T - U

Tempera

painting technique using powdered pigments.

Tie beam

the horizontal transverse beam in a roof, tying together the feet of the rafters to counteract the thrust.

Tierceron

additional rib in an arch which does not join the main arch keystone; exists in Gothic and Renaissance styles

Torus

a convex molding that is a semi-circle or semi-ellipse.

Transept

the part of a cruciform church with an axis that crosses the main axis at right angles.

transept crossing

the area where the nave and choir intercept with the transepts.

Transition ( style)

style of the period marking the end of the Roman era and the beginnings of Gothic art.

Transverse vault

barrel arch perpendicular to the building axis.

Triangular arch

pointed arch formed by two segments of a circle intersecting one another at a certain angle.

Triangular vault

triangular arch-shaped vault.

Tribune

vaulted gallery above the aisles or the narthex with arched mouldings that open on to the nave.

Triforium

a narrow passage in the thickness of the wall with arches opening onto the nave.

Turret

A small, skinny tower usually at the corner of a building.

Tympanum

the section atop the Lintel of a portal or doorway, enclosed by an arch, often featuring significant sculpture work.