
A threshold plate is a strip fastened to the floor beneath a door e.g. to cover the joint of two types of floor materials where they meet. Some threshold plates can also be used back-to-back to provide a two-way ramp over, for example, a shopfront.
Under the requirements of Approved Document M external and internal thresholds should be no higher than 15mm and incorporate chamfered or pencil rounder corners. Vertical elevations should be no greater than 5mm.
In addition are 2 mobility ramps (A025 and A050).
Raven seals suitable for applications under approved Document M are shown with the wheelchair symbol.


