in Turkey: the falsework was moved to another opening as soon as the lower arch rib had been completed Falsework has been employed in bridge and viaduct construction since ancient times. The Romans were renowned for its use, as at the
Limyra Bridge in Turkey. Until the turn of the 20th century almost all falsework was constructed from
timber. To compensate for timber shortages in different regions and to rationalize labor and material usage, new systems were developed. The major developments include the design of connection devices (coupler), transitions to other spanning beams such as steel pipes or profiles or reusable timber beams, and adjustable steel props. In 1935 W.A. de Vigier designed an adjustable steel prop which revolutionized many aspects of the construction industry including to support slab formwork, wall formwork, trench sheeting and falsework. Materials from which falsework systems are manufactured have also diversified from traditional steel and timber to aluminium components. ,
Spokane, Washington, 1911 In the UK, BS 5975 gives recommendations for the design and use of falsework on construction sites. It was first introduced by the
British Standards Institute in March 1982 and the third version was published in 2008 with Amendment 1 in 2011. The new revisions bring the code up to date with methodology developed in the new CDM 2007 regulations and also the requirements of the new European codes EN 12811-1:2003 Temporary works equipment - Part 1:
scaffolds, and EN 12812:2004, falsework - performance requirements and general design. ==In modern roadway construction==