Do they not have grade eight roofers in the US? 7.12.2018 01:38 tarihinde Michael Patrick yazdı: > > great you name carpenters, because there were actually some > problems in the > past classifying people working with wood. ... Can you explain the > difference between a framer, a carpenter, a cabinet maker, a > joiner, a finish carpenter, a timberman, a ring builder, a jerry > man, a binder? > > > There could only be a problem classifying trades if existing lexicons > are ignored. At least in the U.S., currently, there are fairly exact > definitions for trade classifications, down to the types of tools, > specific materials, certification, and processes where required. > > Example: /"Grade 9 roofers must be fully skilled in installing new > roofs. They must have the ability to apply the starter row of shingles > to insure that they overlap properly and that they are securely > fastened to the subsurface to eliminate possibility of leaks. On > built-up roofs, they must be skilled in applying roofing felt, asphalt > and gravel, or other topping material, and in sealing joints of > roofing accessories with asphalt. In addition to work at the grade 7 > level, the grade 9 roofers must be able to install and repair the > metal roofing accessories themselves, such as gravel guards, > flashings, gutters, valleys, vents, pipes, and chimneys.They also must > have the ability to cut and form metal accessories to meet roofing > requirements, to fasten them to roofs with nails or screws, to solder > metal joints, and to cut and shape shingles to fit around the > accessories. In comparison with the grade 7 level, the grade 9 roofers > also must be familiar with a greater variety of roofing materials and > their uses and methods of installation. They must know how to apply > wood, asbestos, slate tile, and composition shingles; metal roofing > panels; roofing felt and asphalt. When required, they must be able to > apply asbestos siding materials.In addition to the hand tools used at > the grade 7 level, they must be skilled in the use of shingle cutters, > metal snips and saws. "/ > > International Open BIM systems standards ( Building Information > Management, which covers the entire life cycle from natural site, > through construction and operation, to demolition and site restoration > ) have even finer grain of detail. > > Some of them might be synonyms, some reflect regional differences > (e.g. AE > vs. BE)? > > > Since the labor and materials supply chain is international, there are > multi-lingual crosswalk tables between the U.S. and E.U., between the > E.U. and the member countries. > > A casual observer might observe a job site during a pour, and classify > the workers as 'concrete workers', when they are actually Formwork > /Carpenters./ > > Folksonomies <https://en.wikipedia.org/wiki/Folksonomy> like OSM have > benefits, but as they expand, the downsides begin to matter, and there > usually isn't an effective mechanism to refactor them. > > Sometimes the apparent complexity of these existing standards appear > intimidating, but they all have a root, branches, and leaves, and one > can select the level(s) of abstraction which are coincident with > common language. i.e. in one place you can see what the differences > /and similarities/ "... between a framer, a carpenter, a cabinet > maker, a joiner, a finish carpenter, a timberman, a ring builder, a > jerry man, a binder" are, and where your term lies in the hierarchy. > Sometimes, the 'root' concept and groupings are not obvious. > > This also leaves room for reconciling it with other classifications - > Japanese style carpentry roles are more or less orthogonal to Western > style, more intensely aligned to product, the worker literally might > select and fell the tree, mill that wood, and eventually carve it to > shape in it's final position. > > It's a question, to a degree, of "re-inventing the wheel". There are > already existing tagging schemes in the world ( some going back to the > 1700's, from guilds and registries ). It might be worth a few minutes > to seek those out, and adopt from those. > > Michael Patrick > > > > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging
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