Ridganaka

Ridge Mounted Fall Arrest Anchor. Ridganka is a permanently fixed, secure fall arrest anchor specifically designed to be mounted at the ridge of a pitched roof.

SAFETY FIRST.
RIDGANKA has been specifically designed to improve the safety of users working on pitched roofs. The safest position for fall arrest anchorages is above the position of the user. On a pitched roof this means that, where possible, the anchorage should be at the ridge. RIDGANKA has been specifically designed for installation at this position. Designed and Tested to EN795:1996, BS7883:2005 and ISO 14567

RIDGANKA is manufactured from high quality carbon steel. All components within the roof space are galvanised to BS729. The eyebolt which projects above the ridge tile is the well proven Class ‘A1’ steelwork fixing anchor device to EN795 (formerly
to BS5845), produced in grade 316 stainless steel. Installation is by means of a special clamping arrangement directly on to either the ridge batten or the apex of the sloping truss assembly. Waterproofing around the eyebolt is by means of both lead
flashing and silicon sealant.

RIDGANKA is designed in accordance with the European Standard EN795 and has met the testing requirements of that document. It also withstands the BS7883 test force of 10kN along the slope of the roof without distortion.

RIDGANKA is designed for single user applications only.

The following table shows the sizes available, the maximum and minimum timber sizes to which they may be attached and the type of roof construction with which they may be used. When ordering please state whether a single point anchorage or a structural anchor for horizontal flexible lines is required.

Installation.
The position of RIDGANKA should always be approved by an architect or structural engineer. Ensure that the roof member to which it is attached is capable of withstanding the forces generated if a fall is arrested. Where necessary the timber may be strengthened by nailing and gluing additional timber to the beam/truss for at least 500mm each side of the RIDGANKA.

After drilling (trepanning) a suitable hole in the ridge tile, the pedestal is inserted through this hole and RIDGANKA is fixed by clamping to the ridge batten or the apex of the roof truss as appropriate. The design of the RIDGANKA clamp and pedestal permit adjustment to ensure that the eyebolt is installed at the optimum height. It is, however, important that the maximum height of the eyebolt above the top ‘U’ bolt should not be exceeded. Special versions of RIDGANKA can be supplied where additional height is required. Any gap between the hole cut into the ridge tile and the pedestal is sealed using silicon sealant and lead flashing is positioned over the pedestal, under the collar of the eyebolt, to produce a double waterproof seal.

Drawing RRA104 shows RIDGANKA Type RIDGE-RB attached to ridge batten.

Drawing RRA105 shows RIDGANKA Type RIDGE-ST attached to sloping truss assembly.

(This document is also available as an Adobe .PDF file. Click here to download).

Back to Product Index  I  Back to top