MTR® System - Horizontal Structures

MTR® C Beam

The native fire-resistant solution for significant loads

MTR® C Beam

Self-supporting during assembly and casting of the deck with concrete bottom pad.

The MTR® C beam replaces a precast pre-stressed beam or high C.A. beam, providing more light weight for easier erection and with far smaller cross sections.

The concrete bottom pad, which functions as a formwork and support for the slab, totally eliminates any provisional work. The MTR® C beam in combination with partially or fully self-supporting slabs ensures total prefabrication of the horizon for off-site construction.

Ideal for the construction of shopping malls, multi-story parking lots, hotels, convention centers, schools, bridges and industrial buildings.

MTR® C BEAM.

Characteristics of the MTR® C beam

It is made of lower and upper beams, in round or square bars, connected by steel lattice cores from steelwork in accordance with UNI EN ISO 10025-2.

Fire resistance is achieved by appropriately sizing the lower cover, without the aid of plaster or intumescent paint.

Concrete of the completion casting
C25/30 when not otherwise prescribed by the designer.

Self-support
The beam carries itself and the slab bearing on it already from the moment it rests on the abutment, even before the completion casting.

Welding
Continuous wire under shielding gas (Process UNI EN ISO 4063-135) according to current NTC 2018.

Normative references
In First phase Sec. 4.2 NTC 2018 and Eurocode 3, in Second phase Sec. 4.1, 4.2 and 4.3 NTC 2018 and Eurocodes 2, 3 and 4. For designs in seismic zone Ch. 7 NTC 2018 and Eurocode 8.

Design
According to MTR® Software calculation procedure adhering to current standards.

Mechanical fire resistance (R)
Depending on the bottom cover.

Basement
Finished concrete foundation with the function of formwork and support for the floor slab.

Product certification
CE marked in accordance with UNI EN 1090-1

Types

The MTR® C beam can be made in different types to achieve maximum design freedom.

MTR® C beam with two concrete side rails up to soffit height

MTR® C beam with two steel side rails up to soffit height

MTR® C beam with two concrete side rails

Structural nodes

Support systems and structural nodes

The beams of ^MTR® System rest on the vertical load-bearing elements, columns and septa, by means of a special support system welded to the end of the beams and custom-designed, both to withstand first-phase loads and to avoid interference with the waiting bars. The connection of ^MTR® System elements with adjoining load-bearing elements, such as beams in continuity, columns and septa, is made by structural nodes using B450C steel bars for reinforced concrete.

Support on pillars

^MTR® Beams rest on the masonry or pillars by means of the special systems placed at the ends.