Hi, my neighbour and I are planning a joint extension. My architect has drawn plans with a 15 degree pitched roof on a 3m extension, my neighbour and I are wanting a 17.5 degree pitch but the architect says it's not possible. We have accurately measured the critical dimension between the ground floor level and the underside of the first floor bedroom sill, and this is 3510mm. Is there an easy way to establish that a 17.5 degree pitch would work with this height?
Fivescore
Dec 7, 16 12:56 pm
Yes, there's an easy way: draw an accurate diagrammatic section. Don't know how? Hire an architect.
geezertect
Dec 7, 16 1:09 pm
A homeowner who acts as his own architect has an idiot for a client. This is a simple problem of geometry. Have your architect show you his math and thought process.
.51 / 3=17% which is max to bottom of sill...obviously can't go right to the bottom of sill...not sure I'm understanding the question 100% though...
x-jla
Dec 7, 16 2:13 pm
He is giving 60mm of clearance.
x-jla
Dec 7, 16 2:19 pm
.45 / 3 = 15%
x-jla
Dec 7, 16 2:33 pm
I'll stop fucking around now...
JonathanLivingston
Dec 7, 16 2:41 pm
Probably leaving some room to properly flash and finish the window. there are other details you are not thinking through that your architect is. You don't know what you don't know.
x-jla
Dec 7, 16 3:10 pm
Answer = cannot be determined without more details
Hi, my neighbour and I are planning a joint extension. My architect has drawn plans with a 15 degree pitched roof on a 3m extension, my neighbour and I are wanting a 17.5 degree pitch but the architect says it's not possible. We have accurately measured the critical dimension between the ground floor level and the underside of the first floor bedroom sill, and this is 3510mm. Is there an easy way to establish that a 17.5 degree pitch would work with this height?
Yes, there's an easy way: draw an accurate diagrammatic section. Don't know how? Hire an architect.
A homeowner who acts as his own architect has an idiot for a client. This is a simple problem of geometry. Have your architect show you his math and thought process.
Doesn't trust his architect
Asks for random advice on archinect
Architect says 17.5 pitch can't be done
Becomes architect and proves him right
https://youtu.be/0UM5xzerIC0
and the answer is no, it doesn't work
Architect says 17.5 pitch can't be done
Does some math and proves him wrong
what about 17.4?
.51 / 3=17% which is max to bottom of sill...obviously can't go right to the bottom of sill...not sure I'm understanding the question 100% though...
He is giving 60mm of clearance.
.45 / 3 = 15%
I'll stop fucking around now...
Probably leaving some room to properly flash and finish the window. there are other details you are not thinking through that your architect is. You don't know what you don't know.
Answer = cannot be determined without more details
degrees not percent
http://www.cleavebooks.co.uk/scol/calrtri.htm
Zoning only allows a certain height without a variance. 17.5 too high.