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Upper Hutt Leader : November 30th 2011
14 UPPER HUTT LEADER, NOVEMBER 30, 2011 NEWS Muldoon's Corner - update November 2011 The end of the road. Fill is starting to cover the old road as tra c is now running over the final section of the project. The final cut They say that the first cut is the deepest but up on Muldoon's Corner most of the cuts have beendeep--upto55 metres in some places. One exception is the final cut, 'Cut 900', which is at the bottom end of the project. The other cuts, such as Muldoon's Corner itself, have cut huge swathes through the hillside to re-route the Rimutaka Hill Road. This final cut is to trim material from the surface of the rock face in order to widen the area where the new road joins the existing one. We started working at this location -- about 1km down from the summit -- last week during extended work hours. This is because it takes a while to set up the machinery necessary to actually carry out the work and if it was done within the normal contract working hours very little excavation would get done each day. (This would mean more disruption over a longer period.) The machines have to sit in the downhill lane and nibble away at the rockface as they cut it back to the required depth to realign this final section of the road. Drainage work has also started in this area. The team have been trenching across the road and laying a new culvert to carry stormwater under the new road. In order to do this, an excavator had to sit in the uphill lane while digging across the downhill lane. This meant that for the first and only time during the project we had to close the road entirely for a short period. This work was done overnight to cause the least disruption to drivers and of course the digger would have moved to allow emergency services through if necessary. We're finishing early Never trust the weather. Just to remind us, we copped another weather bomb recently, with lashings of horizontal rain and wind gustss of 135km/hr stopping work up on the Rimutaka Hill Road. Work such as sealing is a ected by wet weather, and extremely windy conditions mean that we have occasionally had to close the site for safety reasons. This is why we make sure our work programme includes enough time to allow for days that may be lost through bad weather. In fact, the team have made excellent progress this year and despite some really foul weather during the previous two winters, are now on track to finish in March 2012, more than three months ahead of schedule. One milestone after another .... Another milestone was reached on the project this month, with 240m of new road getting its first coat of chipseal on 11 November. We normally need a three- or four-day window of fine weather to allow us to seal the road surface, and even though we were ready to start laying the chip seal surface at the top of the project, we had to wait several weeks before the unsealed surface had dried out enough for us to start sealing earlier this month. We are aiming to lay chip-seal along the new road before Christmas, assuming the weather continues to play fair. Final asphalt surface will be laid over that at the end of the project early next year. Meanwhile we have already reached yet another milestone, with tra c running over the final section of fill lower down the project from 16 November. This means tra c is now completely on the new alignment and the old twists and turns on this 1km of the Rimutaka Hill Road are now history. Sealed with a hiss All roads, or pavements in engineer- speak, are constructed in layers from the bottom up. The pavement structure is carefully designed to distribute the high wheel loadings at the road surface to its underlying foundation. We are laying a granular pavement at Muldoon's Corner. It is made up of two layers -- basecourse (top), subbase (middle). The road needs a firm base, the subgrade, (bottom) to support the pavement on top of it. The subgrade is the prepared upper surface of the ground at the end of the earthworks operation -- either by excavation (like through the cuts) or by building it up (like the fill in the old gullies) until it is the right level and shape. The level, shape and strength of the subgrade are critical to the success of the final pavement. Above the subgrade are the 150mm subbase and basecourse layers, which are made up of di erent size aggregates (crushed stones) to spread the load from the wheels. The subbase aggregate is crushed to a maximum stone size of 65mm, while the basecourse aggregate is crushed to a maximum size of 40mm. On the unsealed sections of road tra c is running on the subbase or basecoarse pavement layers. Once basecourse construction is finished a chipseal surfacing is applied. This is a layer of hard stones embedded in a layer of bitumen. The bitumen layer provides a waterproof membrane to prevent water getting into the pavement. The chips protect the membrane and provide a surface that tyres will grip in all weather conditions. The chipseal being laid on the hill is not the final surface, but a 'First Coat Seal'. The final surface, a type of asphalt surfacing known as 'macadam', will be laid on top in the new year, giving a smooth but grippy ride similar to the rest of the Rimutaka Hill Road. In order to preserve the strength of the pavement layers and prevent failures like ruts forming, it must be kept dry in all conditions. Where water cannot drain away naturally pavement drains are installed. These drains are up to 1.5m below the rockfall channels and kerbing. The drains and channels discharge into grated sumps which are connected to stormwater systems under the road. Steam can be seen pouring from the bitumen laying truck as sealing work starts on Muldoon's Corner. Two sizes of chips are laid on the bitumen. Large ones are laid first and smaller ones fill in the gaps. Our contact details For more information 0800 100 082 Helen Pinson Ph: 04 894 5229 Email: firstname.lastname@example.org www.nzta.govt.nz/muldoons-corner Young gun's designs delight judges Award winner: Curtis Baigent has won a top international creative design award. Flawless design: One of Curtis Baigent's designs which helped win him a prestigious design award. By AMY JACKMAN A former Upper Hutt College student is one of only four people from the Asia-Pacific region to win a prestigious Art Directors Club Young Guns award for creative designers under 30. Curtis Baigent is one of 50 international winners of the award, which is competed for by thousands of designers from more than 40 different countries. Baigent says winning the award is overwhelming and flattering. A great deal of the contempor- ary designers that I am in awe of have come up through the ranks as ADC young guns. It's nice to be recognised along- side such a high level of talent. However, in saying just that, these are indeed the people that I look up to and am inspired by. They're on this pedestal way up in the clouds. To me, it all seems very odd. It's a feeling that I can't really make sense of.'' Judge Marc Cozza, who was one of the first Young Guns winners, is impressed with Baigent's range of work. Curtis Baigent is one of those rare artists whose combination of skills spans from academic draftsmanship to conceptual animations. Dare I say, he's a renaissance man?'' Another judge, Nina Boesch, says there seems to be nothing Baigent can't do. His design and illustrations, his sense for typography, his animations, motion graphics and 3-D skills are flawless. Is there anything this guy can't do?'' Baigent has worked on a range of projects in New Zealand includ- ing the Freeview television adver- tisements and on the music videos of Brooke Fraser and Shihad. To me it's important not to get caught up with one particular style or medium or piece of software. I'd like to think that my skills and my eye can be applied to any kind of visual problem.'' He says some of his best child- hood memories involved drawing with family and friends. We usually drew Teenage Mutant Ninja Turtles and other cartoons that I was currently in love with. I followed this love of creating images throughout school, and then after a brief university affair with a computer science degree, I realised that I needed to be doing what I loved. I moved back over to art and design, which eventually led me to animation and visual effects, and haven't looked back.'' The Art Directors Club was founded in 1920 and created the Young Guns award in 1996. The awards were created to identify and honour young creative designers for their talent, ambition and potential.
November 23rd 2011
December 7th 2011