Inspire : Public Works Professional Sept - Oct 2013
44 Public Works Professional September-October 2013 COLD WEATHER ROAD MAINTENANCE SIMON PULFORD TECHNICAL OFFICER, BRIGHTON COUNCIL, TASMANIA, ASKS: Can anyone offer tips on maintaining sealed roads during cold, wet weather, like what Tasmania is experiencing at the moment? We have digouts that we cannot complete due to the length of time waiting for the FCR [ﬁne crushed rock] to dry out, therefore being unable to cap off the repair. There are also potholes to be ﬁlled, but the holes are too wet. Having tried cold and hot mix asphalt, both disintegrate soon after placement. Countries that have consistent snow or very cold temperatures for months at a time must still maintain their road network during this period, but how best to do it? At the moment our approach is to do a temporary repair and wait for the weather to warm up. ROBERT LADD MANAGER ENGINEERING, WASTE OPERATIONS AND CONTRACTS, PYRENEES SHIRE COUNCIL, VICTORIA, SAYS: In the Pyrenees we have prolonged wet winter periods. The best advice I can offer is cement-stabilised rock -- around three per cent. You rely on the material's increased modulus rather than compacted density. This does not mean you don't compact it, it just means it's not as important as normal. Otherwise, we use a lot of in-situ stabilisation of the existing material as a patch repair, and apply an emulsion seal over the top. Again, we use around two to three per cent cement content. TROY CARRIGAN SALES MANAGER, FULTON HOGAN: We manufacture and distribute a product called EZ Street. This is a permanent Cold Asphalt that can be used in all weather conditions. KNOWLEDGE CENTRE ASK YOUR MATES THE HOT TOPICS OF DISCUSSION ON THE IPWEA ONLINE FORUMS. JOIN THE DISCUSSION NOW AT www.ipwea.org/askyourmates ALSO UP FOR DISCUSSION • Residual values • Grass cover on table drains • Flashing lights at pedestrian crossings • Natural watercourse over private property • Asset Management versus Human Resources # ARE FIREBREAKS A CAPITAL ASSET? DAVID LEMCKE SENIOR PLANNER, WYONG SHIRE COUNCIL, NSW, ASKS: I've had some robust discussions about whether a ﬁrebreak (called an Asset Protection Zone in NSW) can be considered a capital asset. It may seem counter-intuitive, but I believe the initial establishment or expansion of the ﬁrebreak (even if mostly vegetation management) should be termed CAPEX, and ongoing maintenance OPEX. An alternative method to provide the same level of risk mitigation might be the construction of a six-metre masonry wall as a radiant heat shield -- there is no doubt this would be considered CAPEX. Another way is to consider these works as landscaping establishment, which is also CAPEX. GRANT SHELDON MANAGING DIRECTOR, SHELDON CONSULTING, SAYS: An interesting question. However, I think it needs to be considered as part of the valuation of land and not as some separate asset. The Asset Protection Zones are cleared land intended for ﬁre protection, and probably should be valued as land improvement necessary to protect other areas of land.
Public Works July Aug 2013
Public Works Nov Dec 2013