[GreenYes] Re: converting yards to tons for construction waste recycling purposes

["Amy Bauman" <abauman@no.address>]

Hi Christi -

I only have numbers for building materials ... someone else might supply
densities for various kinds of MSW

Concrete (loose) 1,855 lb/yd3 ... but does it have rebar?  This affects the
number, obviously
Concrete block 2,700 lb/yd3
Steel 12,231 lb/yd3 ... but you didn't specify which metal
Cardboard 689 kg/m3

Just for fun, I left the last one in metric.  If you divide this by 16.02,
you'll be left with lb/ft3 ... and then mult by 27 ft3 for a yd3.

Best of luck with the project.

Regards,

Amy Bauman
greenGoat
www.greenGoat.org
(we help people recycle demo debris too)

-----Original Message-----
From: GreenYes@no.address [mailto:GreenYes@no.address]On
Behalf Of christi
Sent: Wednesday, January 18, 2006 5:26 PM
To: GreenYes
Subject: [GreenYes] converting yards to tons for construction waste
recycling purposes



I work for a group that manages the recycling of construction and
demolition waste.  As part of our service, we provide monthly reports
to the client and contractor that includes counts in tons of how much
waste has been recycled (concrete, metal, etc.).  For one of our
projects we have run into a problem.  Many non-trash items are being
reported by the waste management company in cubic yards rather than
tons.  They do not weigh the material because there is no fee
associated with recycling it.  My question follows:

Does anybody have a reliable way for estimating tons based on a given
yardage for the following:

concrete
commingled cans and bottles
commingled cardboard, newspaper, paper,
cardboard (alone)
metal

Help on any of the above categories would be appreciated.  Thankyou.