Excellent explanation!!! Wish you had more on the topic of structural load analysis like this. Great job!!

Michelle!!!! I don't know if you'll ever see this comment. I've had you sub before in Residential codes and you were fantastic. THis video with our new Structures one instructor is difficult so far. THis video saved my homework life!!!!! Thank you!!!!

Currently learning this calculation for my job. Thank you for the instruction!

PSF means lbs per square foot. The "per" infers division not multiplication. You define uniform load as LBS x sqft. It should be LBS/ sqft

Really like the sketchup model as a visual aid. Great explanation.

This structure load explanation is so clear. Why don't you guys continue to offer such courses?

Excellent explanation. Also, please include another video to explain how to evaluate the roof load on a hip rafter beam which is not uniformly loaded, but rather triangularly loaded in reality.

Great simple illustrations giving the basics. Makes it easy to understand

thanks for the great video with clear explanation

great video...expecting more subject from u ..thanku

This really helped. Thanks a lot!

Great Video! It worths my subscribtion. Thanks

I learned a ton thank you so much.

Thanks, Michelle!

I'm trying to build a screened in porch on top of an existing deck and trying to calculate the linear load on the joist to know if I need to add deck beams. This was helpful but it would be great if it showed the assumed material sizes i.e. 2x6 or 2x8.

love it!!! thank you so much! :)

great video...expecting from subject from u ...

Do you guys have a video of wind uplift and the needed tie-down PSF required?

well explained, thank you

Correction: For the example of the rafters with the ridge beam, (i.e. the one with the three tributary areas), the ridge beam calculation is 8' x 19' = 152 sf and not 104.5 sf, therefore, the ridge load is 152 sf * 40 psf = 6,080 1b. The error here is the introduction of the 104.5 sf tributary width into the ridge calculations. The 104.5 sf tributary width is appropriate for the calculations of the load that is carried by each of the two exterior walls. This is: tributary area = (4' + 1.5') x 19' = 104.5 sf; wall load = 104.5 sf * 40 psf = 4,180 Ib. Total roof load = 4,180 Ib + 6,080 Ib + 4,180 Ib = 14,440 Ib. Just saying to clear up the confusion.

Thanks for the clear explanations. This video is the closest so far to helping me understand how much load my roof can bear. Question: does the number of trusses and studs change the load-bearing quality of the roof?

So if I have a shed roof 12' x 24' long with rafters to a ledger board screwed to a vertical wall, is the ledger considered a supporting ridge carrying 1/2 the shed roof area ( two tributary loads, 6'x24' to ledger and 6'x24' to the beam at the birdsmouth) or is the beam carrying the entire load (one tributary)

I would like to calculate how big a ridge beam has to be. Any tips? Thanks.

Minor correction at 9:50 - 8x19=152, and at 9:54 it should say 152 x 40 = 6,080. I guess that's why teachers always tell us to show our work.

psf or pounds per square foot is equal to load/Area not multiplication

Thank you so much.

very helpful, thanks!

thanks

Thank you so much for this informative video and I would like to learn more. May you help me find more of this video from this channel?

minor correction its 152sf instead of 104.5sf ;)

14,400 lbs: Fourteen Thousand Four Hundred and Forty pounds. Ahhh my alma mater...

If the roof is a shed style with one wall 12 ft and the other wall 8 ft high, Does all of the roof load fall on the lower wall? Or half? Thank you for your help and useful video

I don't get why ridge beam would carry so much more load than the ridge board. In the picture they both have horizontal bracing.

10 people don't like load paths? lol

Anybody else watching this to make sure they’re doing their job correctly? Lol

I didn't understand the purpose of such roof calculation usage in construction.

14400lbs is not 14440lbs which is what you said