Our Projects


TES-İŞ carries out construction applications with high quality and engineering science. In this way, TES-İŞ has all kinds of information, infrastructure and equipment to implement the following types of structures.

  • Homes
  • Industrial Buildings
  • Bridges (Short span)
  • Retaining Structures
  • Warehouses, Water Tanks, Silos and Hangars
  • Pools
  • Towers
  • Sports Facilities and Stadiums
  • Infrastructure
  • Ancient Work (Restoration and Reconstruction)

Concrete and Steel Structures

Our company has an experience for industrial structures and has completed factory projects responded to necessary of some important sectors like plastics, textile, electronics, metal etc. TES-İŞ is the wanted company for industrial structures because our applied exactitude, produced special solutions and rapidly building techniques for especially heavy loaded industrial structural projects.

Structural Evaluation

Structural evaluation studies done according to the evaluation criteria of existing buildings against earthquake published by FEMA (Federal Emergency Management Agency) and TDY (Turkish Earthquake Code) standards. In order to prepare the strengthening project of a building, a strengthening strategy depending on the performance expected from the building is determined. Taking into account the performance level that will be evaluated according to FEMA, strengthening calculations of the existing building are performed and the most appropriate strengthening project is prepared.

  • Increased Service Loads (change of purpose of use)
  • Determination of structural behaviour against earthquakes
  • Use of weak concrete or insufficient reinforcement in the structure
  • Life of the structure
  • Getting the structural projects and survey study
  • Compilation of data for the building
  • Structural tests (according to BS1881, AC1228.2R)
    • Determining concrete strength using Schmidt Hammer (According to ASTM C 805)
    • Determining the pulse velocity of sound in concrete and modulus of elasticity of concrete using Ultra-sonic equipment (According to BS1881)
    • Taking core sample from the concrete and correlating with ultra-sonic results
    • Rebar control in critical elements using profometer
  • Soil investigation
  • 3rd-dimensional structural analysis
  • Cross sectional calculations and design of sections
  • Preparing conclusion and suggestions report
  • Preparing strengthening project if necessary
  • Performing strengthening applications

Repair and Strengthening

Repair activities to ensure that a damaged structure continues to operate smoothly will also extend the service life of the structure.

Strengthening Techniques

  • Strengthening on system base: Adding reinforced concrete structural walls to the system
  • Strengthening on element base: Steel bracing, concrete jacketing, shotcrete, strengthening with FRP’s
  • Decreasing earthquake effects: Soil improvements.

FRP (Fiber Reinforced Polymers) systems have become widespread recently as an alternative to classical techniques for strengthening the reinforced concrete buildings. FRP systems, which are used as additional reinforcement externally bonded to reinforced concrete elements, provide important advantages over other classical strengthening techniques. FRP composites,

  • are light: Do not cause additional load to the building.
  • are applied easily: Applied more easily and faster compared to other techniques and the building can continue service during the work.
  • don’t became corrosion: Although the alternatives, steel and reinforced concrete, are affected by corrosion, FRP systems are not corrosive.

The strengthening design and application with FRP is done according to the principles of the 440 standard published by ACI. The most recent researches and applications worldwide with this technique are followed and applied by TES-IŞ.

  • Chemical factors are an important threat during the last century In these factors Corrosion (Carbonation and Chloride Pollution) and Alkali Silica Reaction cause important damages on the structures
  • Under the insufficient and wrong design item use of insufficient reinforcement, prefer light concrete class, deficient geological study, design faulty main structural members, dense reinforcement insufficient details and definitions for steel designs and revisions in codes can be listed. In this case it is necessary repair and strengthening
  • Place the wrong reinforcement according to drawings, faults in workmanship, insufficient concrete cover, wrong form applications, cracks caused by inadequate curing, uncontrolled welding applications in-site open area for steel structures, insufficient thickness of weld, steel fatigue, insufficient corrosion protection for steel are defined as Construction Deficiencies. While any construction deficiency was determined it is necessary to repair and strengthen.
  • Use of Faulty Material is also a factor to repair and strengthen in structures. In reinforced concrete structures inappropriate sand, aggregate and cement, chemical additives wit chloride, high water/cement ratio, concrete and reinforcing steel out of specifications, bolts of poor quality in steel structures are factors in Use of Faulty Material item.
  • It is necessary to repair and strengthen that Mechanical Exterior Factors impact (especially bridges), overloading, fire effect and corrosion are caused on the structure.
  • Freezing-thawing, changing in temperature, acidic rains and wind factors are Atmospheric Factors cause repair and strengthening in the structure as important factors.
  • Moreover Earthquake, natural disasters, geological effects, underground water flows or insufficient maintenance are also important factors to repair and strengthen for the structures.