construction of a steep staircase by the stone wall car park with high durability even under heavy load galvanized steel floor gra

building car concrete construction covered deck deformation design detail durability even fabric fence floor folded footbridge gabion galvanized garden gra grate gray grid heavy high hill him horizontal industrial infrastructure interlocked landscape load low mesh metal mountain outdoor palisade park parking paving perforated platform railing railings ramp relief retaining shading square staircase stairway steel steep steps stone sunny tower transparent view wall walled welled wire