Great video. I am actually sitting the Vertical exam tomorrow and Lateral on Friday. One thing - I just did this problem and your answer is correct, but you will get a different number if you use the equation instead of reading off the graph. You got 3.5 from reading the graph and multiplying by Is^0.5, but you get 3.85 from using the equation and multiplying by Is^0.5. The errata that corrects the answer from 3.5 to 3.85 is on the NCEES website.
Fun fact, some states haven’t adapted to the new code until recently. Idaho for example, in 2021, adapted the 2018 IBC/IRC building code and ASCE7-16 also. We used 7-10 and 2015 for the longest time.
Jefferey great comment! This is SO true and I should have mentioned this. Im doing a video right now talking about codes and provisions, and YES - it all depends on what the local jurisdiction has adopted for code compliance. Hope everything has been going great with you! keep supplying that much wanted input on the channel!
I like how you work through the problem in this easy to follow method, but I have a correction/clarification for "hc" -- it's *not* the difference in height between the lower roof and upper roof, rather it's the height from top of balanced snow load to the upper roof. Bottom of hc is at the same level as the bottom of hd. That can make a big difference in the calculations, depending upon the magnitude of the balanced snow load compared to the step in roof height. Per both ASCE 7-16 and 7-22: "hc = clear height from top of balanced snow load to (1) closest point on adjacent upper roof, (2) top of parapet, or (3) top of a projection on the roof, in ft (m)."
hello, how should the snow load be calculated on multi span roofs? I couldn't find anything about it in asce7-16. Should it be calculated by the Sawtooth Roof division?
Great video. I am actually sitting the Vertical exam tomorrow and Lateral on Friday. One thing - I just did this problem and your answer is correct, but you will get a different number if you use the equation instead of reading off the graph. You got 3.5 from reading the graph and multiplying by Is^0.5, but you get 3.85 from using the equation and multiplying by Is^0.5. The errata that corrects the answer from 3.5 to 3.85 is on the NCEES website.
Fun fact, some states haven’t adapted to the new code until recently. Idaho for example, in 2021, adapted the 2018 IBC/IRC building code and ASCE7-16 also. We used 7-10 and 2015 for the longest time.
Jefferey great comment! This is SO true and I should have mentioned this. Im doing a video right now talking about codes and provisions, and YES - it all depends on what the local jurisdiction has adopted for code compliance. Hope everything has been going great with you! keep supplying that much wanted input on the channel!
Love this video. Your enthusiasm is awesome. Can't wait to see more.
its all about making work and studying fun Aldoogie - and that's exactly what we do here!
I like how you work through the problem in this easy to follow method, but I have a correction/clarification for "hc" -- it's *not* the difference in height between the lower roof and upper roof, rather it's the height from top of balanced snow load to the upper roof. Bottom of hc is at the same level as the bottom of hd. That can make a big difference in the calculations, depending upon the magnitude of the balanced snow load compared to the step in roof height.
Per both ASCE 7-16 and 7-22: "hc = clear height from top of balanced snow load to (1) closest point on adjacent upper roof, (2) top of parapet, or (3) top of a projection on the roof, in ft (m)."
Thank you.
hello, how should the snow load be calculated on multi span roofs? I couldn't find anything about it in asce7-16. Should it be calculated by the Sawtooth Roof division?
Hi Rich. Nice video. Wasn't it supposed to be 60% of the length of the lower roof level and not 65%?