CALC: Assorted Design Calculators from Don_P

Started by MountainDon, February 13, 2011, 08:27:52 PM

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MountainDon

This used to be a topic on the rafter thrust calculator only. I have redone this as the portal link to his assortment of online calculators.

They may be accessed from his index page HERE.

I have found several to be valuable tools when designing or modifying a design.

Just because something has been done and has not failed, doesn't mean it is good design.

MountainDon

Some of the calculators require an inpit for roof pitch. Pitch is usually expressed something like 12/12, 6/12. etc. When asked to enter roof pitch the description field will be something  like...  Pitch of Rafter (e.g. 6/12)   Enter only the part ii Red like 6  in 6/12.   (the numerator is one views 6/12 as a fration)
Just because something has been done and has not failed, doesn't mean it is good design.


MountainDon

In the Rafter Tie Connection Thrust Calculator results field "Tension in midjoint of ceiling joists (lbs)" the calculated result can be interpreted as the amount of force that would be pushing horizontally outwards on the wall at each rafter tail, if the rafter tail was not restrained by a rafter tie. at the position where the rafter, rafter tie and wall top plate meet.
Just because something has been done and has not failed, doesn't mean it is good design.

Don_P

#3
My website above was hacked by a squatter. I've begun putting the calcs on a new website;
http://theownerbuiltcabin.com/