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post tension: the forces considered as outer force since pre tension forces are internal forces.
no matter how big the concrete slab is, it will never float
the structure floating around un the cell are called This answer is incoherent or incomplete
Types of raft foundation are 1. Solid slab raft 2. Beam and slab raft 3. Cellular rafts
yes
In flat slab you save time formwork of beams.
All of Earth's plates move because of convection in the asthenosphere, and slab push and pull in the lithosphere. Slab pull causes the lithosphere to slide beneath another plate into the asthenosphere, while slab push helps the slab move away from the ridge toward the slab pull.
Pouring a concrete slab is the pouring of a fresh unset concrete mix into a prepared area, where it is finished by floating etc to give the required surface, and it sets to form a slab.
Slab on grade,due to specific site conditions when needing a basement.
Cement slab houses allow more humidity through the pores of the floor than subfloor foundations. This is because the slab is usually directly constructed on the ground. A moisture barrier is required for most installed flooring, such as wood, ceramic etc.
In laymen's terms, yes. Many people use the terms Slab-on-grade & Floating Slab interchangeably. However, architects, engineers, and construction workers may have a more refined interpretation. Most commonly, a Slab-on-grade construction refers to a foundation in which the a concrete slab (also most commonly thickened at the perimeter) rest directly on grade (aka ground). Where as a Floating Slab foundation refers to a concrete slab resting directly on the grade independently placed within a stem wall (aka foundation wall), which extends down to the depth of the local frost line, running around the entire perimeter. The walls of the building/structure are then built upon this "stem wall". This latter type of construction creates a 'heat bubble' so that the floor is not as subject to the expansion due to frost and secures the structures walls by being supported below the frost line.
Not likely to be three foot thick everywhere, but only around perimeter of foundation.