Ousus Steel Factory Welded Steel Fixed Ladder is designed for safe docks and mezzanine access. This unit has a load rating safe for up to 300 lbs. (1.33 kN), applied at any point to produce the maximum load effect on the element being considered. The number and position of additional concentrated live load units shall be a minimum of 1 unit of 300 lb (1.33 kN) for every 10 ft (3,048 mm) of ladder height. The walks thru models have 1meter high handrails to increase safety.