Hector thank you again my friend, I, the owner am learning so much from you. 🙏🏾 you are so correct though the designers and contractors are good at what they do, they don’t know everything, we all learn from each other
Hektor, it is the engineer of record who will design the shear walls. The plans examiner will review and approve the plans based on the information provided. The building inspector has the authority to request additional work for code compliance based on his observations the the of the inspection. Now, if the ADU is a garage conversion and it is over a fault, you may have other issues where it may not be feasible to change the occupancy group from a U (garage) to an R-3 (residential). Check the Alquist-Priolo Act. Just my two cents
Absolutely, the Built environment comes from Engineering and the Building Codes coupled together to provide a safe structure. And knowledgeable contractors build accordingly.
Hey bro, nice that you were able to figure this out. FYI as a contractor is not our responsibility to tell you what to do, I personally share as much info as possible to my customers. Also note that since a contractor is not an engineer, we are cannot decide on how to do the installation, we follow the plans to the T. Did you have your engineer change your submitted plans for sheer wall to be installed on the inside I assume also tell your people this is only when converting an existing building specially a small garage, I doubt the engineer would agree for a 2 story building because of loads.
Very good Hektor. I am in the middle of enclosing my laundry room/bonus room attached to garage. I have built the partition wall (not secured to floor yet) separating the two but since the new partition wall joins between the orig wall studs I temporarily removed the existing shear panel in order to add studs (so I could nail directly to). I’m not sure if you can nail a partition wall to just 3/8” plywood (without studs backing it up) so I felt it best to sister studs for nailing strength. Comments?? What I found on my 1987 single story home is that only the two parallel walls were shear walls. I’m in Riverside county. So far I have researched my 3/8” wall is nail scheduled 6” & 12” but my house had 2” & 10” or so. I haven’t found out why yet. My question is when you frame, you have stud touch stud then you add shear panels right? Or, do you add the sister studs then shear panels THEN butt the partition wall??? Your comments or others are appreciated.
The channels are not for noise reductions, it's the air gaps between the material. The channels are there so you can install other finish material like drywall. It separate the materials which yields air gap to reduce noise. The metal channel only acts as holders for drywalls... Noise reductions are more complicated than just those metal channels for hanging drywalls.
You are literally correct. LOL Those channels are used to isolate drywall that will be attached to it from the studs so that sound will not be transmitted through the walls.
It's hard to say if your contractor will tell u about this. This has to do with total.honesty and nothing else because you are cutting working and money he could make.
I'm doing my garage right now, I'm going to demolished the stucco, just because is in a really bad shape, I will install the plywood on the outside, and city asked for hold downs as well.
Excellent video! I always wondered if you can have shear wall on the interior. In some areas, stucco itself can be shear wall(or wall bracing) irc 2006 602.10 under wall bracing cement stucco can be used as wall bracing
These videos just keep getting better and better. Does the interior shear wall make it harder to do anything like electrical where the guy might be used to working from the inside? Does it change the order you do things in the construction?
The city inspector has to sign the worksheet before any work begins. I passed my rough electrical inspection and Insulation inspection, before i got the approval to install the shear walls. Therefore no additional electrical work would be needed after the installation of the shear walls. If everything is done right it does not change the order to to things.
I'm amassed at how people who know so little try to explain what they never have seen before and think their genius because there doing it for the first time, while people in the trade have been doing it for over 10 years if not more. First of all, it doesn't matter if the shear wall is on the inside or outside as long as the structural plywood or OSB is installed with its coordinating hold-downs. Don't know why you put up all that plywood when you usually put up fur strips on the remaining studs to level out the shear wall. Also, tell your viewers, that you will need custom doors frames to accommodate for the extra thickness provided by the interior sheerwall.
Maximus i appreciate the constructive criticism. I I'm a genius because I saved tons of money with a brilliant strategy. It does matter where you install the shear wall's because it’s called out in the approved plans. Someone who's been in the trade for 10+ years should know this. All the work was inspected & approved by the city therefore it was done up-to code. We did install custom frames for all the doors. That's a boring thing to explain. I'm just sharing my story so people know what to expect. If you know an alternative way to save people money please share.
