| 摘要 |
<p>A rail support assembly comprises a beam (12) with a channel (11). This receives a rail (10) clad with a sheath (15) and the channel outside the sheath is filled with a liner or infill. The upper edge of the sheath may be sloped either towards or away from the rail, and a cover such as (18) or (15) place over the rail and resting on the top edges of the sheath during moulding.</p> |
