Monachino Technology Precast Strip Foundation For Precast Walls
PRECAST STRIP FOUNDATION
PRECAST STRIP FOUNDATION FOR PRECAST WALLS
Precast STRIP foundation
The precast foundation is a reinforced concrete element made up of a tied rebar beam cage incorporated within a semi-precast concrete element which acts as formwork.
The geometric dimensions and the steel area are established through static calculations elaborated according to the distributed of loads N, Mx, Tx, My, Ty and the pt pressure admissible on the terrain.
The horizontal rebars, jet out from the two internal precast walls, are necessary tojoin all the precast foundations one another.
INFORMATION
DIMENSIONS
The Precast Foundation” can be produced in different forms and dimensions to satisfy every design and structural need.
ASSEMBLY
During the assembly process, the precast foundations (1) are placed directly on the ground, which has previously been prepared. The first casting of the concrete (2) is necessary in order to join the precast foundations one another (3) are mounted on the foundations and the bent rebars jutting out from their bases (4) are inserted inside the Foundation elements. A second casting of concrete embeds the walls’ rebars inside the precast foundations. The work is completed with the removal of all adjustment devices (5).
The way the precast foundation and the double wall are assembled is of particular interest. The wall is placed over the foundation element, from which the reinforced joints for anchoring the two elements jut out vertically. The connection between the double wall and the precast foundation can either be with reinforcement bars jutting out from the foundation element, or with reinforcement bars jutting out from the wall element (the choice is at the discretion of the manufacturer of the precast double walls).
INSTALLATION
For the assembly and alignment of the precast wall, adjusting devices are used. These allow an easy, fast and precise installation. During the production phase of the Precast Foundation, four anchor bolts are left within the central concrete walls, while the precast wall is equipped with eight threaded couplers.
The adjusting devices are fixed to the anchor bolts using nuts and to the precast wall using bolts. This system not only allows the precast wall to be aligned with pinpoint precision, but also eliminates any use of braces during the assembly phase.
The two adjusting devices will be dimensioned in relation to the weight and other strains to which the double wall is subject and are used merely for assembling the elements. When the concrete inside of the precast foundation has cured, all the adjusting devices are removed. Thanks to the technology with which it has been designed, the two precast structures manage to form, after the final pour of concrete, a perfect monolithic structure without any connection joints.
CONCLUSIONS
The use of the Precast strip Foundation eliminates all those inconveniences that crop up during the construction of foundation using the traditional method, aiming to halve the costs involved in constructing a foundation structure, greater job-site safety for workers and a turnaround speed without precedence. Unlike traditional system used in the construction of strip foundation, the use of our product does not require the additional presence of skilled workers and auxiliary tools (braces, formwork, boards, nails, hammers, pincers, shears, etc.).
PRECAST FLOOR SLAB
Having completed the pouring of concrete within the foundation and the walls, the next step is to assemble the precast floor slab and the placing of finishing rebars. The work is finished with a single pour of concrete so as to obtain a monolithic structure. The system guarantees protection from damp and the static stability of the structure.
ADVANTAGES COMPARED TO THE CURRENT SYSTEM
- 40% savings on completion times.
- 30% savings on total work costs.
- Speed with which the work is terminated without the need for skilled labor for the positioning of reinforcement rods.
- Absence of connection joints between the doublewall and the foundation.
- Perfect damp-proofing.
- Speed of assembly and adjustment of the precast foundation element and the double walls.
- Millimetric precision in the adjustment of the elements.
- No need of props.
