Reinforced concrete beams

  • Reinforced concrete beams

    Use and technical conditions

    Scope of application:

    Precast reinforced concrete beams are mainly used for bridging openings in building structures.
    The beams required are selected according to the gauge of the beam cross-section, the opening
    to be bridged, and the load on the beam.

    Standards:

    The beams must be designed in accordance with:
    EVS-EN 1992-1-1:2005+NA:2007
    The beams must be manufactured in accordance with:
    EVS-EN 13225:2013

    Storage and transport:

    Mountable reinforced concrete beams to be assembled are stored on a tight horizontal substrate.
    A supportive squared timber is placed under each end of the beam (e.g. 100 × 100 mm). The
    maximum distance of the supportive squared timber from the beam ends is 300 mm. The beams
    are transported and stored in a single layer.

    Lifting:

    Mountable reinforced concrete beams may only be lifted from hooks designed for this purpose.
    Both traverse and slinging devices can be used for lifting. When lifting with slinging devices,
    care must be taken to ensure that the angle of inclination of the slinging devices, measured from
    the horizontal surface of the beam, is not less than 60° and not greater than 90°.

    Montage:

    Mountable reinforced concrete beams are supported horizontally on the structures. The beams
    have their own fixed lower surface and upper surface. The nominal length of beams for
    supporting structures shall be at least 300 mm. The beams are supported on a layer of liquid
    mortar to achieve an even support surface.

    Environmental conditions:

    Mountable reinforced concrete beams are designed to work in dry or permanently wet
    conditions. Environmental class XC1 – concrete for indoor use with low humidity; concrete
    that is constantly submerged. When storing beams outdoors in sub-zero temperatures, the
    environmental class is XF1 – moderately saturated with water, without antifreeze.

    Loads:

    Mountable reinforced concrete beams to be assembled are designed to take on vertical loads
    applied onto the beams. The beams are designed to work according to a single span simple
    beam scheme. The use of beams as cantilever beams is prohibited. The load bearing
    capacities of the beams have been designed considering that permanent loads represent 70%
    and variable loads 30% of the total loads on the beams.

    Product marking:

    raudbetoontala-pilt