@@HektorCastillo You really think the stucco on your garage had no OSB or plywood underneath it??? What I think happened was your wife designer put this in your design and thus the inspector is making you stick to it as approved. Your home was built with sear walls and rebar in your footings. All you needed to do was pull the plans of your home from the city. Your garage was already up to earthquake standards in terms of sear walls ... unless they wanted more tie downs to the foundation.
@@Hizenbird I believe he said he his home was built in he 90's and it's in CA. Thus it had plywood on all the walls of the home. They were all shear walls. My garage was built in 1929. Yet it has shear walls because they eventually put plywood siding and then I added additional plywood siding.
@@reseller7 Got it. My garage is in Ca. also. Just found out - my garage doesn't have OSB (didn't exist at the time) but rather uses diagonal bracing. That explains why there was no plywood or OSB when I drilled through the wall. :)
Hi, just so you know, shear wall panel can be installed either side of the wall (2x4) outside or inside. It doesn't make any difference as long as you got the shear transferred correctly. There is no code that force you which side. It's just a a plan where your architect/engineer use the typical detail drawing.
Hey there. I am in the same situation. My plans have the shear braced wall on the outside but I have existing wall with stucco on the outside. I don't want to break the stucco at different points to install the shear wall. Can I go ahead and just install on the inside even though the plans shows them on the outside? Will I get called out for installing them on the inside? I will really appreciate the info. Thanks.
It is quite common for remodels to do sheathing on the inside. However, it cannot always be done since depending on the magnitude of the loads/deflection criteria you might need sheathing on both sides. There are more options other than shearwalls too, some of them are proprietary and some just take sharpening our pencils when it comes to calculating the demands. Let your engineer know he/she will most likely find the best and cheapest solution for you :)
This is what I was going to say--common to put the shear sheathing on the inside for a remodel, though it is not common to need sheathing on both sides. Those of us who do remodels, consider this option all the time where it makes sense. It's more involved if you are remodeling on a wood floor. Going for the resilient channel is great!
Where did you get your design/plans? I've been looking for design help on my ADU. Already got site plan and zoning approval. That's a great price, and smart design 👌
Awesome idea. Thank you for sharing. How do you justify actual cost valuation when the assessors office wants to do use market evaluation? We know it doesn’t cost $400 sq ft for a garage conversion. Please share.
Hello Diana that's a tough one. I don't know how the city works their numbers. The only way to find out the actual cost would be to call the assessors office in your county.
thanks hector, great videos. unfortunately your resilient channel probably ins't going to work on a shear wall like that because there's only 3/8" between the metal face and the shear wall. so, when they drive the drywall screws into the resilient channel either they won't get enough screw behind the metal or they'll go into the plywood which negates the effect of the isolation provided by a properly installed channel because the screws will be making it one assembly. just a thought for next time.
I have a standard wood siding house.There is a thin layer of plywood on the frame of the house and a moisture barrier behind the siding. Is the plywood attached to my studs considered my shear wall?
Sheathing alone is not necessarily a shear wall. It does provide some lateral load resistance but is not considered a "designated" or "designed" shear wall. The signs that a wall is a shear wall are a high-density nailing pattern between the sheathing and studs and large anchor bolts at the ends of the shear-wall embedded in the foundation. If in doubt it's best to have a structural engineer familiar with retrofits make a visit to review the structure and assess the condition.
Its covered with a waterproofing and crack prevention membrane called Redguard. The city inspector told me to install it before he signed off on my framing inspection. The cost for the product was about $150 and i installed it my self
I assume your shear walls go all the way up to the roof, not just up to the wall,, where ceiling joists are. All shear walls end at roof not just up to ceiling.
@reseller7 absolutely wrong. Shear walls or braced wall panels go from foundation to the underside of the roof sheathing. There will be some form of shear transfer
Yes i did. When building an ADU there will be an insulation inspection before its covered. The insulation has to be R15 for the wall an R30 for the ceiling. Right after the city inspector approves the insulation you can install the shear walls. However follow your plans in regards to where you need to install the shear walls.
