Page 10 - Scaffolding Magazine 2022

n Awards nasc.org.uk

Constant interaction with the
designer and client was required
to overcome issues with the
struture, the environment and
logistical problems with
the isolated location
of the viaduct

used in this scaffolding package
including the purchase 2265 metres
or 1.40 miles of 1.28m deep beams.

Challenges
There were many challenges to
address on this project:
l The whole scheme had to be
completed in 12 months during
the pandemic . Breaks had to be
staggered and teams were separated
both travelling to site, working
on site and staying in overnight
accommodation with very few issues.
l The use of the gallows brackets
including additional brackets saved
the client time and expense in
costly groundworks which would
have to have been remediated on
completion of the project.
Project of the Year Poor ground conditions prevailed 800 tons of Considerable trials were
(Turnover up to £5m) to some of the arches so crane equipment was undertaken to decide the best
used by Layher for
Sponsor: Layher Ltd mats were used up to one metre Saltburn Viaduct method of fixing to the 150-year
Winner: Crossway square to spread the loads from the old brickwork. Layher re-designed
Scaffolding (Elland) Ltd scaffolding standards as sleepers the fixings by incorporating steel
Project: Saltburn Viaduct, or sole pads would not support the reinforcement bars which were
North Yorkshire leg loads which were up to 80 kn in held into place with a special quick
some of the leg clusters. A total of curing resin. The ties then had to be
Eleven no piers and abutments 110 crane mats were used. tested using a special pull tester to
had fully boarded scaffold around Some piers rose from the ravine determine the quality of the fixings.
them for access and to give support and sheer rock faces which ran Some had to be re-sited and retested
to the 1.28m deep dessa beams through the centre of the viaduct due to sub-standard brickwork.
spanning the arches. The 10 no and this problem was solved by As a result of this intensive testing
arches were spanned 15 metres to using gallows brackets made from regime supplementary brackets
provide a fully boarded deck below RMD soldiers bolted to and through and wire cables were used giving
each arch. Scaffolding was then the brickwork with the scaffolds additional support.
punched from the beams along the springing from these. In total, During the erection process the
two long sides of the viaduct. some 800 tons of equipment was client decided to have the whole

10 | SCAFFOLDING MAGAZINE 2022

16/03/2022 10:58
08_15.NASCmag22.Projects.indd 10 16/03/2022 10:58
08_15.NASCmag22.Projects.indd 10