ABSTRACT
Although reinforced concrete floors of all kinds are used in large buildings such as blocks of flats or office blocks, timber floors are still widely used in domestic dwelling houses, especially above ground-floor level. Such floors were predominantly formed with traditional timber joists, but patented, engineered timber joists – covering wider spans – are also being used nowadays. In the UK, floors are generally referred to according to their position in relation to the ground. These range upwards from ground-floor level, first floor, second floor and so on; they may also be classified technically as single or double floors, according to the cross-formation of the structural members.
