THE TREATMENT OF
THE BOTTOM PLATE
An anti-rust primer is always distributed on both sides of the bottom plate of the MTR® A Beams while the plaster adhesion primer is applied only on the visible surface. In this way, the protection of steel increases and the surface is ready for plastering.
The bottom plate of MTR® A beams is always primed with anti-rust primer on both sides, and resin adhesion plaster only the visible part to be plastered.
Treatment and final coating
RUSTPREVENTER – anti-rust primer
PLASTER – anti-rust primer and adhesion primer
COATING – anti-rust primer
ROUGH PLASTERING – on demand
PROTECTION at REI (fire-resistance rating) – We use the MTR® C Beam – MTR® T Beams with appropriate bottom concrete cover. MTR® A Beams with plasterboard fire protection, heat-resistant plaster or intumescent varnish.
COR-TEN STEEL – on demand, for the bottom plate and the lateral containment lamination of the MTR® A Beams.
When the coating is required, as in the case of a predalle floor slab or false ceiling, the plate only receives the anti-rust primer.
The MTR® A Dropped Beam is subject to the same treatment of the MTR® A Flat Beam: beside the plate, also the beam-ends are visible so they need to receive the primer and, eventually, the plaster adhesion primer.
The bottom plate of the MTR® A Spandrel Beam is subject to the same treatment of the MTR® A Flat Beam (only primer or primer + plaster adhesion primer) while the ends receive only the primer since, once the work will be finished, they will be protected by an exterior primer.