Structural engineer walkthrough of custom residential home

Walking through the Needham project with structural engineer Rens F. Hayes IV, P.E.
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VIDEO NOTES
Site Visit walkthrough high-end new construction, renovation, and remodeling projects. Looking at siga architectural details, building products, framing, electrical, plumbing, staircase, Rockwool, modern design, door hardware, sealing, repair, fix, replace, subtle details, modern staircase, mechanicals, and finish details. Wigluv NS Builders shares building and project management insight while showing the step-by-step progress of ongoing jobs. Site Visit is hosted by Nick Schiffer owner of NS Builders. Waterproofing your basement?
Building products, cabinet tips, new building secrets, and framing become architectural details. New construction and renovation, rockwool ideas start and finish with building and running successful builds.
NS Builders operates in Boston, Newton, Cambridge, and in the greater Boston area. Currently, 5 projects are under construction with a few new projects coming soon.

[@NSBuilders]

Follow Rens www.youtube.com/@designdevpodcast

[@colinstu]

If this engineer had a YT channel I'd watch it. Love that stuff.

[@bigdreamsonsmallacres]

I could listen to him all day lol

[@abigailgard6501]

He does! www.youtube.com/@designdevpodcast

[@akismos]

The structural engineer is Rens Hayes, co-founder of H+O Structural Engineering and host of the 'Design Development' podcast. Check it out 😃

[@scott7695]

As an electrical engineer I find this is a great video on the collaboration that should exist between engineering and the tradespeople that have all their great building experience. Often times one side or both can disrespect the other with the typical “that engineer doesn’t know what they’re talking about I’ve built a million of these blah blah blah” or “that doesn’t understand simple physics blah blah blah”. It’s about team and doing right by the owners not to just get through the build past the inspections but that they have a great investment for tomorrow long after the job site has packed up and moved on

[@jan_phd]

There's money to be made, so the customer must be impressed with supposed mumbo jumbo to make that money. The customer can simply sign off the risk so that the risk can be signed off from customer to customer. "Your house may fall on your head, or burn down around you... this means you must be such and such distance to someone else's property... etc." But no... money must be made, so laws are in place.

[@matthewpuntin5011]

Excellent explanation by your structural engineer. I'm a civil engineer that dabbles in structural also. I appreciate his descriptions of the various areas of concern. My favorite comment was regarding the headers with the insulation, "I'm not concerned".

[@antzanton4842]

Incredible detail ,amazing framers

[@o2kala649]

Keep in mind that building to code is building to the accepted minimum. You should always exceed building code where possible.

[@joehammerbacher4864]

I have never doubted the structural integrity of my house more than I do now, after having watched this.

[@Imrooniel]

That shrug with "by code we could've built this, but.." wow you can tell the man is at loss of words

[@victor_barranco]

Diaphragms are a confusing to understand at first. You can think of them as horizontal shear walls. The sheathing on the roof and floor act in the same manner as the sheathing on vertical shear walls (only flat on the floor or roof). When he says they are cantilever diaphragms, he means that the roof or floor sheathing projects outward without lateral resisting element on the outside. The only lateral resisting element is the interior shear wall. Much like a cantilevered beam with one support and hanging free at the other end. Great video!

[@mikewatson4644]

Very interesting to see the perspective from an engineer. I tend to overbuild, but sometimes an engineering look would be helpful. Kudos on the build.

[@1974jrod]

Especially on houses, engineers overbuild because they're not sure.

[@dollyhadbraces9361]

@@1974jrod many such cases , take ac s , a guy will over size when not sure , and the thing kicks on like a frieght train ... for 5 minutes .... or oversizing a water line thate takes 1.25 as 1.5 is cheaper but you can only beat a water meter by 1 pipe size , so if y have a 1" meter you got to rip out the line ,

[@m.5051]

@1974jrod Funny that you would misread that and then say that. That's why the world needs engineers...to do the thinking.

