Connecting systems for advanced residential buildings

On the following pages you will find our connecting systems for advanced residential building.

The WALCO® V wall connecting system allows fast and precise assembly through a simple „dove tail“ mechanism. Even advanced, fully pre-manufactured walls (including windows and doors) can simply be snapped together on site without any screwing or nailing. This applies to all advanced multi level closed wall prefab and modular structures, timber frame structures, as well as fastening systems for facades.

KNAPP® connecting systems provides a very high degree of prefabrication, is compliant to the (ETA) European certification and has the CE-marking. Regular external inspection guarantees maximum security for contractors, architects, manufacturers, engineers and owners. All KNAPP® connectors can simply be snapped in place. The fasteners are recessed and not visible when assembled. In most cases, disassembly is possible.

KNAPP® connectors not only guarantee to meet the highest standards in the manufacturing and assembling process, but also are esthetically pleasing.

WALCO® V | The connector for prefab-walls up to 14 kN

The WALCO® V wall connector set consists of a “dove tail” shaped hot-dip galvanized bracket and a specially shaped counterpart screw. An optional lock can be installed to latch the connection against the slide-in direction. Prefabricated walls can be connected to each other within just one minute. Assembly is made simple through the spacious V-shaped bracket and only needs a 35 mm (1 ½ inch) distance to engage the screw with the bracket. WALCO®V is available in two sizes (60 and 80), and each size in four different kinds (KS, VK, EH, GH*).

  • Universal – connections can be made from timber to timber, to steel and to concrete.
  • For timber widths from 80 mm upwards
  • Easy – no recess of bracket needed if the hight of the planking is 13/15 mm (the counter part screw can be recessed on the other side).
  • Effective – fast and accurate assembly on site – fully prefabricated walls are assembled without any screwing or nailing.
  • Stable from the first wall corner on
  • Saves labor – quick and easy assembly through spacious V-shaped bracket.
  • Unique – screws are screwed directly in the component with or without interlayer
  • Flexible – assembly to the last wall and even interior walls.
  • Adjustable and esthetically pleasing – connectors are recessed and therfore not visible when assembled. Screws can be readjusted in perpendicular direction to compensate building tolerances e.g. for seals and gaskets.
  • ETA certified (even for hardwood).

*KS = Hex-head screw, VK= collar bolt holding screw, EH=Adjustable retaining screw, GH=Retaining spring holding screw

Stalls with WALCO®

Project: Demountable stalls for the District Museum Association Schloss Landeck (AT)
Method of construction: Timber frame construction
Knapp-Connector: WALCO® V
Timber construction: Students of the HTL Imst with Ing. Dipl.-Päd. Gerhard Peer HTL Imst / Building Technology Department, www.htl-imst.at
Architect: HTL Imst / Building Technology Department

Housebuilding – Single-family houses and urban villas (AT)

Project: Prefabricated houses (AT)
Method of construction: Frame construction
Knapp-Connector: WALCO® V
Timber construction: Genböck Haus Genböck & Möseneder GmbH, www.genboeck.at
Architect: Genböck Haus Genböck & Möseneder GmbH
Energy usage: For example passive houses, energy-plus-houses

Housebuilding – Addition of storeys to a multi-family house (DE)

Project: Addition of storeys to a multi-family house (DE)
Knapp-Connector: WALCO® V
Builder: Braintec GmbH, 83132 Pittenhart, www.brain-tec.net
Architect: ARCHITEKTURBÜRO ANSELM KANNO, www.architekt-kanno.de
Timber constructor: Zimmerei Holzbau – Schröder, www.holzbau-schroeder.com
Structural engineering: Andreas Reinicke, 21354 Bleckede
Method of construction: Timber frame construction
Construction time: 8 months
Press article: mikado 5/2014

Housebuilding – House^3 (US-MN)

Project: Prefabricated house – House^3 (US-MN)
Knapp-Connector: WALCO® V
Builder / Project developer / Architect:  University of Minnesota Duluth, www.d.umn.edu
Details: The most unique characteristic of House³ is its ability to be transported, assembled, disassembled, and redeployed. House³ uses proprietary wall connectors to ensure that prefabricated wood framewalls can be slid into place directly on site with minimal effort. Most importantly, the connectors allow for a clean disassembly and repacking of the module for relocation.
Brochure: Containerhäuser USA

Housebuilding – New constructed housing complex in Sistrans (AT)

Project: Prefabricated house – Housing complex in Sistrans (AT)
Knapp-Connector: WALCO® V
Architect:  Teamk2 (Architects), www.teamk2.com
Timber construction: Schafferer Holzbau, www.schafferer.at
Press article: mikado 3/2011

Housebuilding - Wasserferienwelt „Im Jaich“ / Rügen (DE)

Project: Prefabricated houses – Wasserferienwelt „Im Jaich“ / Rügen (DE), www.im-jaich.de
Knapp-Connector: WALCO® V
Architect:  Drebing Ehmke Architekten, www.drebingehmke.de
Timber construction: HOKO Fertighaus GmbH, www.hoko-haus.de
Structural engineering: IBAST Ingenieurbüro für Baustatik, www.ibast.de
Construction time: June 2009 to October 2010
Method of construction: Wooden frame construction
Press article: mikado 1-2/2011
Brochure: Referenzprojekt Bootshäuser Rügen

