blue build building buildings contemporary copyspace door dundee education entrance fence modern path paving PPP railing railings roof school schooling scotland scottish sky wall walls white window windows appearance bricks building work damage damaged decay deconstruction demolished demolition leftover masonry overgrown pillars Remains rubbish rubble ruin ruins steps stones stonework textures urban wall waste weeds wrecked accommodation angles architecture box-like boxed brickwork building-construction building-site building-work concrete concreting construction development distinctive elements exterior external gray grey height high home house light linear lines modernistic perspectives plain second-storey second-story squared straight structured style suburban two-storey two-story units urban views work