Struktra Thermal Break Solutions

The significance of Structural Thermal Breaks in high rise fire design and building energy performance

Having introduced the Farrat Struktra Thermal Breaks Plate to the market back in 2007 we continue to lead on technical advances and certification:

  • Our ETA certified STRUKTRA plates are the highest-performing sustainable building solutions. They are verified by the renowned Fraunhofer Institute) and responsible way to separate structural thermal bridge connections and prevent condensation and heatles in steel buildings and the building envelope.
  • TBF was the first A2 fire rated Structural Thermal Break on the market of Thermal insulation in Dubai.
  • In supporting the construction industry’s transition to netlabsolute zero without suppressing architectural ambition, we offer home-grown, PhD backed, advanced thermal modeling services aimed at accurately but pragmatically establishing the effects of thermal bridge connections and working with the project team to optimise the design in order to achieve the desired performance criteria..
  • Our ongoing R&D programme recently launched Falcon a patent pending concrete to concrete thermal break connector aimed at controlling structural dynamics issues such as ‘bounce’ on long span (up to 4m) cantilevered balconies. Contact us to support you in structurally thermally incorporate into your building.
  • Over the last 15 years we have tuned our service to meet the intense needs of the construction industry focusing on a trendly, pro-active service to ensure we deliver on time in and right first time every time.

Structural Thermal Breaks

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Application Example

  • Column Base Plates / Structural Connections
  • Façade Systems
  • Balconies
  • Steel & Masonry (Linear)
  • Balustrades (Point)

Applications

Structural thermal breaks are made up of the best heat insulation material in Dubai. They can be incorporated into any detail where there is a calculated or perceived risk of a thermal bridge occurring.

This is typically in details that occur in building envelopes or where significant temperature difference is likely to occur between compartments, such as highly controlled atmospheric environments (plant or server rooms) or warm high humidity environments, such a breweries or swimming pools.

Example are

  • Façade system connections to the primary frame
  • Brise Solei and canopies
  • Roof plant room columns
  • Balustrading
  • External balconies
  • External Staircases
  • Man-safe systems
  • Sub-structure and basement structure elements
  • External to internal primary building element connections

The two principal types of thermal breaks are

Mechanical

comprising of combinations of structural components and compressive thermal insulating materials used to compensate for the poor thermal performance of the continuous steel elements

Solid State Structural Thermal Break Plates

used in conventional connections as a structural ‘spacer’ that also has a high thermal performance.

Energy Loss

Thermal Conductivity values

  • Steel – 50.0 W/m-k Stainless Steel 43.0 W/m-k Concrete 2.1 W/m-k
  • Farrat – TBL 0.292 W/m-k
  • Wood – 0.22 W/m-k
  • Farrat TBF – 0.20 W/m-k
  • Farrat TBK – 0.187 W/m-k
  • Soft wall insulation – 0.02 W/m-k or so

 

Heat Loss is quantified using three parameters

Plane elements
windows
U value (W/m2K) eg, floors, walls
Linear elements window/wall opening W value (W/mK) eg. Interface
Localised elements penetrating through wall x value (W/K) eg, structural element
Material Properties Farrat TBF* Farrat TBK Farrat TBL
Characteristic Compressive Strength, fck (N/mm, MPa) 355 312 89
Design value for compressive strength, fcd (N/mm”, MPa) 284 250 70
Compresion Modulus (N/mm, MPa) 5326 5178 2586
Density (kg/m3) 2160 1465 1137
Water Absorption (%) 0.40 0.14 0.48
Thermal Conductivity (W/m-k) 0.200 0.187 0.292
Colour (may vary) Grey Amber Black
Thicknesses available (mm) 5, 10, 15, 20 & 25 5, 10, 15, 20 & 25 5, 10, 15, 20 & 25
Maximum sheet size (mm) 1000 x 1200 2400 x 1200 2500 x 1250
Temperature resistance (Celsius) +550 short term (Max)
+300 long term (Max)
-120 (Min)
+250 short term (Max)
+210 long term (Max)
-180 (Min)
+170 short term (max)
+110 long term (max)
-40 (min)
Thickness tolerances (mm) +/- 0.5 (TBF 5)
+/-0.7 (TBF 10)
+/- 1.05 (TBF 15)
+/-1.4 (TBF 20)
+/- 1.75 (TBF 25)
0/+0.2 (TBK 5, 10 and 15)
0/+0.3 (TBK 20 and 25)
0/+0.25 (TBL 5)
+0.2/+1.5 (TBL 10)
+0.3/+2.5 (TBL 15, 20 and 25)

Design - Fire performance

Design - Fire testing

BRE Global Test Report

EN ISO 1716 Gross heat of combustion (calorific value) test on Farrat Structural Thermal Break, Farrat TBF.

Fire Behaviour Smoke Production Flaming Droplets
A2 s 1 , d 0

Reaction to fire classification: A2-s1, d0

Title CLASSIFICATION OF REACTION
TO FIRE PERFORMANCE
IN ACCORDANCE WITH
EN 13501-1:2018.
Notified Body No CLASSIFICATION OF REACTION
TO FIRE PERFORMANCE
IN ACCORDANCE WITH
EN 13501-1:2018.
Title 0833
Product Name Farrat TBF
Report No WF 424837
Prepared for Farrat Isolevel Ltd Balmoral Road Altrincham WA15 8HJ

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