Air conditioning as heating cheaper than gas: is it true and when?
Yes, a split air con heats with a COP of 3-4, often cheaper than gas. Do the maths: cost per kWh of heat, the break-even point and when it does NOT pay off.
Building a Jetty at the Water: Permits, Dimensions and Costs
Building your own jetty? Permits from the council and water authority, hardwood, pile sizes, A4 stainless steel, centre-to-centre spacing and cost per m2. Full guide.
What is post-and-beam construction?
Post-and-beam construction carries load through a few heavy posts and beams. How it works, how it is braced, and how it differs from timber frame.
What is an eaves drip gap?
An eaves drip gap is the narrow space between two adjoining buildings where roof water drips down. Its function, its history and what it means for maintenance.
What is an overlay window sill?
An overlay window sill is fitted over an existing sill without removing it. When to use one, which materials suit and how to fit it properly.
What is a keyhole escutcheon?
A keyhole escutcheon is the plate with a swinging cover that closes off a keyhole. What it does, the versions available and how to fit one.
What is overcurrent?
Overcurrent is a current higher than a circuit is rated for. Causes, the difference from overvoltage, and how circuit breakers protect against it.
What is primer standing time?
Primer standing time is how long a primer may be left exposed to the weather before topcoating. Why it exists, what happens if you exceed it, and what to do.
What is a span?
A span is the distance a structural member bridges between two supports. Why it dominates the design, rules of thumb and deflection limits.
What is excess pore water pressure?
Excess pore water pressure is raised water pressure in the soil caused by rapid loading. How it arises when piling and filling, and why consolidation matters.