Minimum thickness of rcc slab i recommend is 5 125mm because a slab may contain electrical pipes embedded into them which could be 0 5 or more for internal wiring which effectively reduces slab depths at certain places causing cracking weakening and water leakage during rains.
Roof slab thickness.
The thickness of conventional slab is 4 or 10cm.
Exact specifications vary but most concrete roofs are several inches thick.
A concrete roof is exactly what it sounds like.
Standard asphalt shingles add very little thickness to the roof because a standard three tab shingle is about 3 16 inch thick.
You could also do a low mid rise with joists sheathing and a concrete topper 2 or gypcrete 3 4 or so.
For example the florida based company hurricane proof systems offers a 7 inch 18 centimeter slab of concrete in three layers.
For slab thickness it is advised to keep it at least 5 because at some places the slab depth can be less due to electrical pipes and internal wiring.
Slab roof of the conventional kitchen with a storage tank to provide about 0 2 m 3 of hot water of 50 65 c for various domestic purposes.
So a minimum thickness of 5 should be maintained.
In the conventional type of slab there is no need for providing column caps.
The reinforcement details for rcc roof can be categorized in two ways.
A solid slab of concrete capping the top of your house.
5 to 6 inches is recommended if the concrete will receive occasional heavy loads such as motor homes or garbage trucks.
Slab on ground 1 4 minimum thickness of diaphragms.
When installed however the shingles overlap doubling the thickness.
Conventional concrete slabs are square in shape and have a length of 4m.
With that in mind i ve seen slabs as thick as 16 18 due to column spacing.
1 3 minimum thickness of slab on the ground ubc recommends minimum thickness of concrete floor slabs supported directly on the ground to be 89mm whereas bcgbc4010a apply structural principles to residential low rise constructions determined minimum thickness to be 100mm.