Skene's Elements of Yacht Design has a good section on calculating these
loads. I don't know if it's still in print, but you can probably find a used
copy on the web (or try the library).

Tom Dacon

"noexpert" wrote in message
...
Subject: loads on masts


Hello,
need to get some data on load figures on masts for sail boats.
Various pulling forces from forestay, halyards,shrouds , backstays etc
plus
pushing forces from spreaders
act on the mast.
Need some real numbers in lbs for standing rigging as well as under sail
for
variable conditions.

Of course each boat and size have different value ranges.
Have looked into various books but real data are scant.
Can somebody help with links or bits of wisdom? Just assume and make
references to boat length , mast heights etc.
help is much appreciated
thanks mik