There was no code we had to follow in regards to a fire rating for the shear walls. I did install fire resistance insulation and fire resistance drywall on a shared wall. The fire resistance drywall was a requirement per approved plans.
Shearwalls are way more than just structural ply. Shearwalls consist of HDs, a post and the ply. It’s a system. And you never ever install Shearwalls after rough electrical plumbing and hvac. You always wanna do all your structural work first, of course not if the shear is interior like on this video
Every county and city adopts its own version of the California Building Code. For example Long Beach will have an additional requirement for ADU and other city's would not. At the end of the day don't worry about this because the city will tell the designer what they need for your plans to get approved.
@@HektorCastillo and hopefully passed rough framing, rough plumbing, and rough mechanical as well before insulation. If the windows are in the shear wall it should have blocking and nailed straps on top and bottom, if not it will fail.
Typically, Designer is your interior design person, architect is a licensed person that can draw plans for commercial/residential and fully responsible for it. But it doesn't mean they are any better than designer if it's a small project, and especially residential project like ADU, room addition, remodeling, depends on your project. Regular house, remodel, addition, or ADU may not require architect at all, as long as the plan meets all the requirements base on the Residential Code or (CRC) California Residential Code.
Thanks for your video, it is very informative. I've been designing and contracting residential structures in the LA area for over 3 decades. I have hundreds of plans submitted and approved.to build. Currently, I have three plans in plan check 1 is an ADU. First of all, we all have to design for two lateral forces anywhere in the country, 1) wind and 2) seismic. Whatever is the dominant force becomes the control for the minimum loads. There are two different methods of design allowed in the code. a)By Design an engineer's design. BUILDING CODE(codebooks = IBC, LABC, CBC, and the NDS) Requires Engineering Calculations, typically using the NDS "National Design Specifications". (Shear panels with hold-downs for lateral forces and overturning forces) This will require (Hold-downs for overturning required) b)Prescriptive Design. RESIDENTIAL CODE (Code bools = IRC, LARC, CRC) Braced wall method IRC[T602.10.2]
Che hello, yes I hired him to do some corrections and he gave me a deal installing the shear walls. He's fully licensed and his info is available on my website. If you want to give him a call. Good luck with your project. heek.com
Hector thank you again my friend, I, the owner am learning so much from you. 🙏🏾 you are so correct though the designers and contractors are good at what they do, they don’t know everything, we all learn from each other
Muchísimas gracias Hektor! Tus videos son increíbles 👏👏 Estor aprendiendo mucho
Great tips thankyou ,please keep coaching us on adu it's very appreciated,
Thank you very much
Absolutely great video ! Thank you !!!
Hektor, it is the engineer of record who will design the shear walls. The plans examiner will review and approve the plans based on the information provided. The building inspector has the authority to request additional work for code compliance based on his observations the the of the inspection. Now, if the ADU is a garage conversion and it is over a fault, you may have other issues where it may not be feasible to change the occupancy group from a U (garage) to an R-3 (residential). Check the Alquist-Priolo Act. Just my two cents
Absolutely, the Built environment comes from Engineering and the Building Codes coupled together to provide a safe structure. And knowledgeable contractors build accordingly.
Hey bro, nice that you were able to figure this out. FYI as a contractor is not our responsibility to tell you what to do, I personally share as much info as possible to my customers.
Also note that since a contractor is not an engineer, we are cannot decide on how to do the installation, we follow the plans to the T.
Did you have your engineer change your submitted plans for sheer wall to be installed on the inside I assume also tell your people this is only when converting an existing building specially a small garage, I doubt the engineer would agree for a 2 story building because of loads.
Great video! Thanks for this series. Very helpful.
I want to do what you’re doing..I have a 2 car garage available...Where do I find a good designer and engineer?
