| 摘要 |
<p>Known staircases for providing access to buildings, particularly portable buildings where the height of the access door sill of the building above the ground level varies according to the particular location and can only normally be determined once the building has been installed and levelled, suffer from the disadvantage that they have to be custom-made and can only be produced once the building has been installed. The staircase (10) according to this invention consists of two spaced-apart support stringer assemblies (20) between which treads of steps are supported wherein each support stringer assembly (20) is constructed from sections (24) which are bolted together on site to form a support stringer assembly (20) of desired length and thus a staircase (10) of desired height to suite the particular location of the building.</p> |
