In the UK, the success of a construction project is quite often dependent on the quality of the formwork system that was used. Manchester, a city where you will find a variety of old warehouses and new high, rises, formwork techniques have been continuously updated to satisfy both the Victorian architectural heritage and the requirements of present, day construction. This piece explores various facets of Manchester formwork such as the technical details, the legal framework and the new trends.

Essentially, formwork is a temporary shape or mould into which concrete is poured so that it hardens to the desired shape. The most commonly used formwork by the Manchester contractors can be broken into three main groups: traditional wooden panels, prefabricated steel or aluminium systems, and modular flexible plastic or polymer. Timber is still used extensively for minor renovation works as it can be easily cut on the spot and thus, it is very convenient for uneven surfaces. In contrast, steel and aluminium frames allow the construction of tall commercial buildings with maximum efficiency as they can be used to great effect in terms of strength and number of reuses while also minimizing the working hours. Also, newly developed polymer products are the perfect choice for a humid climate as they are light, rust, proof and thus very durable.Regulatory compliance covers all aspects of formwork design and erection. First of all, the Construction (Design and Management) Regulations 2015 (CDM 2015) of the UK require that only a competent person should be appointed to check the risks related to formwork, its stability under load, and safe access for workers. Secondly, various British Standards such as BS 6150 (temporary works) and BS 8110 (structural concrete) specify in detail the quality of materials, load calculations, and inspection regimes. For the most part, local authorities in Manchester are regularly tightening control on the implementation of these standards through spot checks on, site, especially in the case of high, rise projects where a failure of formwork may cause a risk to the public.

Environmental aspects form an essential part when choosing formwork. Steel reuse systems cut down on the carbon footprint by limiting the amount of single, use timber, whereas manufacturer nowadays are providing panels with a recycled, content that satisfy the requirements of BS 8008 (environmental performance). Besides, engineers are now equipped with digital modelling tools that help them come up with formwork arrangements that require least material usage and thus shorten the erection periods. There are a number of construction companies in Manchester which have adopted Building Information Modelling (BIM) to analyse formwork behaviour under wind loads, a scenario frequently faced due to the city's location on the Pennines.
Typical applications here in Manchester cover the refurbishment of the historic Albert Dock warehouses, where carefully crafted timber formwork is used to match the original stonework of the building, through to the construction of the 30storey Deansgate skyscraper which uses modular steel frames. A selection of formwork in the cases has been made to measure the heritage preservation, structural demand and schedule constraints.

Upcoming Manchester formwork is expected to be facilitated by the introduction of automation like the robotic panel placement and sensorbased stress monitoring which would result in a higher safety level generally.