Hugo send me a msg ill set you up with a good designer. You will get an amazing designer and a good deal. 818-564-5835
Thanks man so helpful
Very good Hektor. I am in the middle of enclosing my laundry room/bonus room attached to garage. I have built the partition wall (not secured to floor yet) separating the two but since the new partition wall joins between the orig wall studs I temporarily removed the existing shear panel in order to add studs (so I could nail directly to). I’m not sure if you can nail a partition wall to just 3/8” plywood (without studs backing it up) so I felt it best to sister studs for nailing strength. Comments??
What I found on my 1987 single story home is that only the two parallel walls were shear walls. I’m in Riverside county. So far I have researched my 3/8” wall is nail scheduled 6” & 12” but my house had 2” & 10” or so. I haven’t found out why yet. My question is when you frame, you have stud touch stud then you add shear panels right? Or, do you add the sister studs then shear panels THEN butt the partition wall??? Your comments or others are appreciated.
vertigo is the worst. love the explaination.
Oddly when you do the inside you can safely use OSB vs CDX. I would use some foam/foil insulation.
The channels are not for noise reductions, it's the air gaps between the material. The channels are there so you can install other finish material like drywall. It separate the materials which yields air gap to reduce noise. The metal channel only acts as holders for drywalls... Noise reductions are more complicated than just those metal channels for hanging drywalls.
You are literally correct. LOL
Those channels are used to isolate drywall that will be attached to it from the studs so that sound will not be transmitted through the walls.
It's hard to say if your contractor will tell u about this. This has to do with total.honesty and nothing else because you are cutting working and money he could make.
I'm doing my garage right now, I'm going to demolished the stucco, just because is in a really bad shape, I will install the plywood on the outside, and city asked for hold downs as well.
Excellent video! I always wondered if you can have shear wall on the interior.
In some areas, stucco itself can be shear wall(or wall bracing) irc 2006 602.10 under wall bracing cement stucco can be used as wall bracing
Homes built when his home was built had plywood or OSB installed under the stucco. I don't get it.
These videos just keep getting better and better. Does the interior shear wall make it harder to do anything like electrical where the guy might be used to working from the inside? Does it change the order you do things in the construction?
The city inspector has to sign the worksheet before any work begins. I passed my rough electrical inspection and Insulation inspection, before i got the approval to install the shear walls. Therefore no additional electrical work would be needed after the installation of the shear walls. If everything is done right it does not change the order to to things.
I'm amassed at how people who know so little try to explain what they never have seen before and think their genius because there doing it for the first time, while people in the trade have been doing it for over 10 years if not more. First of all, it doesn't matter if the shear wall is on the inside or outside as long as the structural plywood or OSB is installed with its coordinating hold-downs. Don't know why you put up all that plywood when you usually put up fur strips on the remaining studs to level out the shear wall. Also, tell your viewers, that you will need custom doors frames to accommodate for the extra thickness provided by the interior sheerwall.
Maximus i appreciate the constructive criticism. I I'm a genius because I saved tons of money with a brilliant strategy. It does matter where you install the shear wall's because it’s called out in the approved plans. Someone who's been in the trade for 10+ years should know this. All the work was inspected & approved by the city therefore it was done up-to code. We did install custom frames for all the doors. That's a boring thing to explain. I'm just sharing my story so people know what to expect. If you know an alternative way to save people money please share.
@@HektorCastillo You really think the stucco on your garage had no OSB or plywood underneath it??? What I think happened was your wife designer put this in your design and thus the inspector is making you stick to it as approved. Your home was built with sear walls and rebar in your footings. All you needed to do was pull the plans of your home from the city. Your garage was already up to earthquake standards in terms of sear walls ... unless they wanted more tie downs to the foundation.
@@reseller7 The stucco on my garage (1942) has no OSB or plywood underneath it. I can only assume that my garage is not the only garage like that.
@@Hizenbird I believe he said he his home was built in he 90's and it's in CA. Thus it had plywood on all the walls of the home. They were all shear walls. My garage was built in 1929. Yet it has shear walls because they eventually put plywood siding and then I added additional plywood siding.
