What is a canal lock?
A canal lock is a water engineering structure that raises or lowers boats between different water levels. How locking works, gate types and sluices explained.
What is a slop hopper?
A slop hopper (sluice sink) is a flushing disposal sink with a bucket grating, used in hospitals and care homes to dispose of body waste and dirty water.
What is a slof?
A slof is a Dutch term for a short timber laid across several floor joists to spread the load of a post or brace. The nearest English terms: sole plate, spreader.
What is a slotted hole?
A slotted hole is an elongated hole that lets a bolt or screw move, so fixings can absorb site tolerances and thermal or moisture movement.
What is a bridle joint?
A bridle joint is an open wood joint in which a tenon fits into an open-ended slot, giving three or more glued faces. How it differs from mortise and tenon.
What is a wear layer?
A wear layer is the top layer that protects a floor, deck or road from abrasion and slipping. AC ratings, vinyl wear layer thickness and resin floors explained.
What is a flap disc?
A flap disc is an abrasive disc for an angle grinder with overlapping abrasive flaps arranged like a fan. Grits, shapes, uses and safety explained.
What is a sliet?
Sliet is a Dutch term for a roughly debarked timber pole, plank or short pile, historically used in foundations on soft ground and as loose loft flooring.
What is sludge?
Sludge is the wet, fine bottom sediment of clay, silt and organic matter in ditches, ponds and gullies. What it is and how to deal with it on site.
What is a sleutelstuk?
A sleutelstuk is a Dutch historic timber bracket under a beam end, carried by a brace and a wall post. Closest English terms: timber corbel or bolster.