Since there is some question, let me go over some of the cross sections/cutaways in more detail.
So here we have Jefferies original along side Shaw's recreation. Shaw did position a few things, but I feel he kind of did his own thing. I think I see what Jefferies was going for. I haven't had a chance to draw it that way. Shaw did line up the secondary hull decks with the windows, so his decks and mine look very similar. I did take that odd shape, just forward of the pylons and hanger, to be part of the engine and placed Main engineering and the tube structure just in front of it, leaving room for the hanger foyer we see in Journey to Babel. Shaw did have a good idea for the hanger that I went with. He had the elevators forward of the hanger, where we see them in TMP. So I went with that with the foyer between them. It very much resembles what we see in 1701-A in ST:V. I would say these are very inspiring, but neither one has any details. Shaw went as far as putting the briefing room with its arched beam in a few places.
And here we have the drawing that started it all. The first true cross section. We won't get into the flaws, but it is to the correct scale and has the correct number of decks in the saucer (per TMOST). FJ went with the longer hanger instead of following Jefferies cross section. And his decks in the secondary hull are very squished. The thing he did right was to use Jefferies original shape of the secondary hull, though now Datin's interpretation in the 11 foot model has taken precedence as the canon shape. FJ crowded the secondary hull with crew cabins and rec areas, including the once mentioned bowling alley.
This cutaway has the right decks in the saucer, though the placement of many things is non-standard. The artist (I only have digital copies of this and I do not know their name) kept to the canon scale of 974 feet and went with the TMOST text description as FJ used for how many decks in the saucer. I'm pretty sure this one predates Drexler's cross section and some of his ideas seem to have come from here. Some of the idea in this come from FJ and some were very original. This was produced by Paramount (you can see their logo to the right of the lower black bar) so is somewhat official, though not canon.
This is the only cross section to appear on screen. And yet it is quite flawed. It is the wrong size. But we can see the similarities to the cutaway just above. It is fully filled in, but few things are called out that we didn't see. This would be a good starting point if you want to keep the exterior appearance and the interior set height and follow the TMOST deck descriptions. But I started with assuming the information in TMOST is accurate and that the deck descriptions and 947' length are correct and that the set height has been extended up for filming purposes rather than representing the real deck height. So this drawing can inspire, but it hardly helps me fill things in. I'm placing sickbay at the aft end of Deck 7 and the transporters to either side forward on Deck 7 so they won't be represented in the cross section. And just what that massive horizontal thing in the center of the secondary hull is is a mystery. It isn't labeled and there should be a corridor extending forward from Engineering. So as far as I'm concerned, this drawing is too flawed to do more than inspire.
This one gets closer. It is to scale and it features a lot of things that I think are good. The hanger is the right size, main engineering is in the right place with appropriate mechanics connected to it (though I have chosen a different design). It has some flaws. I would not place the 1st season Engineering room in that location. But he sunk the bridge like Jefferies did in his back in 67.
This one has a lot going for it. Scale, good space assignment, but if you notice, a lot of areas are just blank. Maybe this is the way to go. This one features fewer decks so it doesn't match my goals.
And then there is this inspiring beauty. This is the level of detail I am going for. Again the wrong deck layout for my project, but lots of things are right. Scale, sunken bridge, Main engineering on the hanger deck, hanger aft of the pylons, 1st season engineering in the aft end of the saucer, and so many more good things, and no details of the inside of the nacelles.
Moving on to Phase II, we see Jefferies plan and a version that is filled in. Jefferies keeps wasting the space in the outer part of the saucer. But we see where main engineering is. Jefferies actually labeled it, though you can't see it in this drawing, I do have an image where it is quite clear. Plus a hatch on the top and the bottom. Here is where we first have an ejectable warp core.
And then this one. Nothing is out of scale or out of place. Everything works. But wrong version. So I take this and apply these to the TOS ship. Same corridors, turbolifts, space allocation in the saucer (sick bay, transporters, etc.). And nearly everything we see in the secondary hull here we saw in the movie. That parts you can't see I carried over from the TOS design. The way I envision the refit going, they could update the interior while they were working on the exterior. The secondary hull was gutted and where old main engineering was is not the cargo hold. Everything for Main Engineering/power has moved to the front. So they could work on both areas at the same time. Put enough manpower on it and it could easily be done in 18 months. The crew was obviously working so they could have helped the refit contractors to speed up the process. They could instantly have started installing the new warp core before the old was was torn out. Remodel the interior while the exterior is altered. And Scotty was still working on the main engines when they were forced to launch. But there is a lot you don't see here. A lot to fill in for a cross section. And I need a cross section because some of the lines of the model can't be seen without it.
Which leads to this. I have the bridge, main and 1st season engineering, the hanger, the lower storage/maintenance bay, the warp core and the plasma conduits (that odd shape in orange would be a T shape from the front with the plasma going to each nacelles and the aux energizer in the saucer. The plans above it are, from right to left, a set plan from season 1 with the bridge below that I used to insert the bridge to the right scale; The Cage with a section of corridor with 3 ceiling heights (10', 9', and 8.25'); Where No Man Has Gone Before; Season 1; Seasons 2 & 3. Season 1 featured a lot of redressed sets. Season 2 expanded the main set (larger briefing room/rec room, auxilary control) and season 3 featured the last new set, the Herbarium (which I am not yet happy with). I have planned out the turbolifts and the corridors and have put those in. Decks 4, 5, and 6 will feature concentric rings with cabins outward and perhaps some other storage or work spaces inward. Deck 4 features storage outward. Deck 7 has a corridor matching the set. Deck 8 is lowered in front because for TMP This is where the deck level is for the airlocks. The Herbarium is either here or in the secondary hull. Probably here because it is a close as TOS got to what FJ drew on that deck. The short deck below is for machinery. What you can't see is that in the four places where we have windows and a top skylight, I have rec rooms forward P/S, the gym aft starboard and the theater aft port. The TMP rec room is both too small and too tall to fit in the TMP reft so on that I resized it to go further inward and to fit the saucer. As it is in a completely different location from the Deck 8 location TMOST has, I consider it part of the refit. I crammed in the 1st season egnineering to the aft end of the saucer by raising it up (that ridged piece is now part of the roof) and adjusting the floor so we could have a cross corridor to get to it. This deck area would be a pie shaped piece going to either side, so when this is removed for TMP, the rec deck fits closer to the impusle engines. Not sure if the refit has a theater or would just use the rec deck. It might be mirrored on the other side. But these things don't appear in the cross section anyway.
So there you have it. Why each drawing works and why it doesn't. I don't like the blank areas in the one. Aridas Sophia's is what I am aiming for, but with my layout. So how to fill in the rest... I have corridor, cabin, and briefing room drawings. I have the sets I can use to craft few other rooms. But the rest? If I don't want it blank, what alternate is best.