There is a really wide variety of modern design methods where construction is concerned. Processes ad techniques are being developed all the time and currently they have altered the way the construction companies work and behave in a far reaching manner. This is managing to bring far more developments in to this sector. The modern methods are generally referred to MMC that incorporate proper planning and design so each job or project will reduce down the costs and time for construcion whilst sustainability is maintained. Different types of MMC include precast flat panel systems which involves making floor and wall units completely away off site – in a separate purpose uilt factory setting that has all the necessary facilities in place. Once those panels are constructed according to the design specification, they are brought to the site ready or installation. This of course is perfectly suited to rapid repetitive construction activities. The manufactured panels are complete with windows and doors.