CU4201
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CASEstudy<br />
Speaking about the project, Jarrod<br />
Hulme, MD Structural Solutions at Taziker<br />
said: "We were working with an already<br />
tight programme schedule, making it<br />
challenging to decide how to start the<br />
model knowing there would definitely be<br />
upcoming design changes. With time<br />
pressing on, and with such a large<br />
volume of steel needing to be secured by<br />
our procurement department, the team<br />
decided to opt for using a largely<br />
complex custom component with over<br />
860 parameters.<br />
This was also necessary as the viaduct<br />
follows a very gradual curve over a 3.4km<br />
distance, meaning it was near impossible<br />
to detail correctly using a 'copy to another<br />
plane' or 'copy to another object' approach.<br />
"Through our use of custom<br />
components, once the crossbeams had<br />
been put into the model across the top of<br />
all the pile caps, all that was required was<br />
selecting one crossbeam, then another<br />
and the custom component created in<br />
Tekla Structures would automatically fill<br />
the gap with the top deck and all the<br />
latticed steelwork. This method allowed<br />
for modifications to be made to every<br />
deck - simultaneously and efficiently -<br />
whenever we were provided with a new<br />
design change, as all parameters were<br />
interconnected.<br />
"Once steel started to arrive on site, it<br />
was reported that our 12-metre decks<br />
were landing on pile caps to within a<br />
2mm tolerance at every single location -<br />
a fantastic result and our team were<br />
incredibly proud that the method was<br />
so successful."<br />
As well as using Trimble's Tekla<br />
constructible modelling software at the<br />
detailing stage, Taziker also utilised the<br />
cloud-based Trimble Connect platform<br />
once the steel had reached fabrication,<br />
enabling greater communication and<br />
traceability throughout.<br />
Jarrod explained: "By using Trimble<br />
Connect, the 3D model was easily<br />
accessible to the fabrication team in the<br />
workshop. With access to this level of<br />
detail and data, they were able to easily<br />
keep track of the steelwork coming into<br />
the shop, a task that would have been<br />
incredibly challenging without the software<br />
due to the sheer volume of steel."<br />
In total, Taziker produced over 240<br />
general arrangement drawings, over<br />
1200 assembly drawings and over 1700<br />
fittings drawings for the fabrication and<br />
construction of the Colne Valley Viaduct<br />
temporary jetties.<br />
www.tekla.com<br />
January/February 2024 19
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