[@margosulek]

This is super interesting for me to watch as a final year structural engineering student, I'm looking forward to designing stuff like this in the future 😍😍

[@henrynagle8097]

This looks to be an extreme case t

[@jeffanderton7779]

Incredible execution of very complicated framing. I’m a retired general contractor that built more than a few high end custom residential units and would have loved to have the relationship you obviously have with the structural eng. Kudos to you and certainly made me trip down memory lane. Keep up the fabulous work

[@richardhutman8515]

Great presentation, he would be a great engineer to work with! Also great to see the attention to detail on the framing! This is like carpenter porn

[@patrickbateman9314]

As a current architecture student who also tried to understand engineering basics for design elements, this stuff is super helpful as It provides a visual explanation of things for me. I’m always trying to learn about engineering aspects of architecture so I don’t design issues myself

[@Thomas63r2]

I will never build a house of these dimensions - but this was a fascinating walkthrough. Given the youngish ages of the builder and structural engineer, I can only imagine the great projects they are likely to become involved with in the future. Bravo - well designed and well built!

[@kodykucman8474]

Very very clean framing good job boys!

[@NancyHood-ye6hl]

Wow! My backyard! Grew up in Marblehead!! This is SO cool!!

[@880life.7]

I watched this video twice, and I feel like I will be referencing it before my next few framings. Great stuff! I love it!!!

[@Zorlig]

Holy crap, considering the floor above a wall as a cantalever instead of relying on the walls under it to provide the needed lateral support due to all the windows. Color me impressed!

[@cheezyblasters9262]

It's just a cantilever diaphragm my man, we do that all the time. There's a great book called the analysis of irregular shaped structures, should be mandatory education for all structural engineers who want to design timber. It's basically a guide to custom home design for structural engineers.

[@giovannifiorentino8947]

Master class!theory apply to practice. Best way to understand concepts.

[@kunit15]

This is an excellent video & taught me a lot. Highly recommend. Thank you for sharing this.

[@dustindircks6647]

This is a quality built home. I’ve been a roofer for 21 years. And not a paper contract. A owner operator that actually installs the roof. Mainly do new construction asphalt shingles. When I started out most framers built very quality homes. Every year since then I see more and more hack jobs. There’s still a few high quality framers but many of the old school crews have retired as the owners were baby boomer generation. Now I see lots of 20-30 yrs old that either never were taught quality or simply don’t care. I take a lot of pride when I install a roof and it’s very discouraging seeing other trades just not having the same pride in there work.

[@jamesjazwinski4412]

Amazing to see a house with this level of complexity. Awesome job designing it with a fairly simple foundation under it. I tip my hat to the engineer. Maybe a few to many corners but meh all the corners are great for stability. Who likes building a square box anyways.

[@javierreyes786]

i'm a structural bridge engineer I would love to transition to residential, love this video to stoke that fire

[@alansavage3549]

What an eye opener. Thanks.

[@RICKR1ZZLE]

Great Discussion. Really interesting perspective and a fair bit more technical than I would have expected.

[@OGCAries]

This is fascinating content. Keep it up!

[@RXQ003]

Gotta appreciate intelligence and craftsmanship 👌🏽👌🏽👌🏽

[@MichaelNatrin]

Fantastic explanations of all of the details. Great video.

[@DrKnowsMore]

Very cool. Thanks for the thorough explanations

[@denfl6605]

Great video, questions, and explanations! I've never met a residential builder willing to listen to all my technical explanations :) I wish there would be more engineers like this one involved in residential construction. There would be a lot less structural damages after storms.

[@colebateman4887]

Very well explained and I'm glad to see what appears to be a healthy relationship between the Builder and Engineer. As an engineer myself, we do not always have the opportunity to explain the background reasoning and calculations that go into a few structural sheets for a residential home plan set, let alone have that correspondence flow through to the subcontractors. Like many of your videos, it's great to see a team that communicates so well and a Builder who is knowledgeable enough to "stick up" for the structural details. If you are ever looking for an engineer on the Cape, please shoot me a message!

[@istiaqratul162]

Thank you for sharing this amazing knowledge. I learned several new terms and I subscribed because of this high quality video.

[@kmensa5301]

God give you more projects for doing everything by the book; awesome

[@mutchmedia]

great episode. excellent explanations.

[@samgm3618]

Beautiful framing job

[@Skateboardfreakist]

Perfect for me to learn english engineering words. For example, hinge, studs, giebel, cantelever, diaphragm, truss, column, slab, ridge

[@benjaminfranklinkivettiv9433]

Great explanation and engineering!! Great build. I guarantee the sheetrock joints will crack😁

[@alexpaden9320]

siiiiiiiick fireplace chimney!

