A-frame building Quick reference
A triangular-shaped building with a steeply sloping roof that extends to ground level.
abacus Quick reference
In classical architecture, the flat uppermost slab at the top of the *capital of a column.
abandonment of work Quick reference
To leave site and refuse to continue work. Must entail a complete stoppage of work with a clear intention not to continue or complete the work. The term is often used in arbitration and adjudication and marks a point where reference to legal proceedings can commence....
abatement of action Quick reference
An interruption of legal proceedings. A party, normally the defendant, serves an application of abatement giving reasons why proceedings should not continue....
aberration Quick reference
A defect in the image produced by an optical or electronic lens system.
abeyance Quick reference
abioseston Quick reference
Non-living particulate matter found floating in watercourses.
abiotic Quick reference
Non-living chemical and physical matter (not biological). Abiotic components are parts of the environment; water, sunlight, oxygen, temperature, soil, and climate....
ablation Quick reference
The removal of material by *erosion, *evaporation, or *chemical reaction. For short-term protection against high temperatures as a form of fire protection or fireproofing of process equipment, sacrificial materials are used such that during a fire there is resistance and protection to the equipment beneath for a sufficient period of time....
ablution fitting Quick reference
A large communal sanitary fitting used to perform ritual washing.
Abney level Quick reference
A hand-held instrument to measure vertical angles. See also
above grade Quick reference
A higher elevation than ground level. See also
above ground level Quick reference
abradant Quick reference
The differently sized grits of hard materials such as emery employed for grinding, polishing, etc. The abrasive grade is determined by the grit size (grit number) originally related to the hole sizes in wire sieves. Higher numbers indicate smaller abrasive particles and hence finer finishes and, in the FEPA (Fédération Européenne des Fabricants de Produits Abrasifs) standards, include number 16 (1.0~1.4 mm) designated ‘coarse’; 46 (0.3~0.4 mm), medium; 90 (0.13~0.18 mm), fine; and 600 (0.008~0.010 mm), very fine....
Abram’s law Quick reference
A rule that states the strength of concrete (or mortar) is inversely related to the water/cement (w/c) ratio. Provided there is sufficient water to ensure that the ...
abrasion Quick reference
The removal of surface material by the scratching action of hard particles, either deliberately (abrasive papers, abrasive cleaning, abrasive machining) or as a consequence of operation (...
abrasion Quick reference
The wearing away of one material against another by *friction.
abrasion resistance Quick reference
The ability of a finish to withstand wear.