safety for the user and may be connected on one or both sides of the stair unit 7 as shown in fig8 two platform units 1 can be combined to provide an extended working area and or to accomplish a change in direction for the platform system 10 for example one platform unit 1 may be mated to a side 55 of ledge 9 of another platform unit 1 in this instance an adapter 53 may be utilized to avoid any gapping between the platform units 1 and to provide a more secure fit adapter 53 is also preferably comprised of aluminum as further shown in fig9 and fig1 a single or a multiply joined platform unit 1 may be mounted atop an end unit 31 for support by utilizing connecting means such as screws washers and or bolts fastener holes as seen in fig1 are provided on the platform unit 1 to align with the fastener holes in the end unit 31 to allow for easy assembly by the users once the platform unit 1 is configured as desired a stair unit 7 may be attached at an end of the platform unit 1 such as at first end 3 or second end 5 as shown in fig1 stair unit 7 may be aligned with the fastener holes at an end of the platform unit 1 platform unit 1 comprises an angled portion 59 which is either integral with.