Definition of joist in English:

joist

noun

  • A length of timber or steel supporting part of the structure of a building, typically arranged in parallel series to support a floor or ceiling.

    • ‘Reflective systems are typically located between roof rafters, floor joists, or wall studs.’
    • ‘If your attic has metal joists, you may want to place rigid foam insulation between the joists and the ceiling drywall.’
    • ‘Batts are made to fit between the studs in your walls or between the joists of your ceilings or floors.’
    • ‘Kip chose oriented strand board for the subfloors and sheathing, with floor joists made of a similar material.’
    • ‘Use plywood walk boards or wooden planks over the ceiling joists for support.’
    • ‘If you are unable to screw directly into the ceiling joists, the use of toggle bolts is permitted.’
    • ‘These strips, or tracks, are attached to the ceiling joists and support the tiles.’
    • ‘Determine the height of the new ceiling you want and install new ceiling joists from opposite roof joists.’
    • ‘It's ok to nail the upper wall plates into the upper floor joists.’
    • ‘Then toenail the joist through the joist into the girder.’
    • ‘Otherwise, wood furring strips can be nailed to the old ceiling or joists and the new tiles are stapled to these.’
    • ‘There was nothing spectacular about the construction, the walls were brick and the ceiling joists heavy timber.’
    • ‘Otherwise, wood furring strips are first nailed to the old ceiling or joists and the new files are stapled to these.’
    • ‘Ledgers are often placed at the same level as the floor joists of the first floor, and this automatically solves the problem.’
    • ‘Often, reflective insulation materials have flanges that are to be stapled to joists in attics or floors, or to wall studs.’
    • ‘Attach a block to each of the exposed joists where the joist meets the deck board using four 3-in. #8 exterior screws.’
    • ‘Suspended ceilings are hung from the ceiling joists with a metal grid.’
    • ‘The two adjustable arms attach to the ceiling joists to support the fan in the desired location.’
    • ‘Do not step through attic floor joists onto the ceiling of the room below.’
    • ‘Painted metal decking supported by steel joists forms its underside.’
    purlin, girder, spar, support, strut, stay, brace, scantling, batten, transom, lintel, stringer, baulk, board, timber, plank, lath, rafter
    View synonyms

Origin

Late Middle English giste, from Old French, ‘beam supporting a bridge’, based on Latin jacere ‘lie down’.

Pronunciation

joist

/dʒɔɪst/