Building a deck around an above-ground pool: complete guide
Want to build a deck around your above-ground pool? Full guide with foundation, joist spacing, height, materials and cost per m².
Dividing perennials in autumn: which plants and when?
Which clump-forming perennials can be divided in autumn, when to wait until spring and how to replant healthy divisions.
What does statically determinate mean?
A structure is statically determinate when all support reactions and internal forces can be found from the equilibrium equations alone. Explanation and examples.
What is the stair step formula (2R + G)?
The stair step formula, 2 x rise + 1 x going, shows whether a stair is comfortable to climb. In England, Approved Document K requires 550 to 700 mm.
What is a stacking truss (stapelspant)?
A stacking truss is a truss-like roof frame that exerts no outward thrust on the walls. The Japanese variant forms a pitched roof with a little more usable space.
What is load-bearing masonry construction?
Load-bearing masonry construction (Dutch stapelbouw) stacks bricks or blocks into walls that carry the floors and roof, spreading loads evenly to the foundation.
What is a standvink?
A standvink is a free-standing Dutch intermediate post with braces on both sides that supports a main beam, found mainly in old farmhouses and windmills.
What is a standpipe?
A standpipe is a portable vertical pipe with a tap, and often a meter, hired from the water company and fitted to a hydrant where there is no permanent water supply.
What is a discharge stack?
A discharge stack is the vertical main drain in a building’s above-ground drainage, collecting waste from each floor and vented to open air above the roof.
What is a dihedral angle in roofing?
A dihedral angle is the angle between two planes meeting along a line, such as two roof slopes at a hip or valley. It determines the backing bevel on a hip or valley rafter.