Housebuilding – Wooden four-storey building in Bad Aibling (DE)

Project: Prefabricated four-storey building in Bad Aibling (DE)
Knapp-Connector: WALCO® V
Builder: B&O-Gruppe Bad Aibling, www.bo-wonungswirtschaft.de
Planning:  SCHANKULA Architekten/Diplomingenieure, www.schankula.com
Timber construction: Huber & Sohn GmbH & Co. KG, www.huber-sohn.de
Press article: mikado 10/2010

Housebuilding – Single-family house / Rigi (CH)

Project: Prefabricated single-family house / Rigi (CH)
Method of construction: Wooden post-and-plank construction
Knapp-Connector: WALCO® V
Timber construction: Die Holzwerkstatt Matthias Ebi, Nöggenschwiel, www.ebi-holzwerkstatt.de
Architect + Planning:  Schweizer Naturhaus CH-Koblenz, www.natur-haus.ch
Structural engineering: Ingenieurbüro Rotkamm Albbruck, www.rotkamm.de
Energy usage: Low energy according to Swiss Standard
Construction time: 5 months
Press article: mikado 10/2011
Brochure: Referenzprojekt Holzfertigteilhaus mit Helikoptermontage Rigi

“Mc Cube” – Modular house to put together

Project: Modular house to put together / Winklarn (AT)
Knapp-Connector: WALCO® V
Builder: Martina Kies
Architect: Mc Cube Homes GesmbH iG, www.mccube.at
Timber constructor: Fahrenberger GmbH, www.zimmerei-f.at
Finalized: Autumn 2014
Press article: momag 326 | November 2014

Housebuilding – international competition “Solar Decathlon Europe 2010”

Project: Prefabricated houses for the Solar Decathlon Europe 2010 – 2nd place in the overall ranking (ESP)
Knapp-Connector: WALCO® V, RICON®, QUATRO 65
Builder/Project developer/Architect: TEAM IKAROS BAVARIA | FH Rosenheim, www.solar-decathlon.fh-rosenheim.de
Details: It remained exciting until the end: on the evening of the last competition day of the first international university competition “Solar Decathlon Europe 2010” on European soil, the 17 participant teams came together for the award ceremony. Richard King, the inventor of the “Solar Decathlon” in the US, welcomed the Decathletes. Then the winners were determined: Rosenheim took the second place – for the outstanding performance of the student “Team IKAROS Bavaria” of the University of Applied Sciences – University of Applied Sciences Rosenheim.
Brochure: Solar Decathlon Europe 2010

Housebuilding – Nine housing units in a backyard (GBR)

Project: Prefabricated houses – Nine housing units in a backyard, London-Harlesden (GBR)
Knapp-Connector: WALCO® V, WALCO® 40
Builder / Project developer / Architect: SUSD Ltd., www.susd.co.uk
Structural engineering: Dr. Dubslaff & Rosenkranz D-59939 Olsberg, www.rdr-energie.de
Timber construction: Holzbau Becker & Sohn GmbH, Kolpingstraße 4, 59964 Medebach, www.becker360.de/referenzen/wohnhaeuser
Construction time: December 2008 – December 2010
Method of construction: Wooden frame and plank pile design
Gross building volume: 2342 m³ / 897 m²
Press article: mikado 12/2010
Brochure: Referenzprojekt Urbaner Holzbau London

WALCO® 40 | The wall connector for timber frame constructions up to 10 kN

The WALCO® 40 set consists of two identical brackets made out of blue-galvanized steel. Commonly used gaskets can be installed on the prefabricated wall panels. When sliding the wall panels together, the brackets hook into each other in a dovetail-like manner and tighten up the connection. This allows the wall panels to be pre-manufactured to a large degree in a superior and advanced quality and then connected on site with no screwing or nailing needed.

  • Efficient wall connectors for timber frame and wood panel construction.F
  • For timber widths from 60 mm and upwards.
  • Large degree of prefabrication – no screwing or nailing on-site.
  • Simple and easy – the wall panels are snapped together.
  • Stable from the first wall corner on
  • For timber structures according to DIN 1052 and Eurocode 5 (EN 1995-1-1).
  • ETA certified (even for hardwood).

Housebuilding – Nine housing units in a backyard (GBR)

Project: Prefabricated houses – Nine housing units in a backyard, London-Harlesden (GBR)
Knapp-Connector: WALCO® V, WALCO® 40
Builder / Project developer / Architect: SUSD Ltd., www.susd.co.uk
Structural engineering: Dr. Dubslaff & Rosenkranz D-59939 Olsberg, www.rdr-energie.de
Timber construction: Holzbau Becker & Sohn GmbH, Kolpingstraße 4, 59964 Medebach, www.becker360.de/referenzen/wohnhaeuser
Construction time: December 2008 – December 2010
Method of construction: Wooden frame and plank pile design
Gross building volume: 2342 m³ / 897 m²
Press article: mikado 12/2010
Brochure: Referenzprojekt Urbaner Holzbau London

QUATRO 65 | Hidden deck, panel and board connector incl. 500 CS-screws

The QUATRO 65 is a connector for decking boards and wall panels. It is mounted easily and is non-visible from the first board up to the last. As a result, the connector offers a perfect appearance and high level of security.

