditions and the characteristics of the falsework prop products that were used.
This is a case study on a water supply pipe renovation construction. While continuing to operate the existing pipes, it was necessary to install a new pipe in the opposite traffic lane. This required quick and safe implementation of continuous shallow excavation. In this case study, MGF’s shoring prop system, GRiPSHORE, was used.
GRiPSHORE is a lightweight system using glass fiber reinforced plastic. Concurrent use of the trench jacking theory, in which the jack absorbs earth pressure during excavation, makes it possible to secure workspaces in a short amount of time.
Thanks to the contribution of GRiPSHORE, the renovation work was successfully completed in early 2017.
This is a case study on the construction of a new water treatment tank. The main design challenge was to safely support the loads caused by fresh concrete lateral pressure during casting and the self-weight of the formwork, while casting the rectangular tank walls in a single pour to a height of 5.4 meters (full-height casting), using a 300 mm thick ground slab and screw piles.
ULMA utilized approximately 594 m² of ORMA single-sided wall formwork as the core component, combining it with MK frames and integrating a stair tower for access.
The high-capacity aluminum props ALUPROP were installed externally as auxiliary supports. By combining ALUPROP with project-specific components to appropriately distribute the load, a complete redesign of the slab was avoided.
This is a case study of an underground parking facility adjacent to a newly constructed office building. During the structural construction phase, it was necessary to temporarily and safely support the steel truss main beams, and MEVA’s MEKit (MEVA Engineering Kit) was used for this purpose.
MEKit is an engineering kit that can be configured to assemble towers according to on-site requirements. In this case study, two support towers were assembled. Precise height adjustments were performed using the base and head spindles, ensuring that the truss beams were securely supported along with the concrete columns.
MEVA’s well-established MEP falsework towers were used in combination for slab support, and the heavy-duty formwork system Mammut350, capable of withstanding fresh concrete pressures of 100 kN/m², was used for wall construction. As a result, the entire falsework plan—from temporary support of the main beams through slab construction—was efficiently streamlined.
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
