busy in office computer program computer specialist computers engineer in office hard work keyboard laptops office work structural analysis white collar man work on computer angles architecture black-and-white building buildings cambodia concrete construction construction-work dangers daylight distance distant frame framework galvanised galvanized gray grey greyscale metal metalic monochrome multi-storey multi-story people ribbed ribbing risks risky roof roof-trusses roofing safety sheeting sheets shelter sheltered steel structural-work structure trusses upper-storey upper-story workmen abandon abandoned ancient architectural backdrop background black blue chimney chimneys cornwall derelict disused drama dramatic edifice fishmonk industrial industry landmark mine mines mining old ruin ruined ruins silhouette silhouetted silhouettes skies sky stack stacks structural structures tin unused wall wheelhouse work works appearance christian church church-building colored colors coloured colours community cross design distinctive exterior faith frontage functional gathering-place glass height high light lines meeting-place metal-work modern perspective pitch plain religious Sacred solid style suburb suburban windows worship