ladder

altitude area ascent assemblage assembling beam bearing block blue building cage cement cloud coagulate concrete congeal construction derrick descending descent design elevation eminence fence fill filling freeze girder grate grating grey grille harden heaven height iron ironmongery ladder landing lattice lowering lump material metal metallic mounter mounting overcast part path pedestal pier potting prop pulley rail railing rise rusty shade shadow skeleton sky slope special staircase stairs structure support table thicken track upgrade wall way welding