There are different sizes when framing lumber. The most common size of framing lumber is 2 by 4.
it depen on the size of the joist
A 20 delta size nail should be used to attach the band joist to a joist when end nailing. A 16 D can also be used.
A joist note on a first floor plan would refer to the Joist below that floor, a joist note on the third floor plan woud be for that floor.
Not enough info. - Depends on size of joist and size/weight of engine. For instance, a 2x4 would NOT hold any V8 engine ! - Be safe, rent an engine hoist and do it properly.
The factors that are involved are the span you are covering, the type of roof and the pitch of it. How you are bracing the rafters. Wider the span, wider the joist. 2x6 is usually enough for most house construction.
Noramally 9.5 inches unless you have a special load on the joist.
Floor joist or ceiling joist? Floor joist have a board on the end all the way along the side of the building called a rim joist. Like the cross bar on the top of a T. Ceiling joist are nailed down into the top plate of the wall and to the rafters where possible.
A joist is a beam, a supporting structure in a building. The roof joist was riddled with dry rot and had to be replaced.
it all depends on the span,u can cut down on the size of your joist by putting a mid span beam most likely an lvl. The smallest you can use safely most of the time is a 2x8.most common is probably a 2x10,but if you are spanning more than eight feet without a beam then you should look into tgi joist, they are manufactured joist to carry a certain load and the lumber yard can tell you which ones you will need when you go for a take off list. your best bet is to talk to you town building inspector before buying anything The most common wood used for joists is SPF (spruce, pine, fir)
There are several ways, but probably the easiest way would be to temporarily buck under the afflicted ceiling joist with a 2x6 temporarily, until the joist is in line with the others. Then go into the attic and cut and attach a 2x6 to the joist and vertically to the roof ridge. Remove the buck. The joist should stay in place.
2X8 set 16 inch on center.
Not knowing if the joist are in need of repair from rot (deterioration) or broken/damaged then replace ment of joist may be necessary. First get a replacement joist of the same or better species and treatment content and dimensions as the existing joist. Then cut the joist to the same length. You may have to cut a small angle on the bottom end of the joist to aid in working it over and between the girts and decking boards. Work the joist within a few inches of the joist to be replaced. Use a short 4x4 to drive the joist or a wood block to strike with a hammer. Take a couple of scrap 2x's and temporarily fasten to the girts and new joist to prevent movement. Then you may try a couple methods to remove the old joist. If the decking is fastened with screws then simply backout the screws. If it is nailed, then a 10 lbs. hammer can often remove most anything you need and is a great stress reliever but I recomend you use a reciprocating saw to cut the fasteners between the joist and decking. Usually the vibration of the saw and nails being cut will loosen the deck side of the fasteners and allow you to go top side and pull the old nail halves out. Once the old joist and fasteners are out you can carefully work the new joist in place. I recommend fastening the old decking to the new joist with properly coated screws or a hotdipped galvanized rink shank nail. Repeat joist replacement as necessary on other joist.