What is chipboard?
Chipboard (particleboard) is a panel of wood particles bonded with resin. Grades P1 to P7 under EN 312 define whether it is load-bearing and moisture resistant.
What is a Sovent fitting?
A Sovent fitting is a special branch fitting in the discharge stack of a high-rise building that guides the flows so a separate vent stack is often not needed.
What is a cone penetration test report?
A CPT report plots cone resistance, sleeve friction and friction ratio against depth, showing the soil layers and where a load-bearing sand layer starts.
What is a cone penetration test?
A cone penetration test (CPT) pushes an instrumented cone into the ground to log soil layers and strength. How it works, what the plot shows and practical tips.
What is solid surface?
Solid surface is a through-coloured material of acrylic resin and alumina trihydrate that can be joined seamlessly into worktops and basins. Properties and tips.
What is soldering?
Soldering joins metals with a filler alloy that melts below the parts themselves. Soft soldering versus brazing, uses in leadwork, zinc and copper pipe, and tips.
What is a countersink bit?
A countersink bit cuts a cone-shaped recess so a countersunk screw head sits flush. Types, the 90 and 82 degree angles, how to use one and common mistakes.
What is an ornamental fanlight?
An ornamental fanlight (Dutch: snijraam) is a window above a door richly decorated with wood carving. Features, where you find them and repair tips.
What are intersecting arches?
Intersecting arches spring from alternate columns or piers and cross each other, forming pointed shapes. Features, origins, examples and practical tips.
What is a smuiger (Zaan hooded fireplace)?
A smuiger is a wide, deep hooded fireplace from the Dutch Zaan region, usually lined with Bible tiles. Its parts, purpose and tips for care and restoration.