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Anchors for fastening to floors and walls
Most fixed mechanical systems have to be fastened to a floor or wall.
The notes below relate to the general design principles involved in designing and specifying these
fasteners. These notes are rule of thumb notes for initial guidance-- It
is important that final design details should only be fixed using suppliers literature
and following consultation with the suppliers and the relevant structural /civil engineers.
Ideally mechanical equipment is fastened to cast-in blocks, brackets etc which are cast in the walls and floor
during building construction. Large machines are often positioned on raised plinths for floor mounted
machines these should be at least 100mm above the normal floor level. These plinths can
include pockets into which special bolts are cast.
Structures, made of cut stone and cast concrete, made into shapes and fitted
up tightly together, or laid up with mortar or similar material, are
considered masonry structures. This type of structure is generally strong
enough to support engineering components using proprietory achors. These
should be drilled into the solid bricks or concrete blocks and not into the mortared
These are the lowest strength wall constructions and one should avoid mounting mechanical
equipment off masonry walls..Bonded anchors are preferred and torque controlled anchors should
not be used..
Note: More detailed information on this topic is found at Timber connections
There are a wide range of wooden wall options starting at thin lathes of wood to
walls made up of thick timber logs. Generally solid wood has significant
strength and mechanical components can be fastened to wooden wall to provide horizontal
support and some vertical support. However it is always recommended that
mechanical equipment is primarily supported off solid floors.
These are internal walls made from hardwood or plasterboard fastened to wooden structures.
It is not advisable to mount any engineering component of any significant mass to a partition
wall. The preferred option if wall mounting is required is to provide a seperate
support structure which is fastened to the wall and supported primarily off the load bearing floor.
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