[@mkckf4l]

Great job

[@lafrancois6323]

It's been a while I've seen a good building video.

[@Turtleslickme]

Man, this collaborative effort is always nice to have with contractors/builders. It is sad it cannot happen with all jobs because it would be unsustainable for the engineering firm. For those who may be interested in structural engineering trying to find this collaboration just know that, in residential design, this happens one or two times out of every 130 odd jobs that are completed. This type of stuff is rare

[@tonytango6676]

My dream home is rectangular with a hip roof and no extra corners.

[@adamallen8863]

Same, no valleys

[@alsteeves2044]

He said it at 29.25, "you can design anything, it just takes space and money". This design is a case of function following form, not the practical reverse way. If buying a Rolls Royce and you have to ask about repair and fuel costs, perhaps you shouldn't be buying it. The framing is one thing. Next up the insulator and drywaller are getting ready to invoice this job and saying sure we can do it - for a price. One question I have is why when spending like a sailor on leave, there is no ICF used. Perhaps energy efficiency and quiet comfort are part of the functional aspect that is being ignored. Anyway it is a one of a kind chateau and hats off. I hope the owner has many years left to enjoy his dream home. Subscribed and hope to see more of this and the heating system to be used when you get to it.

[@brennangraves6458]

Completely agree about typical building codes, they are bare minimum and often will not be the best choice for longevity.

[@1974jrod]

Based upon what experience. There a millions of houses built since thr beginning of this country to thr middle 70s without any building codes. Building codes were to establish a minimum standard. Overall, they are good standards.

[@irritablearchitect]

@@1974jrod - Based upon the FACT that I'm a licensed architect. I'll keep my own counsel on the subject...you even argued the point I was making FOR ME... establish a MINIMUM standard.

[@1974jrod]

@@irritablearchitect how many houses have you built with your own hands?

[@brennangraves6458]

@@1974jrod I've designed more buildings than I care to remember. Nice DEFLECTION, btw. I win.

[@irritablearchitect]

@@WayneMarion - Deflection. You've ALREADY LOST.

[@bobmottau7668]

Very good video, the engineer should start a KZbin channel. Great framing job nothing short of experience.In the business for fifty years.

[@mariuspetkelis1168]

Love the channel, very great inside to your work process. Can I just ask why is there mineralwool insulation on the inner side of the basement wall - instead of the outer side ?

[@sroyal76]

👌 love it

[@MoonbeamBase]

The carpentry is so clean. I'm glad you didn't gloss over the engineering perspective here.

[@mk1st]

Unusual nowadays, at least in my area, to see so much plywood as opposed to OSB.

[@abenzuoo]

this was good content :P

[@bigmountain7561]

Hi Rens, when you structurally designing a house how do you compensate for the snow load for the roof. Since like example homes that are in Buffalo that sometimes get massive structural stresses from monster snow storms how is it calculated

[@mattmag3089]

Cs-wsp: continuously sheathed wood structural panel (portion of a wall sheathed plate to plate to give the wall shear strength) Bwp- braced wall panel ( similar but could be drywall, windbrace etc) Cs-pf- continuously sheathed portal frame. (Think typical 2 car garage wall, with 2 small walls. Header is ran continuously from end to end, through each bwp)

[@strawberriebabieex3]

this is a great video (topic). and i am impressed from following your youtube site for several years to see how you have grown into more significant projects. as an architect, i appreciate the extra level of technical details you have shared. I would be curious of some basics, like floor to floor heights that seem to work best and any module that you may prefer for construction. or if that is all left up to the architect to decide. I would think there are some dimensions you might prefer at this point. Thanks for sharing your insights. look forward to seeing more.

[@mrslkungpowchikn1206]

How might the design change on this house if it was done with Fox Blocks? ICFs? From the snow in background, doesn’t look like it would be a bad option.

