Precast slab with truss

[Anonymous]

Hello!

How can I design a precast concret slab with truss as the picture? 

Thanks,

Marcelo Rodacki.

[Rafacascudo]

Só a lajezinha com os Ferros formando a treliça ??

Only the small slab with the steel bars froming the truss?

[Artur.Kosakowski]

Hi @Anonymous

Robot doesn't have the functionality for designing reinforcement for such types of slabs.

If you find your post answered press the Accept as Solution button please. This will help other users to find solutions much faster. Thank you.

[saclovitzky · Accepted solution]

Precast slab with lattice girder is a proprietary system. I would suggest  to look to the existing load to span table according to manufacturer's specs rather than modelling it.

Normally the lattice girder will provide rigidity to the panel and enables it to bind easily with in-situ concrete which is poured later on site.

Typically you have a 50 to 100 mm thick precast slab and 75mm thk screed that will act compositely. You can call the manufacturer to suit your needs.