One-Way Slab (Suspended Slab) With Metal Deck Design under Wheel/Vehicle Loads
One-Way Slab (Suspended Slab) With Metal Deck Design under Wheel/Vehicle Loads
(OP)
Are there any references I can follow to learn/design a slab under wheel loads?
In my case, I have a concrete slab with a metal deck supported by structural steel beams. This floor will see vehicle loads and I want to design the slab for moment & shear under a concentrated point load.
Any tips are greatly appreciated.
In my case, I have a concrete slab with a metal deck supported by structural steel beams. This floor will see vehicle loads and I want to design the slab for moment & shear under a concentrated point load.
Any tips are greatly appreciated.






RE: One-Way Slab (Suspended Slab) With Metal Deck Design under Wheel/Vehicle Loads
RE: One-Way Slab (Suspended Slab) With Metal Deck Design under Wheel/Vehicle Loads
RE: One-Way Slab (Suspended Slab) With Metal Deck Design under Wheel/Vehicle Loads
RE: One-Way Slab (Suspended Slab) With Metal Deck Design under Wheel/Vehicle Loads
RE: One-Way Slab (Suspended Slab) With Metal Deck Design under Wheel/Vehicle Loads
https://bookstore.transportation.org/category_item...
Also, if you are looking for a design example I would recommend Design of Highway Bridges: An LRFD Approach by: Barker and Puckett. This is the book I used in grad school for my bridge engineering class. It has some pretty thorough examples for deck and beam design that follow the AASHTO specs.
http://www.amazon.com/Design-Highway-Bridges-LRFD-...
Hope this helps
RE: One-Way Slab (Suspended Slab) With Metal Deck Design under Wheel/Vehicle Loads
Your fundamental questions and your (lack of) apparent preparations (no references, requests for internet advice and basic loadings of a vehicle over a complex suspended platform in midair) do not present strong arguments that you are able to complete such a design safely for the public to walk under, work under, or park on such a cantilevered slab.
RE: One-Way Slab (Suspended Slab) With Metal Deck Design under Wheel/Vehicle Loads
Here's a Canam Example: Link
Attached is a thoroughly unvetted spreadsheet that a colleague produced for me.
Two things to watch out for:
1) SDI recommends against using the metal deck for dynamic loads such as traffic. That leaves you with just the concrete slab and any rebar/WWM to work with.
2) I personally have encountered a disastrous situation where I allowed forklift traffic on an exposed deck and it cracked all to hell over the supports. If the deck will be exposed in service, consider the use of meaningful amounts of top steel.
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.
RE: One-Way Slab (Suspended Slab) With Metal Deck Design under Wheel/Vehicle Loads
I have followed USD (United Steel Deck) provisions in determining the effective width (one for shear and one for moment) and checked the one-way shear. However, since my truck loads are very high (~170kN with load/dynamic factors) even "d" away from the face of my beam I am having a lot of trouble. There is roughly a failure ratio of ~1.7.
Is there any specific areas in the Canadian Bridge Code (CSA-S6) that specifically deal with this case?
RE: One-Way Slab (Suspended Slab) With Metal Deck Design under Wheel/Vehicle Loads
RE: One-Way Slab (Suspended Slab) With Metal Deck Design under Wheel/Vehicle Loads
The existing portion is already damaged and has only a 200mm thick slab, and clearly will have issues.
I just want to confirm I have the right methodology going forward (using the effective width method).
RE: One-Way Slab (Suspended Slab) With Metal Deck Design under Wheel/Vehicle Loads
RE: One-Way Slab (Suspended Slab) With Metal Deck Design under Wheel/Vehicle Loads
1. E=(4/3)*X + d
2. E=bm + (1-X/L)*X (where bm = width of wheel + 2*concrete slab depth, X = location of load from edge of slab, L = span of beam)
I am not sure which is more appropriate, but the first gives a more conservative value.
RE: One-Way Slab (Suspended Slab) With Metal Deck Design under Wheel/Vehicle Loads
I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.