Project Report: Rotunda Birmingham

The Rotunda is the final part of the re-development of the land mark Bullring in central Birmingham. The iconic, 21 storey, listed, 1960"s office building was transformed into luxury apartments without disrupting Birmingham"s busy main shopping district by using pre-fabricated cladding elements installed from a roof mounted crane.

(firmenpresse) - The Rotunda is the final part of the re-development of the land mark Bullring in central Birmingham. The iconic, 21 storey, listed, 1960"s office building was transformed into luxury apartments without disrupting Birmingham"s busy main shopping district by using pre-fabricated cladding elements installed from a roof mounted crane.

Unitised curtain wall facade.
The entire re-cladding operation was achieved without scaffolding by using a pre-fabricated and pre-glazed unitised form of construction. The bespoke curtain wall elements 2.85m wide by 3.2m high were manufactured in our headquarters in Arnstorf. The elements were then installed using a roof mounted crane and lifting chimney.

Facade types and scope
Design, manufacture and installation of bespoke cladding systems including:
- 5,700 m2 fully unitised storey height elements with concealed sliding doors
- 500 m2 ventilated textured glass rainscreen to concrete walls
- 200 m2 plantroom louvers
- External structural glass balustrades
- Internal glass balustrades
- Copings, soffits, cills
- Doors

Facade technical details. Facade performance - tested to CWCT sequence B
- Air permeability: 600 Pa
- Watertightness static and dynamic test: 600 Pa
- Wind resistance service: 1850 Pa / -2100 Pa
- Wind resistance safety: 2775 Pa / -3150 Pa
- Thermal insulation curtain wall: Ucw 1.7 W/m2K
- Thermal insulation glazing: Ug 1.4 W/m2K
- Solar shading / glazing g value: 0.36
- Light transmission: 65%

Unitised Main Facade to Apartments
The main envelope comprises 36 faceted elements per floor to suit the circular floor plate of the tower. Each
element contains a fixed pane and a "pop-in" type sliding door. The doors are specially designed to travel across a 5 degree facet angle, and can provide "crack ventilation" in their tilt position, or open fully to provide a stunning vista across the city.

The doors are structural silicon glazed and the fixed panes are capped and retained by gaskets. This gives uniform external appearance to the fixed and opening panes. The system achieves air permeability and watertightness of 600Pa according to CWCT sequence B.

Internal glazed balustrades provide protection when the doors are open. Double glazed units to the vision glazing have a combined high performance solar control and low-e coating to give excellent thermal insulation yet prevent solar overheating. Single glazed spandrels of textured and fritted glass add character and sparkle at the slab zone. The spandrels also conceal the ventilation inlets and outlets for bathrooms and kitchens positioned behind the glass.

Special separators installed between the curtain wall mullions and the internal walls provide exceptional levels of acoustic flanking insulation and fire separation between apartments. Fritted textured glass is also used as a rain-screen to the concrete walls at the interface to the podium building. Aluminium profiles have a natural anodised finish.

Developer: Urban Splash
Main Contractor: Urban Splash
Architects: Glenn Howells Architects
Completion date: 2008
Images: © Nic Grant

www.Lindner-Group.com

Bildrechte: © Nic Grant

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Bereitgestellt von Benutzer: Adenion
Datum: 19.08.2013 - 11:00 Uhr
Sprache: Deutsch
News-ID 288767
Anzahl Zeichen: 3807

contact information:
Contact person: Wolfram Aichner
Town:

Arnstorf

Phone: 49 (0)8723/20-32 12

Kategorie:

Micro-electronics & Nanotechnology

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