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Vulcarft 2 C Conform

Vulcarft 2 C Conform

Vulcarft 2 C Conform

(OP)
A little confused about the three load tables they have for this non-composite deck.

1)    Max construction load: I understand that, this is supposed to be with wet concrete.
2)    Reinforced concrete allowable loads: I understand this one too, this is the capacity after concrete has cured.
3)    Allowable uniform load: This is supposed to be the capacity the metal deck alone will carry. I don't understand this table, why do I need it, I already have the above two for during construction and after construction capacities, why do I need to check this one?

Looking forward to some guidance from all the experienced folks here. Thanks,
 

RE: Vulcarft 2 C Conform

Remember that C is a non-composite deck.

The first table you mention is obvious- don't want "ponding" or failure of the deck when concrete is wet.

The second table is the capacity of the concrete slab alone- i.e. deck does not come into play.

You could have a case where you have a very lightly reinforced concrete slab (maybe just a wearing surface) and you want your structural capacity to be provided by the steel deck- there's your third table

RE: Vulcarft 2 C Conform

(OP)
frv-Thanks for the clarification.

RE: Vulcarft 2 C Conform

The third table can also be used for "man" loads.  Don't forget to check the maximum span for "wet" concrete where shoring may be required.

We get 2 or 3 calls a year for an emergency shore when the EOR forgot to tell the contractor to shore the deck until the concrete has set.  By the time we can get there - it is usually too late.

RE: Vulcarft 2 C Conform

(OP)
@ Mike:

Continuing on your explanation of table #3: Do you think that if its even a good idea to use a form deck like this alone to carry the load? Because a few months back I went for some balcony inspections, and the form deck under conc was just gone due to corrosion in most places. Or does this not fall under form decks?

Thanks
 

RE: Vulcarft 2 C Conform

Like all structural elements - they must be maintained.  If that deck was designed as a composite structure - well it no longer fills that need.

Will it fall down.  Maybe not - but if it really got loaded to the original design loads - it just might.

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