industrial hall, warehouse has a side door at a steep staircase with high resistance even under heavy load galvanized steel floor

blocks bridge building concrete construction covered deck design door edge edges entrance even expanded facade factory floor gabion galvanized garden grate gray grid hall has heavy high industrial infrastructure interlocked lawn load low mesh metal palisade paving perforated railing railings ramp resistance safety sheet side snow stainless staircase stairs stairway steel steep step steps terrace transparent wall warehouse welled winter yellow