Scissors lift on composite slab

[tw]

Anyone ever run into trouble with scissors lift (or similar) loading on composite slabs? Do you specify an allowable wheel load or similar in construction docs?

tw

 

[csd72]

Some firms do but most dont.

This is considered means and methods and therefore not part of the building design. If it doesnt work then you just need to provide enough shoring so that it does.

refer:

http://www.njb-united.com/usd/ddds/data33.pdf

 

[MiketheEngineer]

Some of those lifts can be pretty heavy,..

Check the floor or shore it as suggested.

 

[gwynn]

I agree with csd. Construction loads should be checked by whoever is doing the construction engineering, not the designer. If it's a design-build partnership this may be required, however; maximum loads generally aren't very useful as higher loads can and are used in locations which cause lower slab stresses.

 

[csd72]

You also have to realise that it is not a single wheel load in isolation - there are 4 wheel loads. How far apart are they? Will there be a second scissor lift? e.t.c.

If you do a calc on this ask them for the specific scissor lift that they plan to use so that it can be allowed for.

It also needs to be ensured that the stacking of materials is not detrimental to the slab also.

 

[RonRoberts]

Visit

http://www.njb-united.com/usd.htm,

near the bottom of the page they have some Example Calculations that should be helpful to you.