Table of Contents
What is the purpose of jack studs?
A jack stud is a vertical structural element that sits below and supports a header to transfer its loads downward to the bottom plate and ultimately to the structure’s foundation. Its length determines the header height and is critical for rough openings of windows and doors.
Whats the difference between a king stud and a jack stud?
What are king studs? King studs run floor-to-ceiling, adjacent to and beyond the length of the jack stud, rather than supporting the header like a jack stud. They act more like a traditional wall stud, but usually fall out of the 16- to 24-inch spacing of normal studs.
What is a jack studs in framing?
Timber wall framing A jack stud is a stud that has been cut down to be placed above and/or below an opening. The jack stud provides support to the lintel trimmer and sill trimmer.
What is another name for a jack stud?
The jack stud is sometimes called a trimmer stud.
What is a trimmer or jack stud?
Trimmers are installed parallel to the primary floor or ceiling joists and support headers, which run perpendicular to the primary joists. It can also refer to a jack stud that supports a header above a window or door opening.
How do you put a header on jack studs?
Make a header by fitting two 2 x 8s around a 1/2-inch piece of plywood. Cut the header to fit between the king studs. Install a cripple stud between the header and the top plate, halfway between the king studs. Toenail the cripple stud to the top plate and the side of the header.
What is a top cripple?
In carpentry, the term “cripple” refers to a special-purpose wall stud or roof rafter. A cripple stud is located above a door or window or below a window. A cripple rafter runs from hip to valley on a roof or is cut short to allow for an opening such as a chimney or skylight.
What is the purpose of a header?
A header is an identifier placed across the top margin of your document that increases usability and makes it look more professional.
What is the bottom 2×4 of a wall called?
A horizontal piece at the bottom of the wall is called the bottom plate. The studs are nailed to this plate, which is nailed to the floor. At the top of the wall is the top plate. Often a doubled 2×4, it anchors the top ends of the studs as well as ties the wall into the ceiling.
What are headers for wall framing?
A header in the construction and engineering world is a beam over an opening that disperses the structural load to the outside of the opening to keep structural integrity. Otherwise, the load from the roof, floor, or whatever is above the opening can lead to stress that can cause cracks, shifting, or even worse.
How many jack studs do you need for an 8 foot opening?
R603. 7 Jack and King Studs SIZE OF OPENING (feet-inches) 24-INCH O.C. STUD SPACING > 3′-6″ to 5′-0″ 1 2 > 5′-0″ to 5′-6″ 1 2 > 5′-6″ to 8′-0″ 1 2 > 8′-0″ to 10′-6″ 2 2.
What member of a wall holds up the header?
The header fits between two king studs and is supported by one or more jack studs at each side of a rough opening.
Why are jack studs shorter than King studs?
A king stud is one that runs continuously from the top plate to the bottom plate. The jack stud is nailed to the king stud, but it’s shorter as it supports the structural header or the flat 2x material that you use for a door in a non-load-bearing wall.
What is the top plate?
A Top Plate is the continuous timber beam on top of the walls that supports the roof structure by carrying the vertical forces from the rafters to the wall studs.
What does a cripple stud do?
Cripple Studs – short studs installed above a header or below a window sill or saddle. In addition to their load bearing function, cripple studs maintain the uniform spacing of the wall studs upon which the interior and exterior wall coverings are attached.
What is trimmer joist?
1. Also called: trimmer joist. a beam in a floor or roof structure attached to truncated joists in order to leave an opening for a staircase, chimney, etc. 2. a machine for trimming timber.
What is a trimmer in slang?
Definition of ‘trimmer’ 4. a person who alters his or her opinions on the grounds of expediency.
What is a trimmer for shaving?
Trimmers are devices that “trim” your hair. Trimmers consist of 2 or more sliding blades that are used to trim the hair. When your hair is passed through the blades, they are cut. Most trimmers are small and have a small cutting width.
Can a jack stud be two pieces?
On smaller openings, a single king stud and continuous jack stud are usually OK, but for larger openings, more than one king stud may be required. If the opening is 5 feet wide and you’ve taken out four studs, add two studs to the assembly on each side.
Does framing have to be perfect?
Unlike finish carpentry, framing doesn’t have to look perfect or satisfy your desire to fit together two pieces of wood precisely. Whether you’re building a house, an addition, or a simple wall, the goals when framing are strength, efficiency, and accuracy.
Can you toe nail a header?
Because the “toe-nails” cross one another in the header or ledger board when used to secure a deck joist, this connection can actually be stronger than straight-in or end-nailing the deck joists from the other side of the ledger or girder.
