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Building Post Tensioned Slab

Building Post Tensioned Slab

 

Basic Concepts of Pre-stressing:


"Prestressed concrete is basically concrete in which internal stresses of a suitable magnitude and distribution are introduced so that the stresses resulting from external loads are counteracted to a desired degree. In reinforced concrete members, the pre-stress is commonly introduced by tensioning the steel reinforcement."

 

How PT Works:

 

P-T v/s R.C.C. ~ A Cost - Benefit Ratio:

  • P-T reduces the concrete volume by 10 to 20%
  • Cost of reinforcing is typically 20 to 30% less as compared to conventional reinforced structure.
  • Form work can best ripped off after 6-7days(as soon as stressing is completed),there by saving time & money by achieving project target completion before the due date.
  • Average bay(Column) spacing is 25 to 30 feet without increase in the slab thickness, thus saving construction cost.
  • Concrete Slabs are thinner and consequently lighter and lesscostly.
  • More clear Headroom obtained through P-T Assembly Installation. Cost Benefit in Electrical Conduits (per ft.) & relative consumption of accessories, fixtures, thereby enhancing uninterrupted electrical work.
  • For flats lab in 8m x 8m or 9m x 9m Grid, P-T costs approximately Rs.45 to 50 per sq. ft. with any kind of desired geometry availed better than R.C.C.
  • Since the reinforcement is protected, P-T reinforced structures have lower annual maintenance costs over time (life cycle costs).

 

Advantages of Bonded PT System:

  • Lighter and Slender members are possible.
  • Section remains un-cracked under Service load.
  • Less deformation improves serviceability.
  • Fast construction can achieved because scaffolding can be removed after stressing. l More aesthetic appeal due to slender sections.
  • Flat soffit reduces shuttering, plastering and painting cost.
  • Reduces building height.

 

Application:

  • High-rise buildings l Bridges
  • Silos
  • Tanks
  • Ground floor slabs, Raft Slabs
  • Ground Anchors
  • Railway Sleepers, Electric poles, Piles, Pressure vessels, Concrete pavement,
  • Shells, Folded Plates.
  • Concrete chambers in nuclear reactors.

 

PT Floor Slab System:

 

 

Post tension Slab Construction sequence:

 

 

Visual from Site - (Under Construction):

 

Post tensioned slab for govt official buildings.

 

 

Post tensioned slabs for parking.

 

 

Post tensioned slabs for malls, hotels & podium.

 

Post tensioned slab/beam for cantilever structure.

 

Completed:

 

Surya Treasure Island Mall, Bhilai (C.G.)

 

Sky Vistas Podium, Mumbai

 

 

Download Brochure 

 

Do you have any questions?

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Sanfield (India) Limited is the exclusive designers, manufacturers and installers of a wide range of High Performance, Specialized Construction Related Products, manufactured in Technical collaboration with various world renowned Companies.

Contact Info

  • +91-755-4233535
  • [email protected]
  • 13-A, D-Sector, Industrial Area, Govindpura, Bhopal - 462023, India