Where can I find all the sections used to build all the structures in Skyrim, particularly Dwemer structures and machinery? I've looked on the wiki but can only find things that you either fight or pick up. What I'm looking for are architecture and parts of machines used in the construction of the locations.

World Objects->Statics

Should be right at the bottom of the list, just above 'All' for the main-group. Within that, it's subdivided into things like "Architecture", and then you usually have a prefix for the type. I think Dwemer stuff is Dwe, like "DweHall2way" for a 2-way hall, for example.

I think I didn't explain myself properly. I meant on the Net. I'd like to find everything listed on the Internet so I can plan things properly. All the same, you've still been a lot of help. Thanks.

For example, is there anything of Dwemer origin that I can use as a smoking chimney? What I have in mind to build will need to release heat, so an outlet will be very handy. I guess something from another origin will do because I could modify it later, but Dwemer would be ideal.

Also, how do I load things from Dawnguard, Dragonborn and Hearthfire? So far I can only get it to work with the Skyrim plug.

Ah, sorry.

To load Dawnguard/Dragonborn, stuff, you'll need to set it to allow MultipleMasters; you have to add a particular line to the CK's .ini file. I'd recommend Googling it, since I can't remember the exact line. I think it's something like, 'bAllowMultipleMasterLoads=1'.

If you're using the standard version of Skyrim, you'll also need to add the .bsa files to the 'Archive' section at the bottom.