ejotherm® STR U

Applications

Universal screw-in anchor for countersunk and surface fixed installation in concrete and masonry

• For all substrates (A, B, C, D, E)
• For all insulation boards
• For countersunk and surface fixed instalaltion
• For homogeneous surfaces and even rendering
• With European Technical Approval (ETA)

Properties

• Approved for all building materials
• Countersunk installation - EJOT STR principle with ejotherm STR cap for homogeneous surfaces and even rendering - quick and easy without milling dust
• Surface fixed installation using ejotherm STR plug
• Short embedment depths, high loads for maximum safety and economic anchor usage
• Permanent contact pressure
• Premounted screw for quick installation
• 100% setting control: the countersunk installation of the washer indicates safe anchorage

Technical specifications

• Anchor diameter: 8 mm
• Washer diameter: 60 mm
• Drill hole depth, countersunk installation h₁ ≥: 50 mm (90 mm)
• Drill hole depth, surface fixed installation h₂ ≥: 35 mm (75 mm)
• Anchorage depth h_ef≥: 25 mm (65 mm)
• Screw drive: TX30
• Point thermal transmission χ 
  countersunk installation: 0,002 W/K
  surface fixed installation: 0,002 W/K
• Use categories acc. to ETA*: A, B, C, D, E
• German DIBt approval: Z-21.2-1769
• European Technical Approval: ETA-04/0023

Values in parentheses: anchoring in aerated concrete (use category E)
*Specification according to ÖNORM B 6124 for concrete, solid brick and vertical brick
 

Characteristic loads:
 

Building material class A:

• Normal weight concrete C 12/15 acc. to EN 206-1: 1.5 kN
• Normal weight concrete C 16/20 - C 50/60 acc. to EN 206-1: 1.5 kN
• Pre-cast concrete panel C16/20 - C50/60: 1.5 kN

Building material class B:

• Clay bricks (Mz) acc. to DIN 105: 1.5 kN
• Solid lime sandstone (KS) acc. to DIN EN 106: 1.5 kN
• Solid masonry of lightweight concrete (V) acc. to DIN 18152: 0.6 kN

Building material class C:

• Vertically perforated clay bricks (Hlz) acc. to 105: 1.2 kN
• Vertical coring reference bricks (Hlz) acc. to ÖNORM B 6124: 0.75 kN
• Sand-lime perforated (KSL) acc. to EN 106: 1.5 kN
• Lightweight concrete hollow blocks (HbL)acc. to DIN 18151: 0.6 kN

Baustoffklasse D:

• Lightweight aggregate concrete (LAC): 0.9 kN

Building material class E:

• Autoclaved aerated concrete P2 - P7: 0.75 kN

For calculation of design loads the national safety factors have to be included (e.g. Germany: 3). Please observe the approval.