Architectural and Engineering Glossary

F

Formeret,wall Rib

One of the ribs against the walls in a ceiling vaulted with ribs.
 

Formica

A proprietary name for a durable sheet of tough laminated plastic.

Forming

A process of shaping metal by mechanical action other than machining,forging,or casting.

Formwork

A temporary construction to contain wet concrete in the required shape while it is cast and setting.

Fornix

In ancient Roman construction,a vaulted surface.

Forstner Bit

A bit used for drilling blind holes in wood.

Foss

A moat or ditch.

Fosse

A ditch that serves as a barrier against an enemy.

Fossil Resin

Naturally occurring hard resins such as copal and amber,which are mined and purified for use in varnishes.

Foul Drain

See soil drain.

Foul Sewer

See soil drain.

Foul Water

A combination of waste and soil water.

Foundation Planting

Plants massed close to the foundation of a structure.

Foundation Wall

That part of the foundation for a building which forms the permanent retaining wall of the structure below grade.
 

Four Leaved Flower

An ornament used in hollow moldings,resembling a flower with four petals.

Four-centered Arch

An arch whose intrados is struck from four centers.

Foxtail

Same as foxtail wedge. 

Foxtail Saw

Same as dovetail saw.

Foxy Timber

Timber having a reddish cast indicating the onset of decay.

FPRF

On drawings,abbr.for fireproof.

Fps

Abbr.for “feet per second.”

FPT

Abbr.for fan powered terminal.

Fracture Load

See breaking load.

Fracture Toughness

A measure of a member’s ability to absorb energy without fracture.

Frake

Same as limba.

Framing Table

Same as rafter table.

Free Delivery Type Unit

A device which takes in air and discharges it directly to the space to be treated without ductwork or other elements which impose air resistance.

Free Façade

A building’s façade that is not attached to load-bearing columns.

Free Fall

1.The descent of freshly mixed concrete into forms without dropchutes or other means of confinement.2.The distance through which such descent occurs.3.The uncontrolled fall of aggregate.

Frost Heave

The raising of a soil surface due to the accumulation of ice in the underlying soil. 

Frost Line

An imaginary line indicating the depth of frost penetration in the ground.

Fuel Load

The quantity of potential fuel within a building,including its contents and fabric.

Fugitive

Changing in color as a result of lack of permanency in a colored pigment or medium when exposed to air,light,etc.

Fugitive Color

Said of the color of a painted surface that is not colorfast;e.g.color changes can occur with exposure to sunlight,weather,and/or with cleaning.

Full Bond

In masonry,a bond in which all bricks are laid as headers.

Full Coat

A paint film of optimum thickness.

Full Façade Portico

A portico that  extends the full width of a house and its full height.

Full Frame

See braced frame.

Full Glass Door

A door having glass (usually heat-strengthened or tempered) in the entire area between the rails and stiles;may have horizontal muntins dividing the glass area.

Full Gloss

A very high gloss.

Full Header

A brick course consisting entirely of headers.

Full House

A house having rooms symmetrically located on both sides of a chimney;for example,see the illustration under full Cape house.

Full Open Valve

A shutoff valve whose cross section,in the open position,equals at least 85% of the cross sectional area of the connecting pipes. 

Full Penetration Butt Weld

A butt weld between two members in which the depth of the weld is equal to the thickness of the smaller of the two members.
 

Full Size

A drawing at the same size as the object shown.

Full Splice

A splice equal to the full strength of its members.

Full Torching

See torching.

Full-centered

Applied to an architectural feature the outline of which follows an arc of a circle.

Full-flush Door

A door of hollow-metal construction,formed from two sheets of steel.The top and bottom of the door may be either flush or closed by end channels;seams are visible on door edge only.

Full-height Porch

A roofed porch,on the front of a house,that extends the full height of the house but not necessarily the full width.