What is a tension rod (tie rod)?

A tension rod or tie rod is a slender bar that resists tensile forces and holds building parts together. Uses in roofs, churches and steelwork, plus practical tips.

What is a tension pile?

A tension pile is a foundation pile loaded in tension rather than compression, for example to stop basements and tunnels from floating. Types and uses.

What is V-funnel flow time?

V-funnel flow time is the time fresh concrete takes to flow out of a standard V-shaped funnel: a measure of the viscosity of self-compacting concrete.

What is travertine?

Travertine is a porous limestone deposited by spring water. Origin, its characteristic holes, uses, finishes and care tips for floors and facades.

What is a traverse?

In construction a traverse is a cross-member or cross-beam, such as a lifting beam under a crane hook, but also an earthwork in fortifications. All meanings explained.

What is a bay in architecture?

A bay is the section of a building between two successive supports such as columns, piers or frames. Explained with examples from churches and modern buildings.

What is trass?

Trass is finely ground volcanic tuff that turns lime mortar into a water-resistant hydraulic mortar. Origin, how it works and where it is used.

What is a stair handrail?

A handrail is the rail along a stair that you hold on to. Difference from a balustrade, regulations and tips for a safe, solid installation.

What is a trapezoid window?

A trapezoid window has two parallel sides and a sloping top or side, often in a gable under the roof slope. Where it is used and what to watch for.