Tuesday, March 15, 2011

Wallington public transport improvements - Update 8

Why start paving at the bottom of a hill?

A couple of people have asked me why the paving contractors started at Ross Parade - at the bottom of the hill - and worked uphill towards Boots and Sainsburys?

It is good practice to pave ‘uphill’ to ensure a tight, even bond between the paving slabs. When paving downhill the slabs can slip slightly and that can result in uneven transverse joints. By working uphill the slabs lean on the ones that have already been placed and bond back into them avoiding gaps.

So as each section of work is started contractors will begin at the lowest point and work uphill.

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