Yes, you will need a jack for a rim joist replacement. To prevent sagging and facilitate the removal of load-bearing wood, you’ll need to relieve the pressure from this joint before beginning work. 

Due to hydraulics and other specialized equipment, a sill plate and rim joist replacement are not typically a DIY project. Hiring a professional structural engineer and experienced contractors is the best approach to replacing rotted sill plates and rim joists.

Stick frames, metal frames, or prefabricated concrete frames are included in framing a house, along with creating the framework and space for windows, doors, and entryways. Other aspects of developing a home—like drywall, insulation, windows, doors, and more—are not included in the cost to frame a house.

Yes, you can find ceiling joists using simple tools if a stud finder isn't available.

Using a hammer requires patience and a keen ear. Gently tap the ceiling in a grid pattern, listening for sound changes. A hollow sound indicates space between joists, while a solid, dull thud suggests a joist. Mark the location with a pencil and confirm by tapping from different angles.

Alternatively, you can use a nail, but this method will leave small holes. You'll feel increased resistance when the nail hits a joist. Mark the spot and repeat the process every 16 or 24 inches to map the joist locations. This method is considered less reliable than using a stud finder.

Learning how to frame a house includes picking the right lumber for the job. Most people will want to pick pine, spruce, or fir for the framing. These types of lumber are affordable and produce sturdy framing for structures. Look for kiln-dried lumber to reduce the risk of shrinkage or insect damage after installation. As part of what’s included in framing a house when you hire a professional, the contractor should order the lumber, so you don’t have to worry about finding the right lumber.