[@cheezyblasters9262]

For dimensions that work best you want to think about the building materials and functional room dimensions. Plywood is 4 ft x 8 ft sheets. A good functional room is between 10 ft wide and 15 ft wide with 2x6 exterior walls. 2x12 DF#2 floor joists span 16 feet with an optional 4ft cantilever. For shear strength you have to block horizontal seams in the wall ply, so 8 ft is the best story height (no seam). Then any even 2ft or 4ft dimensions for the building exterior dimensions. And 16 ft spans for the floor joists bearing lines and you're in the primo zone for both cost and function. The roof truss can span just about anything. Also depends what kind of foundation you need, designing for deep foundations vs shallow.

[@ForensicCats]

First time to your channel, keep up the good work. Allow me to address the header you have elevated to top of wall... it can matter if your studs (jack /king) are "weak"... The height vs weight /loads (live and dead loads) can equal torsion buckling of your studs. With that said, I like your top placement and to "shorten" the height distance, secure your header into the jack and king location to be more like a gusset "zone" which transfers loads down your studs and maybe consider added blocking or tension straps down sides of walls if possible (this can also be done with more jack and king studs)... Number one is what is the load your header is taking and which studs are taking the load paths... Did I lose you? Edit: Adding I noticed the electrician notched your studd terribly so, consider adding another studd, sister it (I am sure you know where I am referencing)... 29:00 outstanding on adding two sides of plywood on the rafters to create a gusset connection and I hope you strapped it to your studd wall also, tie downs, the more rigid those intersection "nodes" are the better. As far as no ridge beam goes, that was around the 70s that was phased out... But, trust also do not use ridge beams, so u can say, it's still not used today... I like the extra steel in your , below grade wall but I would add, if you are relying on the floor diagram to help stabilize your basement walls, you might want to consider a system that literally requires that... those are panel wall systems that require the floor to be the top wall bracing and they are water tight and go up in one day.

[@ADKflyguy]

Lets see the math.

[@YoungBloodWASP]

I think you are due for your own engineering video

[@stevehickson1812]

The comments at the end are interesting, I am a design engineer for a wire harness manufacturer and when we review product drawings, if we find small errors, we can be almost 100% certain there are more errors we might not catch. Very similar to what he mentions to you guys, if you can’t spot any errors, you can be confident in the final design.

[@hi-ye4rz]

Generally there is a few kinds of inspection Cfs inspection Steel inspection Rebar inspection Concrete inspection Energy inspection for exterior and interior R values and copper piping insulation Final inspection for mechanical and sprinkler etc..

[@hi-ye4rz]

Commercial

[@dennisbott2069]

Nicely done. Ren is the man!

[@MrRustyjackson]

Really enjoyed this video. I noticed some ceilings are strapped and some not. Do you strap all your ceilings and if so, what is the purpose of strapping? Do you regard it as a structural necessity or simply to allow passage for cables, etc?

[@aactualword3]

Recently moved to Boston from the midwest. Its code out here to strap, just to future proof for running wires and whatnot down the road. Rarely saw this in the midwest so it must be regional.

[@frednewman2162]

Let me ask a couple questions; Because of the height, step angles, and exposed sizing of some roof segments was wind loading taken into account, or should wind loading be considered in situations like this? Were foundations and footers enlarged for added strength in the amount of extra framing for the roof and wall supports?

[@jakeowens1770]

Triple ply headers get a load "bonus" on the resistance side of lrfd engineering. Translation, its stronger than sandwiching a piece of foam insulation in between

[@Prestonzeit]

how is the rim of the basement insulated?

[@jamesbailand4311]

Are you going to make the flat roof, a warm roof?

[@LJRockstar]

I spend so much time working on my house, asking myself why the builder did such a poor job. It's stressful. I would like to hire this team to build my next home, so I don't have to spend the rest of my life stressing out about how to fix everything.

[@martinphillips7221]

Great quality work I would hire you in a nano second .In California with earthquake issues I would engineer the place way past code.

[@seanm3226]

Are you saying California’s code doesn’t take “earthquake issues” into consideration?

[@ldm58427]

Fortunately, prescriptive in CA is much more stringent than the IRC he references. A masonry wall without any rebar for a house would never pass inspection.

[@stucorbett7905]

Why the strapping on the ceiling in homes back east?

[@2DXYSU]

The elephant in the house is that the architect is not in the video! This framer and engineer seem to be at the mercy of an architect who designed without knowledge of thought of structure from the beginning. He just expects these guys to make it work somehow. Good design does not work this way.

