9 The number of storeys developer Heron has had to slice off its planned central London tower over concerns about views of St Paul’s Cathedral raised by architecture watchdog CABE, English Heritage and local residents.

36 The number of days it takes to erect a prefabricated commuter rail station. Network Rail is planning to use them as it’s quicker and cheaper than refurbishing existing ones.

75 The percentage of the construction industry in favour of legally binding site waste management plans, which would cut 109m tonnes of waste a year in England and Wales, according to a government consultation. See page 59.

80 -100 The number of hours a week three Polish workers claim they were each working for Gibson Contracts in Northern Ireland. UCATT is helping the men bring the case of alleged discrimination to an employment tribunal which could become a test case for migrant employees.

47,000 The amount, in tonnes, of steel used so far on the facade of the 2008 Beijing Olympics media centre designed by architect RMJM. Workers have been on site 16 hours a day, seven days a week since April 2005.

620m The amount, in pounds, Carillion is expected to offer for Alfred McAlpine after two bids, from Morgan Sindall and Balfour Beatty, were rejected. The takeover would make Carillion the UK’s second largest contractor after Balfour Beatty.

16bn The amount of funding in pounds in place for London’s Crossrail.

A skills academy will next year to train workers to build the rail link between 2010 and 2017.