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--- Philip Thomas <[EMAIL PROTECTED]> wrote: > > Why, in heaven's name, are the hotmixed roads not > level? There are at least > a half a dozen strange bumps at unexpected places > from Campal to new Patto > Bridge. The road doesnt seem to have been properly > leveled at all! How did > this goof up take place? Seems to spoil the whole > purpose of the > beautification exercise. Sad. > Philip, I don't know if you have seen roads hotmixed abroad. In the UK and here in Australia (and probably in other parts of the world too), they first remove all the surface layer down to the foundations which is usually of cement-concrete. It is only then that the layer of hotmix is laid. This way, the newly-laid layer is quite level, no bumps. It appears to me that in Goa, they lay the hotmix on top of the old layer, which not only adds to the height of the road with respect to the pavement, but also adds to any underlying bumps (dips get filled in, however). And here as in the UK, they do one lane of the road before attempting the other lane, to avoid undue traffic jams. If this is not possible, the works are carried out starting Fri night 8:00pm ending Sunday night 8:00pm (48 hours round the clock), with powerful lights at night - power provided by silenced diesel-generators. Even tram tracks here (which share the road with the automobile traffic) are renewed periodically over the weekend breaks (this much more involved as the concrete under the tracks has to be broken up first), in small sections at a time. Notice to traffic is given at least a week in advance, warning of possible delays by way of solar-powered (backup battery for nighttime use) road-side illuminated signs. I am not a civil engineer, but observing road-building in my drives around Melbourne and its outskirts indicates to me that that most roads have a concrete base of at least one metre (motorways have double or more). I had observed roads in Goa being laid (in the 70s) with the poor lamanis hammering in laterite stones with sledge-hammers maybe to a depth of a foot, followed by a sort of levelling with a road-roller, then the layer of tar with the basalt grit (roadmetal) being chucked on top of it. Now of course, they add hotmix to this layer. Add a few layers and down the decades, the roads will be higher that the pavements! Cheers, Gabriel. Find local movie times and trailers on Yahoo! Movies. http://au.movies.yahoo.com
