What is a spud pole?
A spud pole is a steel post that a pontoon or dredger drives into the waterbed to hold position. How it works, where it is used, and tips.
What is a spatterdash coat?
A spatterdash coat is a rough mortar coat dashed onto a background so that render, plaster or tiles bond better. How it is applied, with tips.
What is spreidsel?
Spreidsel is thin, quarter-sawn oak laid between the common joists under the floorboards of historic Dutch timber floors. Purpose and tips.
What is a cavity cleat?
A cavity cleat is a timber batten in the cavity that fixes a sub-frame or window frame to both leaves of a cavity wall. How it works and tips.
What is a cavity brush?
A cavity brush is a long round brush placed in a wall cavity to stop blown-in cavity insulation escaping to the neighbours or into a shutter box.
What is a cavity wall tie?
A cavity wall tie connects the outer leaf of a cavity wall to the inner leaf and transfers wind load. Material, numbers and installation tips.
What is a couple roof?
A couple roof is a roof structure of rafters set in pairs, running from ridge to eaves and forming a triangle with the floor. Structure, forces and tips.
What is a rebate?
A rebate is a stepped recess along the edge of a component into or against which another part fits, such as glass in a window frame.
What is splitting a house?
Splitting a house means turning one dwelling into two or more self-contained homes. Physical versus legal splitting and what to check before you start.
What is tensile splitting strength?
Tensile splitting strength is the tensile strength of concrete found by splitting a specimen under a line load. Test, formula (EN 12390-6) and practical use.