[@gssuper1438]

What product is the black stuff on the footings?

[@mackellyman5642]

It's all about having a "Visual" on it!

[@blacky4947]

how is the Schallschutz inside the House?

[@bobbray9666]

That's a lot of wood on exterior walls. Exterior insulation would be my preferred way of limiting the thermal bridging.

[@maksmachula]

Why no icf ?

[@mrslkungpowchikn1206]

How do we find framers like Demetree? We are looking to build a house here in Vancouver WA area, 10 minutes from Portland OR airport. We also would like to find an engineer that can help us get the size home our family would like, higher quality, but pick a design that isnt as expensive as some really fancy roof lines homes. Debating whether or not Fox Blocks would make most sense for us vs traditional stick frame. We get a lot of rain, mild weather and live in view of a noisy highway. I really appreciate this video and makes me regret not taking more Civil Engineering classes before switching to Chemical Engineering. The subject is fascinating to me now; there is a lot more room for creativity than I previously realized. I also love all of the new innovations in Environmental engineering i’ve been seeing the past few year (Environmental Engineering was my minor in addition to a 2nd degree in Environmental Science, but back when i was in the school and doing internships it was more about environmental “compliance” issues than anything.

[@mrslkungpowchikn1206]

@@customyourway awe thank you! Only thing is we are much closer to Portland OR - just a 10 minute drive from the PDX airport! I’m not even sure where the city you mention is but it doesn’t sound close. If you know any who are right on the OR WA state border that would be great!

[@mrslkungpowchikn1206]

@@customyourway looked it up and it is over a 2.5 hr drive to Graham WA. But any in or near Portland OR or Vancouver WA would be great!

[@jamesoncross7494]

All the high-end builders build at least 10' walls in the basement now.

[@calvinh9453]

Great video with a lot of needed info. Big question since 2 engineers could come to 2 different ways of doing something… is there really a right and wrong way to build a home? I hate hearing ppl say that’s wrong or do it right when it’s so opinionated

[@jamesjazwinski4412]

There is a minimum. Many can barely do that. The concrete foundation company did a good job but missed a few elements to the rebar mat. I've had engineers be fine with that quality of job. Like it's easily passable but I've had engineer's that would tell me to add bar where they did not. That's a simple single 12"×12" mat. Nothing special in the house that would require much more out of the foundation. Especially with the 5million corners it has.

[@alexpaulsen1487]

i wish i could afford a house built by NS. I havent heard prices of his homes but when you know you know

[@Joedex1625]

I want to do this when I finish my civil engineering degree but I dont exactly know what the position is or what companies are hiring for this sort of thing

[@1974jrod]

How many square feet? How long did it take to frame with how many guys?

[@whiteywho7151]

What are the dimensions of the garage doors?

[@RRENH]

Those site-built trusses were interesting. Can you use plywood guessetts rather than a conventional ridge board? The ridge board just keeps the two rafters from pushing past each other. The guessets would do the same. I can't see a reason why this wouldn't work so long as you have a properly sized rafter tie in the bottom 1/3. Why do you never see this?

[@RRENH]

Just looked it up in the IRC code book. 802.4.2 it states that it is allowed!

[@svroundabout]

This engineers 2 cents: Full height shear wall segments, force-transfer shear walls (with the straps) and perforated shear walls. Each have their benefits in design and construction.

[@youtert]

Is that a house or a cathedral?

[@adriansanchez4875]

Just making sure, I could become a structural engineer with a civil engineering degree (ABET) right?. I have to do an internship last 2 years of course. I'm also learning AutoCAD software (Revit, Civil 3d, AutoCAD ) to add to my resume, what other things should I learn before graduating? 2027 may graduation

[@DisgruntledAdult]

The hell guys?! Where’s your show on HG, those sons of bitches could use something like this. Now I couldn’t build you a dog house but this type of stuff has always been interesting. Walking through complex builds checking out the frames and telling us why they did this. Why they did that. Shits cool. Now I need royalties for giving you the idea. 😉

[@PJ-vp4xd]

at 4:50 why are the I-joists sitting on these furring strips on the ceiling? it doesn't feel like a very strong connection

[@joeymartinez5515]

The furring strips can serve as bottom of joist bracing, and/or aid in sound reduction.

