Architecture / March 13, 2018 / Oriane.
In general it can be said that larger buildings with simple, rectangular, regular floor plans and elevations will be less expensive per sq.m. of floor area than smaller, complex shaped, curved or angular buildings. Economies of scale apportion fixed overheads to a larger extent of productive space. Simple setting out and buildable solutions encourage greater plant use and generate higher productivity and less waste. Complex layouts and details are slower to assemble and may involve a number of trades with a consequent greater risk of mistakes and defects. The degree of compartmentation and repetition will also affect the overall cost of the work. New building work is considerably cheaper than work of a repairing nature or work in existing buildings. Single storey structures tend to be more costly than buildings up to three storeys high, beyond which point they become progressively more expensive.
The quality of the building will express the clients ambitions for a prestigious development. This may range from a top quality building with minimal maintenance requirements where all matters relating to the design are controlled by the design team to developments such as retail or industrial process where the detailed design is not critical and can be undertaken by the contractor. It may be essential to use high quality materials in conservation projects or where planning conditions have been imposed. High standards of craftsmanship will also be required on alterations and extensions to listed or historic buildings.
Construction involves the production of large scale capital assets which affect not only the client, designers and constructors but also users, the public, and the environment at large. Common law regulates the rights and obligations of the contracting parties not only to each other but also their duties of care to society in general.
The clients attitude towards initial versus the whole life cost of the building can significantly influence the specification. Buildings incur costs over their life time; these include initial capital costs, operating costs, maintenance, disposal and finance costs. The key decision is whether to spend more money initially on better alternatives in order to save money in maintaining and operating the facility