Joints In Reinforced Concrete Slabs

[engstructural]

I have a large slab with a combination on longitudinal and contraction joints. Within the slab are a number of gullies and aqua channels. The channels are in line and approx. 2m long with a 2m gap between.

Q. should I make sure a joint in the slab runs along the line of aqua channels as if they are placed in the slab they will create a weak area. Or can this be ignored as the floor slab has already been divided into small bays (approx. 6X6m)

 

[dik]

I would make the joints at the 'sidewall' of the channels. The channels will prevent the slab from moving and will be relatively 'fixed' at that location.

Dik

 

[RHTPE]

A detail showing how the "gullies" and "channels" are to be constructed would help.


Ralph
Structures Consulting
Northeast USA