HAPP 40
© 2013 HAPP Australia Pty Ltd
Version 8
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Site inspection and preparation
Additional information is available on line in our frequently asked questions page.
Customers are recommended to review this page at.
http://happ.com.au/faqinsthoist/
.
A copy of this page is included in this document, refer to the website for the most
current version.
1.
Depth of concrete
is impacted by the underlying soil structure - if you are
installing on top of shale you would require less thickness than an installation
on black clay soil.
Sites should have a depth of concrete of 150mm of 25MPA concrete which on
visual inspection is of solid construction. Sites that expect to have heavy
vehicles being loaded constantly would have a depth of 300mm of concrete.
Options for customers concerned with floor concrete thickness:
o
Install footings: Cut out a section of the floor with a concrete saw at a
distance of 800mm x 800mm around the base of the hoist to a depth of
300mm. Use reinforcement rods and 25MPA quality concrete in the
footings. Some customers have drilled reinforcement rods into the
surrounding concrete sometimes bonding with chemset fasteners for
added connectivity. This approach is the most common form of
extension as it is relatively quick to perform.
o
Extend the base plate with extension beams: 15mm X 30mm x 100mm
long bars are attached to the rear studs which serve to extend the
mounting point of the hoist out by an extra distance, reducing the
leverage of the loaded hoist. These beams are available from happ
stabilizer bars E1 and E2.
http://happ.com.au/miscellaneous/clear-floor-
stabilizer-bar-cfsb/
. http://happ.com.au/miscellaneous/floor-plate-
stabiliser-bar-fpsb/
o
Use a HAPP big base plate which extends the base plate out to a
distance of 800mm X 800mm which then spreads the load out over a
broader area. These plates are available as HAPP big base plate.
2.
Column to column leveling
. Both columns should be the same height. This
seems to be obvious however some sites have been up to 25mm difference in
height. To measure this use a builders level to assess height of a level beam
from column to column. Any difference in the level beam height to floor is the
difference in height of the installed columns. The impact of this is that the
lifting carriages and arms will be at different heights which will impact the
function of connecting the car and safety locks. Small differences will be able
to be compensated with the adjustment in the balance cables for the hoist and
the adjustable pads supplied with HAPP hoists.
Options for customers concerned with column to column level:
o
In many cases the addition of a spacer plate on the lower side will
address the problem.
o
In some cases the floor may require a leveling layer of concrete with the
concrete being etched and then having a level layer of concrete.
Consult a concreter to ensure the concrete will bond to the existing
surface.
