| 摘要 |
An elongated structure is provided including a pair of opposite end transverse end members and a plurality of laterally spaced apart and longitudinally extending bar members extending between and supported atop corresponding longitudinally spaced portions of the transverse end members. Mid-length portions of the transverse end members include upwardly and outwardly inclined shank portions over which the lower ends of upwardly and outwardly inclined bridging members are telescopingly engaged and each bridging member includes a pair of upwardly convergent bracing members whose upper ends are secured to the bridging members and whose lower ends are anchored relative to the opposite ends of the corresponding transverse member.
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