A joist can be a board as small as a 2 x 6 on up to a 2 x 12. A "beam" can be as simple as two joists nailed together. Beams will change depending on the load required of it. Some beams will require three 2 x 12s, glued and screwed or extreme loads or spans will call for engineered wood beams or even steel "I" beams with pipe columns.
A joist is a beam, a supporting structure in a building. The roof joist was riddled with dry rot and had to be replaced.
Nails. If they cannot be placed on top of a wall or beam a joist hanger is required as well.
girder is the main horizontal beam . the joists which are usually smaller, are connected to the girders and are supported by the girder.
Trimmer
joist
joist
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beam transfer loads from the joist to the wall or column where it supports..
"Rolled Steel joist", often referred to as an "I Beam" A metal beam used in constriction of buildings.
A joist, either floor or ceiling are the boards that go across the building and tie the walls together. A timber joist would be a rough sawn beam. Basically a tree that has been squared up.
A beam will be placed horizontally, a column will be placed vertically.
A beam will be placed horizontally, a column will be placed vertically.