11
English
Oxford
®
Mermaid & Ranger
8. Installation of the Base Plate
Concrete Floors:
Establish with your architect the structural integrity of the concrete floor, bearing in mind the
stresses imposed by the Mermaid. In brief, a sound floor of at least 120 - 150mm thickness of
good concrete is ideal. An element of screed is acceptable, as long as the expanding section
of the fixing bolts are in sound concrete.
Drill three 16mm diameter x 125mm deep holes in the positions marked out from the base
plate. Locate the base plate over the holes and insert the expanding bolts.
NOTE:
The expanding bolts which are supplied with the lift are designed to be fitted fully
assembled,
DO NOT
take them apart. Tighten the bolts fully with the Allen key supplied.
IMPORTANT NOTE:
Not all concrete floors are constructed in a manner which allows for this
type of fixing. Floors which are constructed from precast beams with block infill do present a
problem which cannot be overcome easily. If your floor is of this construction, or you suspect it
may be, consult an architect/structural engineer for guidance.
Wooden Floors:
Establish with your architect the structural integrity of the wooden floor, bearing in mind the
loading and stresses imposed by the lift. There are many forms of wooden floor construction.
The following information should be regarded only as guidelines for your installer, whose
knowledge and skill will be an important factor in the secure and safe installation of the lift.
Not all wooden floors are constructed in such a way to allow for lift mounting without extensive
strengthening. If in any doubt consult an architect/structural engineer.
For the most common floorboard construction, an underfloor bracing kit is supplied as a
standard pack. It may not suit all applications. See the illustration on the following page.
If the location of one or more of the base plate fixing holes coincide with a joist, then a heavy
wood screw or coach bolt can be used in conjunction with the bracing kit.
Additional holes in the base plate allow for extra location points on wood floors.
Floorboards in the immediate area of the base plate should be secured to the joists with heavy
wood screws.
It is important that fixing should be carried out on sound and suitable floors only.
Chipboard and similar lightweight floors will need to be reinforced locally. The advice of
an architect/structural engineer should be sought to establish the amount of reinforcing
necessary.
Joists can be reinforced by fixing strengthening sections alongside and between existing
joists.
Floors can be strengthened by additional local fixing to the existing joists and/or by using a
heavy marine plywood inset.
If in doubt, seek professional advice.
Summary of Contents for Oxford Mermaid
Page 8: ...8 English Oxford Mermaid Ranger 5 Oxford Mermaid Electric Illustration ...
Page 29: ...29 English Oxford Mermaid Ranger ...
Page 30: ......
Page 31: ......