[@PJ-vp4xd]

@@joeymartinez5515 good to know, thanks

[@Robertdiamondking]

I don’t think the straps are giving it shear value. I was under the impression that the straps are used along the header lines and then continued onto continuous solid 4x blocking to keep the header openings from pulling apart from the walls as strapping is required in conjunction with a shear wall. Also your window walls have very little shear value and as you mentioned some would have designed this with moment frames. We’re these not added because it is not in a seismic area and wind strength is within the limits? Maybe this is a technical word difference but I always associated shear value with racking and twisting but I guess you are also saying that it’s pulling apart.

[@tw6328]

In the room with all the glass it looks like there’s no Jack studs, what’s the detail?

[@dmitryshevchenko349]

Beam is above

[@Dancing_Alone_wRentals]

That was fun. Much different atmosphere in the conversation than when an inspector shows up just to show you they are your overlord.

[@tinoslaponi8514]

I would like to remind everyone that that P.E.'s tend to forget that most people can't afford a 1million dollar home.

[@seantap1415]

That header might be adequate like the engineer says but 2 plie with foam separating the 3rd plie is definitely not as strong as 3 plie nailed. together properly. Math doesn't lie.... cheers this was an interesting video

[@1974jrod]

The header you are referring to is more than adequate without the third ply.

[@bluegorillacookies]

4:13 Why in the world would you put so many corners on a house? Every corner after the fourth corner is more time, labor, materials for less square footage. This house has like 33 corners!

[@jimmeh213]

Looks like half a million worth of timber products

[@Katana_00]

$$

[@mrslkungpowchikn1206]

Yes, i would like to know the cost for those materials excluding labor. I also wonder if Fox Blocks could have been a better, cheaper solution? 🤷🏻‍♀️ im evaluating stuff for our own future house now and we live in the wet Pacific Northwest.

[@thenear1send]

Custom homes are not common in my area, so im not familiar with this level of framing complexity, but all I can think of seeing this video is "why design such complicated structures". I know there is an architectural demand for such structures, but personally I'm very much into simplistic designs, which would make these structural engineering considerations much more elementary. Very impressive build, never the less.

[@stephenmurdoch2970]

Folks always freaking out about headers but couldn't care less about stack framing their joists/trusses. Boggles the mind.

[@yokotaashi]

what in the world is that design

[@killerhz]

I hope the framing crew got backrubs at the local massage parlor after this job

[@cheezyblasters9262]

14:40 They are called force transfer around opening shear walls FTAO. The APA has a FTAO sheet they put out for free, it's great. Whoever designed this should really read and understand The Analysis of Irregular Shaped Structures. The blocking for the horizontal force transfer strap needs to be (2) 2x or 4x material, and the king stud should be clipped with an A34 or similar at the top plate, header, window sill, and sill plate. These pieces may fail below the design threshold the way it's built here. 17:14 those studs should have been balloon framed.That beam across the middle of the wall is a hinge, total fail. Those LVL king studs are only for the windows. 19:18 I hope they specified a blocked diaphragm for the cantilever diaphragm. 29:35 They make curved glu lam beams GLB. I prefer GLB to LVL because they can have a camber which reduces the size by cambering out the deadload deflection and creep, and they can be made with water resistant glue and be pressure treated or made of rot resistant wood. LVL literally disintegrate if they get wet. Same goes for all LVL type wood products. 33:45 Finite element models FEM for timber frames? Fancy. I've done steel and concrete with FEM but not usually timber

[@gwappo4852]

7:54 25:24 35:15

[@ericeinstein5980]

It’s interesting to consider perspective of all parties involved. It looks there aren’t any “non standard” structural details (retaining walls over 8’ tall- hot steel structural members. It might be safer to use a structural engineer but it most definitely cost the owner over $100k and was not necessary using the prescriptive code requirements. I would probably take a few cracked windows that cost $500 to replace every 10 years than the extra $20k to have a “designed and stamped” highly reinforced poured foundation system.

[@DebacleWhimsical]

Thatzs not a house. Thats a mansion.

[@SeanKingeryHomes]

Our codes must be alot stricter. I don't see anything complicated enough that would require a structural engineer for.

[@joeymartinez5515]

Sometimes it is not how complex it is, but rather the span distance of framing elements.