What is a portal frame?
A portal frame is a rigid frame of two columns and a rafter with moment-resisting corners. It carries vertical and horizontal load without bracing in its plane.
What is a portal?
A portal is the designed entrance of a building together with its surround — and, in structural engineering, a rigid frame of two columns and a beam.
What is the striking point of an arch?
The striking point is the centre from which the curve of a masonry arch is set out. Where you place it determines the shape of the arch.
What is Poroton?
POROTON is a registered brand of heavily porosified clay blocks made with burnt-out polystyrene beads — light, highly insulating and laid in thin-bed mortar.
What is a poriso brick?
A poriso brick is a solid porous-fired clay brick for internal walls — lighter and better insulating than ordinary solid brick, yet strong enough to carry load.
What is porphyry?
Porphyry is a very hard igneous rock with large crystals set in a fine groundmass. Known from setts, aggregate, track ballast and asphalt surface courses.
What is porous brick?
Porous brick has tiny voids in the clay body itself, which makes it lighter and a far better insulator than a dense solid brick.
How to Build Wooden Garden Steps
Building wooden garden steps for a garden or slope? Rise, going, the step formula, a worked example, materials, foundation and costs. Explained step by step.
How to Make and Fit a Screen Door or Window Screen Yourself
Making a screen door or window screen yourself? Full step-by-step guide with measurements, mesh types, tools, costs and the mistakes to avoid.
What is a lattice girder slab with EPS infill?
A lattice girder slab with EPS infill is a precast composite floor in which polystyrene blocks replace the concrete that does little structurally, cutting weight sharply.