What is a beam angle?
The beam angle is the spread, in degrees, of the light from a lamp or spotlight: the wider the angle, the broader and softer the pool of light.
What is thermal radiation?
Thermal radiation is heat transfer by electromagnetic waves, mainly infrared; every material emits it, depending on its surface temperature and emissivity.
What is a street profile?
A street profile is a vertical section through a street from building front to building front, showing footways, parking, trees and carriageway.
What is street level?
Street level is the height of the public road in front of a plot, tied to a national datum and often the reference for floor level and building height.
What is street furniture?
Street furniture means the objects in the street, mostly on the footway, that are not part of the road itself: benches, lamp columns, bins, cycle stands.
What is a paving hammer?
A paving hammer is the paver’s hammer: the flat face taps blocks and setts into their bedding, the sharp edge splits stone to size.
What is a cast-in-situ pile?
A cast-in-situ pile is a foundation pile formed in the ground on site by creating a void, placing reinforcement and pouring concrete, rather than driving a precast pile.
What is a stair riser?
A stair riser is the vertical board between two treads of a staircase. It closes the stair and stiffens it, and is not the same as the rise, which is a measurement.
What is a flush-fitting door?
A flush-fitting door closes fully within its frame or lining, sitting level with it, unlike a rebated (lipped) door whose lip laps over the frame.
What is steaming timber?
Steaming treats timber with steam to even out colour, prevent fungal staining during processing and make wood pliable for bending and veneer cutting.