- Project plans
- Project activities
- Legislation and standards
- Industry context
Last edited 24 Jul 2020
The second edition of The Dictionary of Urbanism by Rob Cowan, published in 2020, suggests that tarmac can mean:
- ‘A generic name for asphalt surfaces.’
- ‘A patented type of road-surfacing material composed mainly of compacted tar and aggregate. The word is a shortening of tarmacadam, a word combining tar- with the name of the engineer and road-builder John McAdam (1756–1836), who invented a process for building roads with a smooth, hard surface (macadam).’
It suggests that macadam can refer to:
- ‘A type of road construction with a smooth, hard surface, in which layers of compacted, crushed stone are bound with stone dust . It was pioneered by the engineer and road-builder John McAdam (1756–1836).’ Also referred to as stone macadam.
- ‘A similar type of road construction but with the addition of tar as a binder.’ Also referred to as bitumen macadam (bitmac).
 Related articles on Designing Buildings Wiki
- Bituminous mixing and laying plant.
- Britain's historic paving.
- Coal holes, pavement lights, kerbs and utilities and wood-block paving.
- Glossary of paving terms.
- Code of Practice for Ironwork Systems Installation and Refurbishment.
- Hazard warning surfaces.
- Highway drainage.
- How to lay block paving.
- Permeable pavements.
- Pervious bitmac.
- Road paving.
- Types of road and street.
Featured articles and news
Urgent need for open communication to address mental health issues.
Guidance offered on COVID-19 green recovery, building safety and more.
Providing strength and support above the joists.
Enforcer will test and investigate product safety.
Underfloor air conditioning comes to 24 St James's Square.
Consultation on public right to buy unused public property.
IHBC resource offers improved consistency.
New laws to ‘retain and explain’ historic statues.
The principles and art of the possible. Book review.
From horse and cart to hypermarket.
How elements and processes work together in a systems approach.
CIOB offers digital guide to proactive methods of working.