@@reseller7 Got it. My garage is in Ca. also. Just found out - my garage doesn't have OSB (didn't exist at the time) but rather uses diagonal bracing. That explains why there was no plywood or OSB when I drilled through the wall. :)
Hi, just so you know, shear wall panel can be installed either side of the wall (2x4) outside or inside. It doesn't make any difference as long as you got the shear transferred correctly. There is no code that force you which side. It's just a a plan where your architect/engineer use the typical detail drawing.
Thank you. I'm sure a lot of people appreciate this info.
Hey there. I am in the same situation. My plans have the shear braced wall on the outside but I have existing wall with stucco on the outside. I don't want to break the stucco at different points to install the shear wall. Can I go ahead and just install on the inside even though the plans shows them on the outside? Will I get called out for installing them on the inside? I will really appreciate the info. Thanks.
It is quite common for remodels to do sheathing on the inside. However, it cannot always be done since depending on the magnitude of the loads/deflection criteria you might need sheathing on both sides. There are more options other than shearwalls too, some of them are proprietary and some just take sharpening our pencils when it comes to calculating the demands. Let your engineer know he/she will most likely find the best and cheapest solution for you :)
This is what I was going to say--common to put the shear sheathing on the inside for a remodel, though it is not common to need sheathing on both sides. Those of us who do remodels, consider this option all the time where it makes sense. It's more involved if you are remodeling on a wood floor. Going for the resilient channel is great!
Where did you get your design/plans? I've been looking for design help on my ADU. Already got site plan and zoning approval. That's a great price, and smart design 👌
Awesome idea. Thank you for sharing. How do you justify actual cost valuation when the assessors office wants to do use market evaluation? We know it doesn’t cost $400 sq ft for a garage conversion. Please share.
Hello Diana that's a tough one. I don't know how the city works their numbers. The only way to find out the actual cost would be to call the assessors office in your county.
Why isn’t the shear wall installed on the outside?
thanks hector, great videos. unfortunately your resilient channel probably ins't going to work on a shear wall like that because there's only 3/8" between the metal face and the shear wall. so, when they drive the drywall screws into the resilient channel either they won't get enough screw behind the metal or they'll go into the plywood which negates the effect of the isolation provided by a properly installed channel because the screws will be making it one assembly. just a thought for next time.
I have a standard wood siding house.There is a thin layer of plywood on the frame of the house and a moisture barrier behind the siding.
Is the plywood attached to my studs considered my shear wall?
Sheathing alone is not necessarily a shear wall. It does provide some lateral load resistance but is not considered a "designated" or "designed" shear wall. The signs that a wall is a shear wall are a high-density nailing pattern between the sheathing and studs and large anchor bolts at the ends of the shear-wall embedded in the foundation. If in doubt it's best to have a structural engineer familiar with retrofits make a visit to review the structure and assess the condition.
I built a attached adu one year ago and we didn’t put shear walls and the city approved that.
What type of electrical boxes are those
What is the horizontal metal things that absorb sound on the walls?
It's a requirement on the plans. It's to reduce noice from one room to the other
Shear walls are designed by a licensed engineer, brace walls however are governed by the CBC or in this case CRC codes
Thanks for the videos..but why is your floor painted red?
Its covered with a waterproofing and crack prevention membrane called Redguard. The city inspector told me to install it before he signed off on my framing inspection. The cost for the product was about $150 and i installed it my self
I assume your shear walls go all the way up to the roof, not just up to the wall,, where ceiling joists are. All shear walls end at roof not just up to ceiling.
To the top of the top plate.
@reseller7 absolutely wrong. Shear walls or braced wall panels go from foundation to the underside of the roof sheathing. There will be some form of shear transfer
Hi Hektor, wanted to know how I can get a hold of you? Thanks again for the videos. They are really helpful. 🔥💯
Larry give me a call 818-564-5835
Hektor Castillo May I call you as well? Lol
A sear wall is composed of plywood or OSB. You garage already had sear walls when the home was built.
Yes it did. However to pass inspection I had to add shear walls because it was called out in the approved plans.
