Warehouse Truck Loads?

[Wazk]

I have a warehouse slab-on-ground that needs to be designed as suspended slab. Just wondering what loads should I use for trucks? I am designing to Australian Standards.
I am not a bridge guy so have no AS5100 on hand. Currently the slab spacing is roughly 3mx3m. I believe the worst case is one wheel at the centre of the slab? Can anyone please help me on how much it should be?
Thank you.

 

[Retrograde]

This might help:

https://www.rms.nsw.gov.au/document...ocus-on-freight/heavy-vehicle-truck-chart.pdf

 

[Wazk]

https://www.rms.nsw.gov.au/documents/business-indu...[/URL]]

Thank you. I can see there are many different trucks. Does Code specify what maximum loads or trucks to be used for for warehouse in particular? Does 80kN per wheel sounds ok to you?

 

[Retrograde]

Actually this is what 5100 states:

 

[Wazk]

Thank you very much!
Just want to confirm if I understand it correctly. So for A160, 160kN is the total for 2 wheels, meaning 80kN each wheel at 2m spacing laterally, While 360kN in M1600 is for 6 wheels, meaning 60kN per wheel with given spacing plus 6kN/m / 3.2m = 1.875kPa UDL. Correct?

 

[dhengr]

Wazk:
How do we know you (they) don’t mean a forklift truck? If it is a SoG (slab on grade), why would it be designed as a suspended slab? You say…, “Currently the slab spacing is roughly 3mx3m.” Does that mean an actual slab size, the spacing of control joints in a larger total slab, or some beam support spacing? You say…, “I am not a bridge guy.” What kind of an engineer are you, and what was your engineering training? What kind of conc. slab design have you actually done, and what ref. matr’l. do you have on hand? Actually, the worst case loading for a SoG is a wheel load at the slab edge or a slab corner, because the slab is not well supported by surrounding conc. slab.

 

[Retrograde]

Yes that is the way I interpret it.

 

[Wazk]

Thank you very much

 

[Wazk]

Sorry I didn't make it clear. The trucks are not limited to forklift only.
The slab is in a slope site with part of it on ground only. And even with that slab-on-grade part it is deep fill underneath.

That 3mx3m spacing is the beam to beam spacing with piers at each intersection. So it is basically like a typical concrete frame.

I have done residential & commercial slabs without moving loads... I have AS3600, AS4678 and so on but no AS5100..

 

[rowingengineer]

Fully Laden trucks driving in warehouses is a rare design requirement. Generally you would have loading docks or similar for trucks to unload at Before entering said building. Before I got to far in design I would confirm the exact use and nature of the building.

 

[Wazk]

Thank you. That was actually what I wanted to know. I would expect the vehicle in the warehouse to be not heavy by saying 'warehouse in particular'. From the architectural plan it has the a loading bay inside the building. That said, even if the trucks unload before entering the building, I have driveway to design as suspended slab as well.

 

[JLNJ]

Forklift axle loads often far exceed those of over-the-road trucks.

 

[EdStainless]

Did a floor for a steel warehouse once. 40,000# coils and a fork truck that weighted double that.
I didn't know that you could put that much steel in a slab.

= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, consulting work welcomed

 

[ClearCalcs]

> Forklift axle loads often far exceed those of over-the-road trucks.

+1 for this. Forklifts are insanely heavy and have essentially no suspension, so they have tremendous impact loads. I wouldn't be surprised if they governed at least locally.

I remember a parking garage project where the contractor loved showing off how he could pop expansion joints right out of their slab by driving over them with his forklift. Driving a fully loaded cube truck on it wouldn't make them budge. We told him to wait until he was done with the forklift to reinstall the joints, but he was always happy to reinstall them and break them again with a big grin on his face :-D

-Laurent