Bridge 2, Childswickham Road
The parapet steelwork has
now been erected, and the haunching to the ballast retaining walls has
been completed (just visible on the photos). You can see how surface water from the deck is guided off and away from the bridge. Not visible are the new road height
warning signs which have also been fitted, and the bird netting at the tops of
the abutments.
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| Love the new balustrades! |
All things being equal the
scaffolding removal may start tomorrow, following completion of which the
brick pointing to the abutments can be completed. The end of deck drainage and
some fence works also have to be done, together with the fitting of the timber
ballast boards and finally the deck waterproofing. Then lastly, the laying of
ballast as waterproofing protection. Somewhere amongst that lot the road will
be re-opened, it's difficult to predict exactly which day yet.
Bridge 4, Peasebrook farm
The concrete slab was
finished last Thursday and the shuttering has been stripped and the site tidied
up. Our three photos show shots from various angles.
With the parapet railings it look rather like a giant double bed!!
We'll take another look later this week to see what happens next.
The lattice steel parapets on the Childswickham Road bridge seem to be longer than they need to be - they go behind the brickwork for a fair distance.
ReplyDeleteLooking at photos of other bridges, it seems that sometimes there's a bit of an overlap (although generally not so much), or the steelwork just goes up to the brickwork, but no further - as here, on Bridge 1 at Broadway:
http://4.bp.blogspot.com/-wowMCs5ol3c/VD7BEUSuVII/AAAAAAAAB3w/xrOQDAJrp-g/s1600/14-10-08%2B009.jpg
Is there a technical reason for the overlap? Is the steelwork made in standard sizes, and then installed behind the brickwork as necessary to fit the actual width of the bridges?
Hi Michael, we have tried to replicate the parapets to match those originally provided rather than adapt them in any way. The added complication is that many of our bridges, especially those nearest to Broadway, have abutments that lean towards each other. The worst two each lean about 8" (200mm), so the span at deck level is 16" (400mm) shorter than it should be. The steelwork, however is as drawn. The result is that the end bearings sit further back from the abutment face than they should, and we have had to add extra concrete to provide the necessary support.
ReplyDeleteAs the position of the pilaster brickwork is governed by the abutment brickwork location I imagine that the overlap is therefore 8" longer at each end than was intended!