QUOTE (pbangarth @ Oct 12 2010, 08:09 AM)

Gasfitter: ??
Insulator: ?? "carpentry"
Ironworker: ?? (Industrial Mechanics maybe?)
Landscape gardener: ?? "carpentry"
Mason/bricklayer: ?? (though Sculpture is listed under Artisan)
Plumber: ??
Roofer: ?? "carpentry"
Sprinkler systems installer: ??
Tilesetter: ?? "carpentry"
I know from my own experience in training for rough carpentry, it has uses that cross over into a lot of these areas, so I will toss "carpentry" inside the quote where I think it is applicable in most cases. And I'll toss a description down here of why that might be the case:
Insulator: ?? "carpentry" ... but depends on type of specialized insulation, some of the foam systems require very specific knowledge of the preparation and use of the product, where as fibreglass batt insulation (use of gloves, glasses, coveralls with hoody is advisable but some people actually get used to the glass shards in their skin and clothing and don't care/want to admit it bugs them aka tough guy) is just a stage of framing and closing in a structure to give it the necessary ®estitance rating for energy efficiency aka heat loss.
Landscape gardener: ?? "carpentry" ... but what you have here are actually two separate things, the preparation of a foundation and laying of drainage and finishing up a lot have a lot of landscaping in them that carpenters can handle but specific knowledge of plants? Only if they are a gardener on top of the carpentry. Basicly, I am saying some carpenters start out green grunt ditch diggers and don't forget the importance of safe shoring up of earth and drainage for run off water.
Roofer: ?? "carpentry"
Tilesetter: ?? "carpentry" ... I have seen both of those fall under carpentry before, while sheathing and rain screening the building and in finishing up the interior and exterior of the surfaces of a building.
The reason a lot of these trades end up being listed separately from carpentry is that they end up being areas of the construction process that are specialized in so as to speed up the process while maintaining quality in those areas with very specific products that are marketed for their quality and craftsmanship, at the higher skill levels truly becoming an art where you can practically see a tradesperson's signature in the quality of their work and those working under them and around them. Often the higher skilled trades person will advocate for a grade of work that may well exceed the industry standards set out in the Building Code and the engineer who approved the building plans in terms of cost as well as structural integrity but they should always have appropriate building permits for their work.
For evidence of what I am talking about, one of the better shows I have seen in regards to the subject is the Holmes line of shows. In a way, he is kinda this generation's Bob Vila (though some of that guy's practices where questionable at times because of specific local conditions not being applicable to the products he was hawking), where as other shows seem to gloss over details in construction far too much so as to focus on the design side of things for the sake of drama or ignorance.
I would say some of the Plumber, Electrician, and HVAC stuff does benefit from Carpentry knowledge as well, especially so they don't compromise structural integrity when they cut (into the stud supports of load bearing walls or cause window frames and floors to sag) to run their pipes, wires, and vents.
Does that help your Artisan description? I would say that having appropriate knowledge skills narrow down what something like Artisan does for a character would be helpful as well, though I am uncertain how that might take form as assisting or defaulting dice to the Artisan dicepool.