Today, post-tensioning bars are primarily used for repair and strengthening projects or at the joints between concrete and steel structures, e.g. in the construction of wind power stations. The first ever structure to have been built with a prototype of the DYWIDAG Bar Post-Tensioning System was the arch-bridge Alsleben in Germany in 1927.

STRUCTURAL TECHNOLOGIES is the exclusive manufacturer of VSL post-tensioning products and construction systems in the United States. VSL systems have a well-earned reputation for their quality, reliability, and durability – and have been used throughout the world since 1956 to build, repair, and strengthen buildings, tanks, transportation and special structures.

Post Tension HDPE Flat Duct Post Tension HDPE Round Duct Post Tension Oval Flat Duct Galvanized Flat Steel Duct Galvanized Metal Round Duct ; Post Tension Duct Machine . Flat Duct Machine Corrugated Duct Machine Oval Flat Duct Machine ; Post Tension Stressing Jack . Monostrand Stressing Jack Multistrands Post Tension Jack Hydraulic Lifting Jack

Rayat Industries LLC is an engineering service company and delivers all the repair, maintenance, and engineering solutions. A team of qualified technicians, engineers, and supervisors are our strength in solving any hard tasks for years.

A post-tension slab consists of laying a grid of high-strength steel strands in bundles to form tendons. After casting, these strands are tensioned at the appropriate pressure to provide compression to the slab and increase its capacity.

A pioneer in post-tensioning, Freyssinet now offers a cutting-edge post-tensioning system combining performance and durability. Post-tensioning is a method of reinforcement employing high-strength steel strands or bars, which enable the existence of longer clear spans, thinner slabs and in many cases of structural systems that would otherwise be impossible due to either site constraints or ...

Construction Products. We manufacture precast concrete systems, provide post-tension solutions and supply concrete blocks. Drag. Precast Floor. Hollow Core slab. Post tension. ... Look around in 360° Look around in 360° Total Precast Buildings. Mega Prefab will design and build your concrete and steel building. Your factory, warehouse or ...

May 01, 1973· There are two main reasons for grouting the ducts of post-tensioned concrete members. One is to provide efficient bond between the prestressing steel and the concrete member so as to control the spacing of cracks at heavy overload. This increases the ultimate strength of a structural member. The other is to prevent corrosion of the prestressing ...

prestressing steel, the guaranteed ultimate strength (GUTS) of the system, and ... Material and component certifications. Ductile iron castings and prestressing steel must be from a previously authorized heat by Caltrans, otherwise test coupons or ... "Acceptance Standards for Post-Tensioning Systems…

Offering you a complete choice of products which include g i corrugated duct, galvanized duct pipe, corrugated round ducts, sheathing duct and post tensioning sheathing ducts. G I Corrugated Duct. Get Best Quote. Approx ... We are the leading manufacturer and supplier of Sheathing Duct for post tension and pre cast industries . Request Callback ...

post tension anchorage manufacturer/supplier, China post tension anchorage manufacturer & factory list, find qualified Chinese post tension anchorage manufacturers, suppliers, factories, exporters & wholesalers quickly on Made-in-China.com.

Post Tension. EURO POSTECH INTERNATIONAL uses International Pre-stressing Anchorage System for post-tensioning works all around the Middle East.Our system comprises of high tensile steel tendons that are placed within specifically profiled ducts in the concrete and is stretched after the concrete has hardened.

Williams’ Post-Tensioning System. Williams PreStressing / Post Tensioning Systems consist of high tensile steel bars available in seven diameters from 1” (26 mm) to 3” (75 mm) with guaranteed tensile strengths to 1027 kips (4568 kN). They are provided with cold-rolled threads over all or a …

The post tension slab is a combination of traditional slab reinforcement and additional high-strength steel tendons, which are subject to stress after the setting of concrete. Generally pre-cast elements where the strand or bar is stressed before the concrete being poured over it (no ducts used).

Suncoast Post-Tension Products and Services . Suncoast serves the commercial and residential construction industry, providing fabricated, unbonded post-tensioning materials and services for high rise and slab on ground applications. With Nationwide facilities, we have the largest footprint in the US.

You have a huge variety of products to experience with such as China Post Tensioning Strand listed above and its similar choices: steel strand, 12.7mm pc strand, low relaxation pc strand. Match them with the top quality Chinese Post Tensioning Strand factory & manufacturers list and more here.

