Post TensionING

The other is bonded system that consists of3 Types of anchorage systems (3BS13,4BS13, 5BS13) with the multistrand flat ducts.

 

The C-Post Co., Ltd uses the “ANCHOR post-tensioning system” Developed by Dr. BijanO. Aalami and our company.

 

The strands are individually gripped in one flat anchor head unit that consists of Block and Guide. The strands are stressed individually by means of mono strand jack and their prestressing forces shall be transmitted by means of a flat type anchorage system. The strands are contained in one flexible flat duct which is made of corrugated galvanized metal. To ensure corrosion protection and to give adequate bond strength, the tendons are filled with suitable cement grout mix after the complete stressing of the strands.

 

The same anchorage for stressing anchorage can be used as dead-end anchorage in which case the wedges are presented in the anchor head unit by applying nominal force to the strand using the stressing jack.

 

Alternatively, an onion dead-end anchorage can be used with a simpler solution and more cost-effective. In this case, each strand is formed into an onion shape by means of a special forming jack.

Slab Anchorage

The other civil structure such as bridges, silos, etc. is normally applied by the multi-strand systems. The system is normally adopted for bonded tendons that consist of a bundle of the strand with a nominal diameter of 0.5”(12.7 mm) or 0.6” (15.2 mm). The number of strands per tendon can be from 7 strands up to 19 strands. The tendons are contained in one round duct which is made of corrugated galvanized metal.

Multistrand Anchorage

Our Company

The C-Post is one of the leading Thai companies in the design, production, and installation of post-tension slabs. The company is operated by a group of engineers and technicians who have had high knowledge and experience in his business for many years. With continuous technical and service improvements to meet our customer satisfaction. We also would like to make sure that our products and services will optimize your needs.

Benefits of Post Tensioning

  • Reduction in slab thickness
  • Reduction in beams
  • Reduction in slab weight 
  • Savings on vertical structural bearing members and foundations
  • Savings on total building height, (1 floor gained each 20 floors)
  • Large spans (and reduction of columns)
  • Reduction of construction volumes and consequent energy needed for heating, cooling living spaces
  • Reduction of erection times
  • Reduction of formwork sets
  • High repeatability from floor to floor/quick rotation of formworks
  • Possible earlier removal of formworks
  • Easier material placing and handling
  • Reduction of steel reinforcement and arrangement simplification
  • Better waterproofing due to concrete compression
  • High deflection limitation due to concrete shrinkage and creep
  • Different opportunities for ceiling final finishes
  • Increase in free space available, more architectural opportunities
  • High limitation of crack widths
  • Improvement of durability and concrete behavior
  • Improvement of serviceability for all structural members
  • Improvement of construction ability

Post Tensioning System

The C-Post Post-tensioning System is designed and manufactured under the quality program to meet international standards. The PT system comprises a complete range of post-tensioning components including:

 

  • Unbonded grease and P.E. coated P.C. strand
  • Bonded P.C. strand
  • Post-tensioned anchorage components for bonded and unbounded tendons
  • Tendon support chairs
  • Smooth flat galvanized iron ducts for flat and round tendons.

Slab-Post Tensioning System

There is 2 system for the Post-tension slab. One is an unbounded system that consists of cast iron (FCD45) anchorage an mono strand with a nominal diameter of 0.5”(12.7mm.) inserted in PE. Duct with grease

Post Tensioning System

ESFPT has been working in Buildings as well as bridge structures and it has been nominated by world-class systems for its applications in the respective fields.

Equipment & Machinery

Types of Post Tensioning 

❖  Raft Foundation
❖  Normal PT Slabs
❖  Lightweight Slabs content to follow
❖  Voided PT Slabs
❖  U-Boot System + PT System