QUATRO 65 is easy to handle for professionals, as well as for DIY home improvements. It can be pre-mounted and the boards or panels are quickly fastened on-site using the connector system.

The greatest benefit of this connector is that it allows the natural movement of the wood. Rainwater is diverted, and as a result the durability of the coating and construction is extended.

The QUATRO 65 is fastened on the bottom side of the boards or panels. The elements are then screwed onto the joists. In case of very hard wood, the screw holes should be pre-drilled.

The mounting template enables an even and precise adjustment of the width of the joint. The proper spacing can also be adjusted using the measured grooves.

  • Concealed from the first board to the last
  • Constructive wood protection against moisture
  • Allows expansion and contraction of wood boards
  • Optimal rear ventilation through spacing
  • Can be used for timber facades and formwork, for which rear ventilation has been implemented
  • Easy installation with mounting templates
  • UV and weather-resistant fiberglass reinforced plastic.

Tips:

  • Even the best connecting system cannot offset poor quality of some timber. Please ensure that the timber is dry; particularly, avoid timber from the core and spiral-grained boards.
  • Recommended length of the boards: maximum 3 m (9.8 ft.).
  • Recommended for spacing no smaller than 7 mm between the boards and the joists
  • You may pre-drill, particularly with hardwoods, such as oak.
  • Follow the installation instructions of your timber supplier.

Housebuilding – international competition “Solar Decathlon Europe 2010”

Project: Prefabricated houses for the Solar Decathlon Europe 2010 – 2nd place in the overall ranking (ESP)
Knapp-Connector: WALCO® V, RICON®, QUATRO 65
Builder/Project developer/Architect: TEAM IKAROS BAVARIA | FH Rosenheim, www.solar-decathlon.fh-rosenheim.de
Details: It remained exciting until the end: on the evening of the last competition day of the first international university competition “Solar Decathlon Europe 2010” on European soil, the 17 participant teams came together for the award ceremony. Richard King, the inventor of the “Solar Decathlon” in the US, welcomed the Decathletes. Then the winners were determined: Rosenheim took the second place – for the outstanding performance of the student “Team IKAROS Bavaria” of the University of Applied Sciences – University of Applied Sciences Rosenheim.
Brochure: Solar Decathlon Europe 2010

Z-DECK | Deck fastening, stainless steel

The Z-DECK is a concealed, very strong stainless steel deck connector. Mounting is made easy through screwing horizontally in the board and vertically in the construction below. Through the special shape of the Z-DECK, the connector allows the wood to shrink and swell, and fixes the boards stronger than a normal screw from above.

Tests have shown a great performance of the Z-DECK with hardwoods, as well as tropical woods. The Z-DECK connector is concealed, but every board can be removed individually.

The Z-Deck connector has a special hook that hooks into a groove on the narrow side of the board. As the connector is hooked and screwed to the narrow side of the board, the connector with the board will be screwed to the joints below. At the same time, the screw allows shrinking and swelling between 4-6 mm. The connector is hidden but each board can be removed individually.

  • Concealed from the first board to the last
  • Very robust and can be used even for beach and boat docks
  • Boards can be quickly and individually replaced
  • Optimal wood protection through self-cleaning joint design
  • More solid than visible screw connections from the top
  • Increased security against twisting of the boards
  • Connectors and screws are made of quality stainless steel
  • Exceeds the requirements of Holzforschung Austria

Tips:

  • Even the best connecting system cannot offset poor quality of some timber.
  • Please ensure that the timber is dry; particularly, avoid timber from the core and spiral-grained boards.
  • Recommended length of deck board: max. 3 meters (9.8 ft.).
  • Recommended spacing: starting at 7mm
  • Pre-drill, particularly with hardwoods, such as oak.
  • Follow the installation instructions of your timber supplier.

Eb-Ty® LC | Deck fastening, plastic

Eb-Ty® is used for deck boards and panels, indoor and outdoor, as well as wood facades and formwork where ventilation is necessary.

The “fish-belly” shaped one-piece connector is secured with a CS-stainless steel screw. The integrated spacer provides wide joints for uniform 6.5mm and can compensate up to 4mm swelling and shrinkage.

  • Concealed mounting
  • Quality stainless steel CS-screws
  • Efficient, quick and easy mounting
  • Allows shrinking and swelling
  • For 6.5mm of spacing
  • UV and weather-resistant plastic

Tips:

  • Even the best connecting system cannot offset poor quality of some timber.
  • Please ensure that the timber is dry; particularly, avoid timber from the core and spiral-grained boards.
  • Recommended length of deck board: max. 3 meters (9.8 ft.).
  • Pre-drill, particularly with hardwoods, such as oak.
  • Follow the installation instructions of your timber supplier.

ACRO and BASIS-System | Stable timber connector für pillars and posts, column mounting