Concrete Head Walls (Culverts)

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Waiting for 2 extra cu.m to finish base
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Back side of the shuttering

Shutting

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The face side of the head wall
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Cleaning under the steel
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Clean soil off the steel bars, prior to concreting
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Day one, clean out
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Excavate the first head wall
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Day 2 after the rain
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Lifting the cage into place, and putting 50mm spacer under the bars

New contract started 9th December 2015:

3 vehicle accesses on to a new housing estate.  Because vehicles have to cross a dyke there needs to have a culvert built, this is 2 head walls either side of the new access, built with concrete and reinforcement bars.

Day 1 after Highway approval, (as this is part of a S278) set up site as the norm

Day 2 As we are in a dyke, we have a water problem, best solution is when excavating, use the material to dam up the dyke. Pump the rest out.

Day 3 Road Entrance 1, Base of the first Head wall 6m x 3m (it is 2.4m below road level) knock some pegs in the soil base and concrete with lean mix, concrete about 50mm thick. This will be for the steel fixers to work on.

Day 4 Put together the steel bars, using plan and bar schedule. Fairly easy to read, example H16/02/39/3760 this is 16mm bar / 02 on plan / 39 bar / 3.760 lengths. Read with plan.

End of week 1

Day 5 After fixing steel, clean off the muck on concrete base in the dyke – lift into place – sit the steel on spacer 50 – 60mm

Day 6 complete steel fixing & get checked off by site manager & Highways

Day 7 Pour concrete

Day 8, 9, & 10 put together the steel for the other side & excavate base

Day 11 Monday 21st December 2015 Fix Concrete Pipe 600mm diamter inside steel bars & Shutter

Day 12 Concrete Headwall

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