A few pointers, as I have done a few time-lapse sequences also for the construction industry:
Do not plan to repeat frames to make the final render longer/slower, just shoot enough frames to use 25 or 30 (depending on the country, but not all that important on the net anymore) individual frames per second for smooth result. I actually shoot 2 or 4 times FASTER/MORE fames than planned, as it is easy and smooth to speed up the sequence*, but slowing down not enough frames makes the movie jerky. Shooting 4 times more than needed gives also the chance of making part of the movie slower if needed, like a section where construction happens faster than average.
There is no point in shooting RAW at full resolution, if your camera can shoot smaller JPG, about 2500 pixels wide, it is plenty enough for HD video, also the JPG compression needs not be the highest quality, level 8 is good enough. This is to save space on the memory card and make editing faster. Only if you want to make pans and zooms on the final movie you need to shoot bigger stills. Use fixed aperture with auto exposure time. If possible, power the camera from AC outlet.
I have used FCP to make time-lapse. There are two ways of doing it in FCP: make the default length of each still frame one video frame, then drag the numbered stills to timeline. This needs to be rendered to make a movie, as this is understood as series of stills, pre-render. This is the clumsy way. The preferred way is to import the stills as a sequence, which makes a still-per-frame movie automatically.
Quicktime Pro can also make movies quite easily. I have used it once at least, but do not remember the details.
*) if you speed up the sequence 200 or 400%, the editor just drops out every other frame or 3 frames out of 4 without a need of morphing intermediate frames.