Thread: Stair and roof calculator

Originally Posted by duckman

Now if Blocklayer would be so kind as to tell this chippy what he means by " Birdsmouth seat width" I'll be a happy camper.

Cheers,

Mark.

I would hazarard a guess that would be the width of the birdsmouth sitting on the top plate of the wall. If you don't know what the birdsmouth is that is the notch in the rafter that sits on the top of the top plate.

This only applies to a full cut roof because trusses don't have a birdsmouth as such.

Originally Posted by Barry_White

I would hazarard a guess that would be the width of the birdsmouth sitting on the top plate of the wall. If you don't know what the birdsmouth is that is the notch in the rafter that sits on the top of the top plate.

This only applies to a full cut roof because trusses don't have a birdsmouth as such.

If that's the case then that's what we carpenters call the foot cut. The vertical cut being the plumb cut. The length or more correctly the depth of the birds mouth is what we're interested in, the length of the foot cut is a function of the pitch and the sectional size of the timber and as such there is no need to calculate it. It is, whatever it finishes up being.

duckman

You must remember he is a blocklayer but considering that he had done some excellent work with his programs.

The problem is in the building trade terms of things can change from city to country, state to state as well as from country to country.

e.g. NSW, Astrigals, some other states they are down pipe straps Nozzles are called pops etc.

Originally Posted by Barry_White

duckman

You must remember he is a blocklayer but considering that he had done som excellent work with his programs.

The problem is in the building trade terms of things can change from city to country, state to state as well as from country to country.

e.g. NSW, Astrigals, some other states they are down pipe straps Nozzles are called pops etc.

I don't have to remember anything and I don't appreciate your condescending tone.
Blocklayer has a nice programming exercise going for him but he is reinventing the wheel. If that's how he wants to spend some of his time, good luck to him.



Have a nice day.

Originally Posted by duckman

I don't have to remember anything and I don't appreciate your condescending tone.
Blocklayer has a nice programming exercise going for him but he is reinventing the wheel. If that's how he wants to spend some of his time, good luck to him.



Have a nice day.

I'm sorry duckman if I touched a raw nerve. I never meant to be condecending if you wanted to take it that way. Like I said trade terms vary and it doesn't make any one right or wrong it is just the way others have learnt them and it was just my way of answering a question you asked and I'm sorry if it upset you so much. But I'm afraid sometimes that's life

Don't worry Barry, ducks always get snappy if you stir 'em up!

Blocklayer, I took the aptitude test and only got 18 right, how do I improve so I can become a qualified blockie?

Just wanted to thank you for this simple and easy to use program

THANKS

GMC

Great Program. I've used it a lot.

Very occasionally, in the roof calculator, it seems to make common rafters about 10mm too short. I haven't narrowed down exactly where, though.

ok! not sure if this is any use but will calculate pitch for stairs to finish at floor level rather than butting into the trimmer. it is designed for wood stairs. any comments please forward. Pitch Calculators.