Hip angle formula
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2007-02-27 02:36 AM
2007-02-27
02:36 AM
for any given roof of pitch "roof_ang" what is the formula for calculating the angle of an element placed oblique the fall line of the roof ("obj_ang")
eg at the hip - "obj_ang" would be 45. (if roof pitches are equal)
thanks
Cheers John
John Hyland : ARINA : www.arina.biz
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John Hyland : ARINA : www.arina.biz
User ver 4 to 12 - Jumped to v22 - so many options and settings!!!
OSX 10.15.6 [Catalina] : Archicad 22 : 15" MacBook Pro 2019 [/size]
6 REPLIES 6
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2007-02-27 03:19 AM
2007-02-27
03:19 AM
Aussie wrote:I'm no guru, John, but is this what you want?
/....
for any given roof of pitch "roof_ang" what is the formula for calculating the angle of an element placed oblique the fall line of the roof ("obj_ang")
eg at the hip - "obj_ang" would be 45. (if roof pitches are equal)
If so the maths is in the part here.
Rod Jurich
AC4.55 - AC14 INT (4204) | | OBJECTiVE |
AC4.55 - AC14 INT (4204) | | OBJECTiVE |
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2007-02-27 08:39 AM
2007-02-27
08:39 AM
Rod wrote:Rod- Ill have a closer look at your library part. What i am hoping to do is be able to place a capping as a roof accessory and by varying the 2d angle in plan get an automatic correction the the inclined angle.
I'm no guru, John, but is this what you want?
If so the maths is in the part here.
Cheers John
John Hyland : ARINA : www.arina.biz
User ver 4 to 12 - Jumped to v22 - so many options and settings!!!
OSX 10.15.6 [Catalina] : Archicad 22 : 15" MacBook Pro 2019 [/size]
John Hyland : ARINA : www.arina.biz
User ver 4 to 12 - Jumped to v22 - so many options and settings!!!
OSX 10.15.6 [Catalina] : Archicad 22 : 15" MacBook Pro 2019 [/size]
Anonymous
Not applicable
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2007-02-28 06:31 PM
2007-02-28
06:31 PM
Aussie wrote:I don't know if it helps but I find it much quicker to cut a section through and measure the angle rather than getting into maths. Let the computer do the maths - that's what it's for!
heres a q for the maths gurus.
for any given roof of pitch "roof_ang" what is the formula for calculating the angle of an element placed oblique the fall line of the roof ("obj_ang")
eg at the hip - "obj_ang" would be 45. (if roof pitches are equal)
thanks
If you need the formula for scripting an object for instance then I'm sorry - this advice is useless!
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2007-02-28 10:51 PM
2007-02-28
10:51 PM
I think I have worked it out.
angle of hip =ATN(tan(AC_pitch)*cos(angleofobject))
for a normal hip angleofobject is 45
and AC_pitch is the angle of roof to which the accessory is applied
angle of hip =ATN(tan(AC_pitch)*cos(angleofobject))
for a normal hip angleofobject is 45
and AC_pitch is the angle of roof to which the accessory is applied
Cheers John
John Hyland : ARINA : www.arina.biz
User ver 4 to 12 - Jumped to v22 - so many options and settings!!!
OSX 10.15.6 [Catalina] : Archicad 22 : 15" MacBook Pro 2019 [/size]
John Hyland : ARINA : www.arina.biz
User ver 4 to 12 - Jumped to v22 - so many options and settings!!!
OSX 10.15.6 [Catalina] : Archicad 22 : 15" MacBook Pro 2019 [/size]
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2007-03-01 01:27 PM
2007-03-01
01:27 PM
In terms of carpentry, the hip slope is always (pitch)/18 when the main pitch is expressed in (pitch)/12.
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Anonymous
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2007-03-01 04:53 PM
2007-03-01
04:53 PM
gpowless wrote:Thats not correct, its 17 not 18. For example, a 4"/12" roof pitch has a 4"/17" hip/valley pitch.
In terms of carpentry, the hip slope is always (pitch)/18 when the main pitch is expressed in (pitch)/12.
But here is a good cheater calculator. http://www.ls.net/~windyhill/Calcs/hipbackangle3.htm
Jim