how to add material weight/density

[SamB2R2F]

How do i add material weight/density into the program so i can work out the overall weight of a wall frame.

For the life of me i cant figure it out. 

I need to add this - WOODFIBRE INSULATION 50KG/m3

Many thanks

[Patchy]

This may help:

https://forums.autodesk.com/t5/autocad-forum/assigning-material-amp-mass-for-the-object/td-p/8408049

[AVCPlugins]

AutoCAD objects have a Material property. However, this material only provides texture for rendering, but it has no density. Therefore, the MassProp command and the DataExtraction command always assume that the density is 1, no matter what material you assign. This problem can only be solved with plugins. A cheap plug-in AVC Properties Palette adds density, price and a number of other properties to materials. If you assign such materials to your solids or layers of your solids, then the DataTable or Sawing Table plugin will be able to extract the weight and price data for each of your parts and assemblies as a whole. And the Material Table plugin will extract the total data on the amount of materials needed to manufacture the entire product.

[SoaresASBCAD]

https://www.youtube.com/watch?v=DnbvxiBD5ow

[leeminardi]

Here's a simple AutoLISP program that given the density will output the volume and weight of a single solid object.

(defun c:weight	(/ den v w)
; Given a density, calculate volume and weight of a solid.  
  (setq	den (getreal "\nEnter density.")
	v 	(vla-get-volume (vlax-ename->vla-object (car (entsel))))
    	w   (* v den)
  )
(alert (strcat "volume = " (vl-princ-to-string v)
	       "\nweight = " (vl-princ-to-string w)
       )
)
(princ)
)

[JoseMandirigma]

Use massprop command, copy the volume and multiply it with its density. I'm using millimeter so when I'm taking the volume the software will provide a millimeter cube of volume. Convert it to meter cube and multiply it by the density of material you are using. For Steel Density 7850 kg/m3, Aluminum 2700 kg/m3, and for other materials density, just ask google 😄