Thanks for this! Question re "joist BACK span" which is confusing me At 1:05, in the "maximum cantilever" portion of Table R507.6, it refers to "joist back span" in feet, in 2' increments, from 4' up to the number that is just below the max. "allowable joist span." What is a a "joist BACK span?" It's not defined. Is that the actual ledger-to-beam distance for your joists? If so, isn't that what "joist span" already means?

Wish id have seen your video before spanning 14 feet on my lean to with 2x6's ,16 inch centres

super very clear explication

I've replaced a lot of notched beams and none that have been side bolted with 1/2 carriage bolts. Actually I've never seen a bolted beam fail on any deck in over 30 years of doing this.

If you want to use fire paint for the basement ceiling instead of 5/8 fire drywall

Great video! Would 5/8” drywall be accepted and simply above code standards?

would love to find an online calculator that could do this. probably is one somewhere ??

I think you're reading this wrong. The 'depth' of the porch is from the building face to the center of the 'header' which is the beam opposite/parallel to the building (as stated in note 'c'. They're giving you 2 examples either 8 feet deep, or 14 feet deep. Example, if your porch is 14 feet deep (building to header), that header, with 2-2x12, can span 10' 10". wide (side to side). Nowhere does it mention a ridge beam. It is talking about the header/girder that is supporting the ridge beam.

this video is so good

You gave a good representation of maximum cross-section. What would the minimum cross-section look like?

What beams to use when the beam span is 26 foot? (building a 26 x 26 foot free standing deck, but post are only located on the edges of the deck = imagine a grid of 9 post but center post missing, as underneath deck will be used as a "garage") What adjustment could I make for this to work? inserting any extra post in the center of the garage will not work

what's the alternative, can you please advise?

What about a scenario of dwelling unit within a shop like a barndominium. There’s a 20x14 area within a 40x60 shop. Does that separation need to be with 1/2” gypsum board or equivalent surrounding that dwelling unit?

Glenn, do handrails need to be continuous at a landing on commercial or is it the same as residential?

Why not just make a chart for each of the span types along with a picture. That would be 2 easy. Gotta use foot notes, bulletins and addendum. Most builders aren't engineers. Keep it simple stupid

Can you talk about whether or not a fire suppression system is needed in townhouse units if going with double wall construction? Thanks!

hi glenn, this was super informative. I'm undergoing a basement renovation and following the 2018 VA residential building code. One question I do not understand is whether fire blocking is needed in the ceiling joists of a basement? What if HVAC ducting or electrical runs down the length of a ceiling joist bay? I haven't been able to find clarity around those questions and the county inspector isn't providing direction.

what if they are made with bricks

YOU FUCKING TALK TOO FAST

Excellent and concise explanation!

I am an engineer turned deck builder- this video makes me so happy and informed!

So if I have a 12x12 gable roof a double 2x12 wouldn't cut it for the ridge beam?

Great video thank you for this excellent information

Maybe people who write codes should less about being a Karen and have more practical knowledge? Codes are written by worthless scum who want nothing more than to be relevant to someone, somewhere, so they feel a little important, even though nobody actually cares if they live or not.

Building a low-level 32’x26’ deck and this helped a ton! Thank you

Absolutely excellent summary and diagrams, Thank you.

What if I have a 2 post under a ledger board against brick? So the 6x6 would be carrying the load correct?

your videos are great. i’m building a 14x20’ deck that cantilevers; my beam needs to be 20’ but i’m confused on the tables, should i just use 4 beams made up of double 2x10 that are all 5’ long to equal the 20’ span? and insight would be appreciated

Thanks Glenn, great explanation of the 2021 and the proposed 2024. Makes sense. Question though, using the allowable beam span can the beam also have a cantilever on the beam beyond the post, like 1/4 the beam length?

How do you feel about deck, spacers, and not flashing over the ledger at all?

Is this for 4x4 posts on these beam spans or we talking 6x6 or does it matter?

There's no way an average person can keep up and get a good understanding he talks much too fast and move through the lesson too fast.

If you play this video at .75 speed, it is more comprehensible.

I grew up with a hammer in my hand and knew how to frame at a young age. But I did not know codes.

That beats my 1936 City of Miami Building Code where I believe we first mandated hurricane shutters. Love the history.

thank u

Dude your amazing at what you do I’m a building professional on my route to becoming a building official. This video is exactly how I like to view questions before responding. Your library is off the chain I wish we could talk shop 😎

Such a helpful video! One Question- I need to calculate the "joist span factor" on a 9' wide freestanding deck with only 2 beams, and joists cantilevering 18" beyond beams at both ends. To determine the "actual joist cantilever", do you add both cantilevers together (making it 36") or use 18"?

Simpson makes a new connector that connects ledger's through the brick veneer into the woods behind.

Great video on mindset towards the code

Good video. Makes it easy to explain to homeowners who don't realize how fragile brick veneer is. Put a row of piers in 2 feet off the house And cantilever Your joists and band within an inch of the wall. Add Diagonal support as needed to Minimize lateral movement.

Is there any mention of sheet metal as fireblocking in code? It's used to fireblock around flues, so it must be effective to block draft...

Good job👍

I would like to know how to build one

What about the NFPA clearance minimum of 2-1/4"

Need someone to do a video like this for the NEC books

I was first taught how to properly build a stairs in about 1972, and have been working with houses since, so I've had some time to think about stairways. Maybe the most important thing to grasp is that there is no such thing as a safe stairs. Anyone of any age or ability can trip or fall on a stairs built exactly to today's or yesterday's code requirements. When they do, they need two things a well attached grippable hand railing (or two) and nothing too dangerous to fall into. The purpose of the code is to make them as safe as we reasonably can. The changes that I've seen over the last 50 some years mostly have to do with the interpretation of what is "reasonable".

Excellent deep dive into the codes. It's very interesting to see the origin of codes, well done sir.

This is a funny video I have a shed 50years old 9 ft walls block foundation clear span NO POSTS supports using 2x6s 3ft on center that go from the wall to the centre both sides 4 12 pitch strapped with 1 by 4s metal roof. I have seen 2ft of snow plus on this roof and it is a straight as the day it was built, you folks that push the education building code seriously think of the waste and of coarse you will brag how it with stood a 9 earthquake or a 250 mile per hr hurricane but sensible people don t build in areas and then infect us with there stupid code of building serious a DECK a you parking a d9 bulldozer for a conversation piece

Glenn you are DA MAN.