SAP 2009 Table H2 - Which Row?

[T0M0]

Hi All,

I have been using the horizontal row of table H2 for roofs <30 degrees. Discovered recently that I should be using the 30 degrees row for angles approaching it. I cannot find any conclusive advice as to what to use.

Which row should be used for <30 degrees?

Any help appreciated and thanks for reading.

T0M0

 

[JD6400]

Most of ours are on Ag barns so are around 12-15 degree we always give Horizontal and 30 degree , then explain in reality its somewhere in the middle !
Can not see what else to do really ?

 

[T0M0]

Most of ours are on Ag barns so are around 12-15 degree we always give Horizontal and 30 degree , then explain in reality its somewhere in the middle !
Can not see what else to do really ?

That is a great approach - thank you for the prompt response - much appreciated.

 

[Ramjam]

You shouldn't be using SAP 2009, the MCS documentation is quite clear SAP 2005 !

 

[JD6400]

Yes sorry , just reread thread title and Ramjam is correct we run to 2005 not 2009 .

 

[Ramjam]

I find the SAP calc so blunt and inaccurate that I put the all the selections upon which the estimate is based on the benefit calc for them to see. Then I explain how bad it is but that I'm obliged to give them that estimate and that in our location they will outperform it by about 15% which is the figure that after much testing SAP against PVGIS I seem to always come to.