@@HektorCastillo Blame your wife. Plywood on the outside, then stucco is a shear wall. Your inspector could have had you change the plans.
Did you place insulation in back of the shear walls?
Yes i did. When building an ADU there will be an insulation inspection before its covered. The insulation has to be R15 for the wall an R30 for the ceiling. Right after the city inspector approves the insulation you can install the shear walls. However follow your plans in regards to where you need to install the shear walls.
Hektor, did you need to have the framing inspected prior to installing the plywood on top?
yes, I had to pass framing inspection
Hektor Castillo thanks! Did you install the plywood on the inside of the garage and drywall on top or did you screw the drywall directly to the studs?
@@paulg8252 I would not know that one. My contractor did all the labor.
@@paulg8252 You can install drywall on top of the shear panel (plywood), just screw the drywall in.
Can you post a pic of your plans?
what contractor did you use for this?
Do you drywall on top of the shear walls?
Yes we did 👍
What about fire rating?
There was no code we had to follow in regards to a fire rating for the shear walls. I did install fire resistance insulation and fire resistance drywall on a shared wall. The fire resistance drywall was a requirement per approved plans.
Shearwalls are way more than just structural ply. Shearwalls consist of HDs, a post and the ply. It’s a system. And you never ever install Shearwalls after rough electrical plumbing and hvac. You always wanna do all your structural work first, of course not if the shear is interior like on this video
I have learned so much from you. Thank you! Do you know if the County of LA is very different than the City of LA with planning codes and regulations.
They're different for sure - interested to hear Hektor's perspective. I gather that they're both pretty ADU-friendly.
Every county and city adopts its own version of the California Building Code. For example Long Beach will have an additional requirement for ADU and other city's would not. At the end of the day don't worry about this because the city will tell the designer what they need for your plans to get approved.
Master
Did you have to put plywood on your roof?
No we used the existing
Insulation in walls?
Insulation was installed after we passed the rough electrical inspection
@@HektorCastillo and hopefully passed rough framing, rough plumbing, and rough mechanical as well before insulation. If the windows are in the shear wall it should have blocking and nailed straps on top and bottom, if not it will fail.
What is the sqft of your garage?
It's 380sqft
@@HektorCastillo thanks
Whats the difference between the designer and architect
Typically, Designer is your interior design person, architect is a licensed person that can draw plans for commercial/residential and fully responsible for it. But it doesn't mean they are any better than designer if it's a small project, and especially residential project like ADU, room addition, remodeling, depends on your project. Regular house, remodel, addition, or ADU may not require architect at all, as long as the plan meets all the requirements base on the Residential Code or (CRC) California Residential Code.
Lol.. your framer should know this
Its not about the framer. The framer will do 🫡 what the plans say. Its about the ADU Designer.
Thanks for your video, it is very informative.
I've been designing and contracting residential structures in the LA area for over 3 decades. I have hundreds of plans submitted and approved.to build. Currently, I have three plans in plan check 1 is an ADU.
First of all, we all have to design for two lateral forces anywhere in the country,
1) wind and
2) seismic. Whatever is the dominant force becomes the control for the minimum loads.
There are two different methods of design allowed in the code.
a)By Design an engineer's design. BUILDING CODE(codebooks = IBC, LABC, CBC, and the NDS) Requires Engineering Calculations, typically using the NDS "National Design Specifications". (Shear panels with hold-downs for lateral forces and overturning forces) This will require (Hold-downs for overturning required)
b)Prescriptive Design. RESIDENTIAL CODE (Code bools = IRC, LARC, CRC) Braced wall method IRC[T602.10.2]
This looks like overkill for a one story ADU. What’s on the outside wall?
You almost built a cajon
🤣🤣🤣🤣 The contractor did charge you $600 for labor in california 🤔 I don't think so 🤣🤣🤣
Che hello, yes I hired him to do some corrections and he gave me a deal installing the shear walls. He's fully licensed and his info is available on my website. If you want to give him a call. Good luck with your project. heek.com