| 摘要 |
<p>One unit has four corner risers (1) and four channel-section horizontal sides (4), the span being broken by intermediate channel-section traverses (7). The top panels (3) are notched in the corners so that they occupy only one quarter of the area of the corner support plates, allowing four adjacent units to be assembled on one corner risers and each riser has a foot plate (16). The frame has sloping struts (9) and horizontal cross bracing (17). Connecting collars (11) and the junction profile (8) forms the joints, the units being fixed together by bolting.</p> |
