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Q: Human weight from footprint depth ( No Answer,   6 Comments )
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 Subject: Human weight from footprint depth Category: Science > Biology Asked by: beckjord-ga List Price: \$10.00 Posted: 19 Apr 2006 00:16 PDT Expires: 19 May 2006 00:16 PDT Question ID: 720479
 ```I seek to find any research that exists on the relationship between how heavy a man is and how deep his feet go down into dirt, sand, gravel, loam,clay,etc.```
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 Subject: Re: Human weight from footprint depth From: probonopublico-ga on 19 Apr 2006 00:53 PDT
 `Would this not also depend on the size of his feet?`
 Subject: Re: Human weight from footprint depth From: myoarin-ga on 19 Apr 2006 04:36 PDT
 ```It would also depend on his gait. If he walked flat-footed - not coming down with his heel first - he would not sink as deep. If he were running, his intertia could increase the depth of his footprint. It is also possible to lessen the depth for a couple of steps when moving quickly by letting inertia carry one forward without putting one's entire weight on those steps. Too many variables, at least at this stage.```
 Subject: Re: Human weight from footprint depth From: probonopublico-ga on 19 Apr 2006 05:22 PDT
 ```Good points, Myo. I would also guess that, weight-for-weight, a foot stomping Irish dancer would create deeper footprints than say Fred Astaire who, as we all know, was so light-footed that he was even able to dance on the ceiling, as he demonstrated in 'Royal Wedding'.```
 Subject: Re: Human weight from footprint depth From: thither-ga on 21 Apr 2006 11:08 PDT
 ```This topic was featured on a recent episode of CBS's Numbers where they used a mathematical formula to estimate a person's height and weight according to footprint depth. I am unsure how much of this was fiction. I would suggest contacting a crime lab if you are really interested as there doesn't seem to be any info on the web regarding this topic. Have a good day.```
 Subject: Re: Human weight from footprint depth From: ponder852-ga on 29 Apr 2006 01:09 PDT
 ```I suggest that because of the many and varied types of surfaces where footprints will be found that you are very unlikely to find a definitive work that is able to say that "If the footprint is this deep then the person is that heavy" for each of the types of surface. There are too many factors. Take sand alone. What type of sand? How compact was the sand? Was the sand dry or damp or wet or saturated? The comments made by probonopublico, myoarin & thither also identify relevant factors. It is my supposition that forensic scientists are most likely to test the soil at the individual scenes of crime on a case by case basis and perhaps apply known weights, etc. to the same soil, measure the results and compare to the footprint in question using, as necessary, the instruments of engineering & science such as soil compaction meters, hydrography meters, etc. I put the two words "footprint" and "forensic" together into google and found many articles and references. Skimming the references shows it is clearly a well developed area of forensic science. Most interest appears to be in both shape of footprint and the patterns of footwear, socks, stockings etc. and Also in the relationship (correlation) between the length, breath, surface area of a foot (and therefore a footprint) to the height and weight a person as these are not dependent on the surface where the footprint is made. There is also clearly links between research in the medical science of podiatry and the forensics of footprints. From google I merely select out the following samples:- http://forensic.to/shoeprint.html A page on the web-site of Zeno Geradts a Dutch forensic scientist. http://www.latrobe.edu.au/podiatry/forensicpod.html This appears to be a course outline for a "Forensic Podiatry" unit at Latrobe University in Australia that includes a brief list of recommended reading One of the books stood out to me merely because of it's title "Robbins, L. M. 1985. Footprints: Collection, Analysis, and Interpretation. Illinois: Charles C. Thomas." http://www.joannabriggs.edu.au/pacesetters/Vol2_Iss1/2_1c_sjones.html Brief biography with quotes aboout Dr Sara Jones "...a podiatrist with a passion for forensic podiatry..." http://www.usc.edu/CSSF/History/2002/Projects/J1003.pdf A abstract titled "Tell Tale Footprints: Determination of Stature from Foot Length in Forensic Cases" Hope this helps :)```
 Subject: Re: Human weight from footprint depth From: probonopublico-ga on 29 Apr 2006 03:14 PDT
 ```Wow, ponder852, you have been doing a lot of pondering. Great Comment! I see that you are a recent inhabitant of this here GA-laxy ... Welcome Aboard!```