Joists

Joists: Horizontal framing members of a floor or ceiling frame. Keystone: The central, topmost stone of an arch. It locks in the voussoirs before the centering scaffolding can be removed.

Trimmer - Two joists or rafters spiked together and run parallel to joists or roof rafters to supply needed support to a floor, ceiling or roof opening. Truss - A framework for supporting a roof.

Projecting floor joists in a timber-framed building, supporting an overhang. Joggling The method of cutting the adjoining faces of the voussoirs of an arch with rebated, zigzagged, or wavy surfaces to provide a better key.

Ceilings are now usually formed of plaster, but in former times they were commonly either boarded (of which St Albans cathedral is perhaps the earliest example), or showed the beams and joists, ...

While they can increase the resistance of timber to splitting, they can seriously effect the bending strength of joists, floorboards etc. Ray - a fissue radiating from the centre of the heartwood outwards, In which protein is stored.

It is a structural element and usually is attached at the sub floor or the floor joists. Most of the time, the manufacturer matches the turnings of the baluster to the turnings of the newel.

Tail-bay - A tail-bay is one of the joists which rest one end on the wall and the other on a girder; also, the space between a wall and the nearest girder of a floor. ©2007 The Probert Encyclopaedia. Data used under license.

Bridging is small wood or metal members that are inserted in a diagonal position between the floor joists acting both as tension and compression members for the purpose of bracing the joists and spreading the action of the effect of loads. Buttress ...

A steel strap screwed to the end of every second or third common joist and built into the brickwork to ensure that the joists give lateral support to the wall. It is fixed to the same joists as the strap anchors. Wall covering ...

9. (Transport / Nautical Terms) any of the transverse stiffening timbers or joists forming the frame of a ship's hull 10. (Life Sciences & Allied Applications / Botany) any of the larger veins of a leaf ...

a ceiling beam on the diagonal into which are housed the ends of the joists that form jetties on two adjacent fronts of a building. Dutch Gable a scalloped gable of Dutch origin.

balloon frame - introduced in the 1830s, a system of framing a building in which wood studs extend in one piece from the top of the foundation sill-plate to the top roof plate; floor joists are nailed to the studs and are supported by horizontal ...

They were indistinguishable from custom built houses, except for the "Sears" or "Aladdin" trademarks stamped on rafters or joists. The advantages of pre-cut homes were that they were much quicker to construct and also less expensive to purchase.

Bridging Solid - Wooden blocks used to separate floor joists beneath partition walls.

pergola A covered walk in a garden, usually formed by a double row of posts or pillars with joists above and covered by climbing plants.

Hard and brittle, cast in a mould to the required shape. Wrought iron is ductile, strong in tension, forged into decorative patterns or forged and rolled into e.g. bars, joists, boiler plates; mild steel is its modern equivalent, similar but stronger.

Joist A timber or steel beam directly supporting a floor and sometimes altenratively or additionally supporting a ceiling. Steel beams are usually referred to as RSJs (rolled steel joists).

In balloon framing, mass-produced nails joined standardized studs, joists, and rafters. Naysayers gave the method its derisive name because it seemed so ridiculously light that it would surely blow away.

See also: Joist, Floor, Timber, House, Architecture