Ready-mixed concrete businesses batch concrete at a production plant to meet a required mix specification, then deliver it to building and construction sites while it is still workable. Customers typically include builders, groundworkers, contractors and householders undertaking projects such as foundations, floors, paths, driveways and structural work. Mixes vary in strength, consistency and suitability for different uses, and can be specified according to a project's design and site conditions. Typical services include helping customers identify an appropriate mix, arranging delivery in a concrete mixer truck and coordinating delivery times with site access and placement requirements. Some suppliers can provide concrete pumping or arrange specialist mixes, such as fibre-reinforced, coloured or fast-setting concrete. The customer or contractor is generally responsible for preparing the site, providing suitable access and placing and finishing the concrete promptly after delivery.