To some of the more learned members of this forum.

[Kev Stephenson]

Double checked and the calc is

 

weight x (100+final moisture content% / 100+initial moisture content%)

[Kev Stephenson]

The 100 is needed as it is not a true percentage in mathmatical terms but a ratio of wood to moisture expressed as a percentage. The 100 is the amount of wood present which doesn't change.

[Rupe]

Thats close enough for me!

 

I was thinking my calc wouldn't work in this situaition too! And my head hurt even more!

[Dean Lofthouse]

The 100 is the amount of wood present which doesn't change.

 

Spot on

[Rupe]

Double checked and the calc is

 

weight x (100+final moisture content% / 100+initial moisture content%)

 

 

mine was weight x (100-original content/ 100-final content)

[Rupe]

Does it cahnge the other way if the moisture content is over 100% or am I missing something?

[Kev Stephenson]

Does it cahnge the other way if the moisture content is over 100% or am I missing something?

 

Your calculation doesn't take into account the weight of the wood. The 100 in your calc is just changing from % water content to % wood content which is incorrect as it isn't a true % it is a ratio %. Try your calc with 200% moisture, it doesn't work.

 

To the OP, forget that customer or have it in writing that the weight is at time of sale, if the customer keeps the logs inside for any length of time the weight of the bag may fall below the sale weight. It is never a good idea to sell logs by weight.

[Rupe]

The OP fell asleep a long time ago or wished he hadn't asked!!

 

SO the original answer is 8x111/132 = 6.72kgs which is a new different answer but I think you''ve cracked it!

[Mozza]

Why not just wait til its at 11%, then weigh it again??

[ukminch]

Does the username paper rustler mean bean counter, and accordingly the confusion caused?