Slab connection due to temperature

[Bme02]

Hello,

My one-way slab is exposed as shown below. What do you recommend for the connection to the capping beam for the consideration of temperature. I am thinking not having any connection so the slab will be able to rotate freely? Any issue with this?

 

[Tomfh]

Tie it

 

[Bme02]

If I tie it by using Z bars, won't it restraint the slab and cause cracking issue under temperature?

 

[hokie66]

What supports the left side of that slab? And what supports the capping beam?

 

[Bme02]

Slab is supported by the LHS beam which connects to RC columns. Under the capping beams are piers.

 

[hokie66]

So that slab is cast monolithically with the supporting beam? The solid line fooled me.

So that is a contiguous or secant pile wall. Does the wall rely on the slab for lateral support? If so, it would need to be tied. If not, let it slide, in which case, some type of bond breaker would be helpful.

 

[Bme02]

Yes to the first question and no to the later one
Secant pile wall is not needed for lateral. But, what if I tie the slab to the capping beam regardless? Is it a concern for temperature?

 

[dik]

Why not extend the beam reinforcing into the slab and have horizontal dowels going into the slab from the beam?

Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?

-Dik

 

[Bme02]

Do you mean making the capping beam the same level as the slab and have shear connection instead of bearing?

(Sorry I just saw you attached a picture)
I did the similar connection for slab to the LHS beam.
But it restrains the slab and thus cause problem for temperature if I have this connection for both ends or am I overthinking?

 

[dik]

allowance for movement is taken at the building edge.

Rather than think climate change and the corona virus as science, think of it as the wrath of God. Feel any better?

-Dik

 

[hokie66]

So if the piles are not contiguous, what retains the soil? Restraint is always a concern, more for drying shrinkage than for temperature. So if you don't need the slab to brace the top of the piles, as I said, I would let it slip.