Our post-tensioning strand is specifically manufactured to meet the demands of post-tension production in both residential and commercial applications. The post-tensioning strand is greased and coated for maximum debonding between the cable and the sheathing. The strand meets ASTM A416 and is available in both domestic and foreign manufactures. Strand sizes include 3/8″, 7/16″ and …

A post-tensioning tendon consists of strands, duct, and anchorages. Tendons of the multistrand VSL system may be made up of as much as 55 seven-wire strands of 15.7 mm (0.6“S) in diameter with a guaranteed ultimate strength of 1860 MPa. The prestressing steel applied corresponds to international standards EURONORM 138-79, ASTM A 416-85, BS 5896.

POST TENSION Caissons Forming Shoring Piling Retaining Walls Tools. Geotechnical Foundations Site Development Concrete Placement Concrete Contractors. PreCast Concrete Cast In Place Concrete Wall Panels Tilt-Up Cast Stone Stucco. Masonry Brick Block Rebar - Steel Anchors Prestress Concrete Post -Tension Concrete

In addition to the traditional post-tensioning system using bars, that is mainly geared towards geotechnical applications, building rehabilitation and strengthening, DSI offers a complete product line in strand post-tensioning (bonded, unbonded and external) as well as stay-cables being able to fully serve the post-tensioning construction.

Product Introduction Of The Aluminum Duct Our Aluminum Post Tension Duct is constructed using aluminum foil, PET and steel wire which prevents our product from corrosion and metal fatigue. Our aluminum flexible duct is with high degree of flexibility, which allows it to be easily connected.

The basic element of a post-tensioning system is called a tendon. A post-tensioning tendon is made up of one or more pieces of prestressing steel, coated with a protective coating, and housed inside of a duct or sheathing. A tendon will have anchors on each end to transmit the forces into the structure.

Post-tensioning. A pioneer in prestressing, Freyssinet now offers a cutting-edge post-tensioning system combining performance and durability. Freyssinet’s technical services design anchors, jacks and installation equipment, and also operate a test centre and a laboratory for the formulation of grouts.

Several systems exist with main components being: Bare Strands or Bars Steel Anchorage Assemblies (bearing plates and wedge plates); proprietary designs Plastic or Galvanized Metal Ducts Steel Wedges Typically multistrandsencased in grouted duct Bonded systems also known as grouted systems

Post-tensioning concrete with steel strand became a popular solution to deflection and weight in slabs in the US in the 1950s. Post-tensioning is an efficient method of concrete reinforcing that reduces mass while improving building stability and resistance to wind, gravity, and seismic forces.

The steel savings are made up of a 56% reduction in reinforcement steel offset by an 8% increase in post-tensioning. The PT steel represents only 7% of the material emissions and 4.9% of the total emissions but post-tensioning allows the whole project to reduce its global emissions by 37%.

Products and Services for Unbonded Post Tensioning For unbonded post-tensioning construction, PTC Inc leads the way by providing the highest quality of products in the industry including the GTI Zero Void Anchor system coupled with quality domestic or commercial steel strands.

High-Rise Post-Tension. As the largest unbonded post-tension specialist in America, Suncoast is the national provider with a local presence. We serve the commercial and residential construction industry, offering rapid response, technical support and highly rated, custom fabricated post-tensioning materials.

For the repair and modification of post tensioning (PT) systems as well as post-tensioned concrete structure repair and protection, STRUCTURAL TECHNOLOGIES offers highly specialized products and services including investigation, repair design support, repair and replacement components, corrosion protection products, strengthening solutions as well as new or replacement post-tensioning systems.

Apr 26, 2018· Post-tensioning is a form of prestressed concrete in which high-strength steel strands are cast into a concrete slab or beam and tensioned to a high degree of stress following curing. The tensioned strands are anchored at either end, resulting in …

“I’ve worked on many large construction projects using the HMI-STS anchorage systems (castings, wedges, barrels, and anchor blocks). These systems have been used in post tensioning of concrete floors in numerous buildings across Perth, including the new Crown Towers Casino, Pinnacles Apartments and 500 Hay Street.

Post-Tensioning: Steel tensioned after ... TENSIONING 1. Tension Strands 2. Cast Concrete – Bond strands to concrete 3. Cut Strands – Transfer force to concrete. POST‐TENSIONING 1. Cast Concrete with Duct 2. Feed Strands through Duct 3. Tension Strands ... Strategies for post-tensioned systems: - Install ducts in desired profile. COMMON ...

Laminated Veneer Lumber (LVL), connected by steel post-tensioning (see Figure 1). This timber connection technique [2] was adapted from post-tensioned pre-cast concrete systems [3; 4] 1 Michael Newcombe, 2 Stefano Pampanin, 3 Andrew Buchanan, Department of Civil and Natural Resources Engineering, University of Canterbury, Christchurch, New Zealand.