HK5 - Brickwork Support

  • Approved and type-tested anchoring for brickwork support systems
  • Complete product range for brickwork construction
  • Available March 2017
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HALFEN Brickwork Support Systems
Technical Product Information
FM 18-E
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New brickwork support bracket with greatly improved thermal heat transfer characteristics

HALFEN HK5 Anchors have higher load capacities and require less steel than its predecessor.

Brickwork façades are aesthetically appealing and cost-effective; this type of façade is durable and offers long-term protection against noise, heat and cold, and effect of weather: This is the reason that this type of façade is still in demand for new build and regeneration projects. HALFEN Bracket supports ensure permanent and safe brick façades; they are used to support the weight of brickwork renders and transfer the load into the main support structure.

Lower heat transfer than ever before

Brickwork supports penetrate the insulation and cause localised thermal bridging. The improved HK5 support bracket can now significantly reduce the effect of thermal bridging. Its optimised shape means less steel is required, especially, where it is critical: When HK5 penetrates the insulation of the building. The HK5 Bracket support takes full advantage of Lean duplex, a class III corrosion resistance stainless steel. The new design and selective choice of materials means HK5 achieves expert report certified top chi values. These values are made available in a user-friendly table for easy use. Further chi values for custom wall design or special insulation materials are available on request. This helps to reduce insulation thickness and therefore to increase the usable floor space.

Increased load capacities – lower costs

Increased load classes of 4.0 kN, 8.0 kN and 12.0 kN instead of 3.5 kN, 7.0 kN and 10.5 kN (HK4) also has a positive effect on the number of brackets required. Fewer brackets means reduced installation time, lower transportation costs, less on site storage space is necessary and reduces the number of thermal bridges. The HK5 Bracket support therefore makes an important contribution to energy efficiency and cost savings.

Easy on-site installation

The reduced steel surfaces of the HK5 Bracket support means it weighs less than its predecessor. This facilitates on-site handling. Apart from that, the HK5 retains all the proven advantages of the HALFEN bracket supports. The freely adjustable height using a slotted bracket and the horizontal adjustability are ideally suited to compensate structural tolerances or installation inaccuracies. The system also ensures optimum load distribution into the main structure. The slender design and angle in the bracket ensure maximum stability. The load capacities have been type-test certified and the bracket head is building authority approved.

The new, certified HK5 Bracket support system with its significant improvements in shape, thermal loss coefficients and load capacities, permit builders to build more economical and to comply with energy efficiency standards more easily.

HK5-U

The HK5-U brickwork support system is an individual support bracket with a continuous web plate and support plate.
Attaching the adjustable HK5-U brickwork support brackets on the cast-in HTA-CE Halfen Channels or approved HALFEN Dowels guarantees an installation-friendly, economic and secure construction. The listed load capacities refer to anchoring in concrete ≥ C20/25.
Individual support bracket
  • HK5-UV
  • HK5-UT
  • HK5-W
  • HK5-WV
  • HK5-U with suspension loop
  • HK5-S
  • HK5-SV
Angle support bracket
  • HK4-G
  • HK5-F
  • HK5-FV
  • HK5-FR
  • HK5-FRL
  • HK5-P
  • HK5-PV
Bracing of brick cladding at low heights, for example above window openings, allow greater distances between the support brackets.

Materials:

L4: steel of the corrosion resistance class III according to Z-30.3-6, or EN 1993-1-4: 2006, Table A.1, Line 3, (Group 1.4062, 1.4162, 1.4362…).
A4: steel of the corrosion resistance class III according to Z-30.3-6, or EN 1993-1-4: 2006, Table A.1, Line 3, (Group 1.4404, 1.4571…).
A2: steel of the corrosion resistance class II according to Z-30.3-6, or EN 1993-1-4: 2006, Table A.1, Line 2, (Group 1.4301, 1.4311, 1.4307…).
HCR: steel of the corrosion resistance class IV according to Z-30.3-6, or EN 1993-1-4: 2006, Table A.1, Line 4, (Group 1.4439, 1.4462…).

KW and KWL Bolt-on angles

The KWL and KW angle brackets provide a simple alternative for supporting continuous wall areas. The KW and KWL angle brackets are used when the support structure is intended to remain visible from below but the air gap and the thermal insulation to be concealed.

KM Grout-in brackets

The support brackets are suitable for supporting brick cladding that is constructed on the face of existing buildings. This involves a first step of cutting or drilling sufficiently deep recesses into the existing brickwork, using cutting equipment or a core drill. Then
the support brackets have to be set in mortar in these recesses. Only cement mortar of group III should be used for this purpose. The intermediate supporting angles are put in place loosely. The height of the brick cladding supported by the brackets cannot exceed 3.00 m.
Load level of the KM grout-in brackets: perm. FV= 3.0 kN (FRd = 4.0 kN). It may be necessary to perform calculation checks regarding the further load transfer from the brickwork into other parts of the building. Minimum compressive strength of the existing brickwork must be ≥ 0.5 MN/m2 with a wall thickness of at least ≥ 24 cm. Note: If the compressive strength of the brickwork is higher, it is also possible to support greater weights of brickwork, i.e. panels up to approx. 6 m high.

HAV Parapet support brackets

Flat roof slabs constructed in reinforced concrete are subject to particular loads from changes in temperature. The resulting longitudinal changes of the roof structure are accommodated by sliding bearings between slab and supporting structure. When brick cladding is attached to the parapet, these longitudinal movements would lead to cracks in the brick cladding. For this reason it is necessary to separate the cladding from the parapet. The HAV parapet support bracket achieves this purpose. The brick cladding is fixed to the parapet support bracket using wall tie anchors. A suitable fixing for the parapet support brackets is in HALFEN channels that have been included in the casting of the ring beam. This means that any movement of the roof slab does not affect the brick cladding.

Quality features:

  • type approved anchoring
  • CE-marked
  • very good adjustment options
  • complete product range for brickwork construction