Twinwall construction is a walling system that combines the speed of erection and quality of precast concrete with the structural integrity of in-situ concrete to provide a hybrid solution. The prefabricated panels comprise two slabs separated and connected by cast-in lattice girders. The units are placed, temporarily propped, then joined by reinforcing and concreting the cavity on site. Twinwall is usually employed in association with precast flooring systems.
The panels are manufactured to exacting tolerances, have a high quality finish, and can incorporate cast-in cable ducts, electrical boxes and service ports. Installation rates are of up to 100m2 per hour. Twinwall has excellent inherent fire resistance and acoustic performance.
Further information on twinwall can be found in the publication Design of hybrid concrete buildings.
This publication assists engineers in understanding the common challenges of building tall.
An all-you-need-to-know guide on the specification of sustainable concrete.
Guidance on how concrete can be used to achieve credits under the latest version of BREEAM NC:2014.
This book summarises the reference material that will be used in the design of reinforced concrete buildings to Eurocode 2.
This document provides information on the material and resource efficiency of concrete and masonry.
This guide sets out how concrete's attributes can be used to minimise CO2 emissions.
This eighth annual report report presents the concrete industry’s sustainability performance in 2014.
This publication explores the key themes of whole-life, including future flexibility, resilience and ease of maintenance.
This guide focuses on the use of concrete at Coin Street Neighbourhood Centre and its part in creating a low energy building.
This publication summarises the material used in the design of reinforced and prestressed concrete bridges using Eurocode 2