Tarmac 3

[010185]

I have been searching for the unit weight of tarmac on the interent for a bridge design, but couldn't find any references. DOes anyone have any information on the topic

 

[SlideRuleEra]

"Tarmac" is not a material, but a company based in the UK that produces asphalt (and many other products). Here is a link

http://www.tarmac.co.uk/index.htm

The word "Tarmac" is often used to mean (generic) asphalt.

However is you need the properties of a specific Tarmac product, best to contact a company representative.

http://www.SlideRuleEra.net

 

[jimbo]

I am pleased to hear an intelligent definition.

"Tarmac" is flippantly used to denote any area of an airport, which is not a runway. (US)
jimbo



Buy a dictionary, keep it nearby and USE it. Webster's New World Dictionary of American English is recommended, and Webster's Collegiate Dictionary.

 

[Zambo]

Just finished a bridge with 75mm thick asphaltic concrete surfacing. The density measured in the lab averages 2.12T/m3. For superimposed deadloads the code you're working to may require addition of a factor (20-25%). This may also be the case for all SDL - kerbs, median etc.

As SlideRuleEra suggests a supplier of bitumenous materials will give you densitys of all the products which he supplies.

 

[LCruiser]

"Tarmac" is actually a contraction of the term "Tar-MacAdam" - named after the man who made interlocking crushed rock roads popular.

http://www.google.com/search?hl=en&lr=&q="john+macadam"

 

[rconner]

[For any interested I believe Mr. Zambo's recent "average lab density" equates to about 132 lb/ft3, if I understood his metric units correctly].

 

[RDK]

and a tarmac road is also called a macadam road in some areas.

Rick Kitson MBA P.Eng

Construction Project Management
From conception to completion

http://www.kitsonengineering.com

 

[Ussuri]

or alternatively a Bitmac Road.