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    Question for California PEs: PE as RIC for a Business — Legal and Compliant

    Hello everyone, I’m an EIT in California working primarily on residential structural design — additions, remodels, and small new construction. I am currently exploring compliant and legal ways to operate while I work under a licensed PE. Specifically, I would like to verify whether the...
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    Mixed Lateral System

    Hello everyone, I am working on a house that has two gables as shown on my sketch. One of them has large openings so I was thinking if I could use a mixed lateral system- steel OMF for the large openings and wood shear walls for the other part. The stiffer part, wood shear walls will attract...
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    Long Shear Wall

    Hi everyone, I am designing a 2 story house with a balloon framed stairway 23' high. The wall there is 4.5' so if I design it as a shear wall it exceeds the 3.5 ratio. I know it should have a lateral system but what can I use? Maybe hardy frames stacked together? Please help me with this...
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    Seismic Analysis for Trapezoidal Shape House

    Hi Everyone, I am designing a trapezoidal shape house and I wanna know how to get the reaction on the inclined shear wall. If I assume earthquake hits from either x or y direction then it's easy to find the reaction on that shear wall using the angle. But what if the earthquake direction is in...
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    Shear wall schedule and notes

    Hello everyone, Where can I find good shear wall schedule and notes? I searched online and couldn't find anything useful Thank you
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    Deck Knee Brace

    Hello everyone, I am designing a deck with knee braces. It's designed as a separate structure so there is a gap between the existing house and the deck. Because of this gap knee brace has to be connected to the blocking between deck joists, not to a beam. Please see my sketch to visualize this...
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    Truss Cut

    Hi everyone, I have a remodeling project and it's under construction now. The builders cut the existing truss bottom chord to place a 21' span beam where the wall used to be. The inspector wants approval for this. The beam was designed for ceiling loads since the architectural plans didn't...
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    Deck Seismic Analysis

    Hi everyone, My client is adding a deck to an existing 2 story house ( See the sketch attached). The city requires that we check existing house for additional load per IEBC section 1103.2. My plan is to do a seismic analysis of the existing building alone and then with the deck. After that we...
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    Attached Deck Seismic Analysis

    Hi everyone, I have a deck addition project and it's gonna be attached to an existing 2 story house. The plan checker is asking to check existing house for additional seismic load from deck. It says, "please justify (E) lateral force resisting system of house subject to additional lateral load...
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    Shear Wall Design for Wind

    Hi everyone, For shear walls that are short I know that we have to reduce capacity by 2b/h for seismic design. But, what if wind governs? I couldn't find any requirement for reduction for this case. Can you please help me find references? Thank you
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    Collector Element Design

    Hi, I have a question about collector design. I use ENERCALC to generate seismic base shear and force distribution, story shears. But ENERCALC has 2 level and story forces: Fx and Fpx. Should I use Fpx, diaphragm force to design collector elements? I think if I use it the collector diagram...
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    Plywood Span Rating

    Hello Everyone. I'm trying to understand what span rating is for a plywood but I don't get the right hand number. For example, if we have 24/0 or let's say, 32/16 I understand the left hand number means the span between joists across the long direction of the plywood but what is the right hand...
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    2 Stage Analysis

    Hello all, For 2 stage analysis, if we have a wood framed upper structure above a concrete podium I know that I have to treat the upper and lower parts as separate buildings. But do I add (R upper)/(R lower)x V upper to its base shear? In equation form I mean this: V lower = (R upper / R...
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    Different R Values

    Hello everyone, I have a hillside project that consists of wood framing over steel cantilever column system. My question is this: can I use R=1.25 for the bottom part and R=6.5 for the upper part? should I do 2 stage analysis or use one of the R values for both levels? Please see my sketch for...
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    sister beam design

    Hi Everyone. I am trying to design a cantilever beam sistered to main beam. My question is how should I set up the supports? fixed, pin at every bolt, or pins at locations where it sits on a wall and the last bolt location? Please see my sketch attached. Sorry if it's messy. I can make another...
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    Diaphragm question

    I have a small irregular shape building and need to design the shear walls. Can the highlighted shear line be one line or should I treat these two areas (1 and 2) as different diaphragms. In my opinion it can be one line with two different tributary areas (one diaphragm). Please see attached...
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    Existing wall footing depth

    Hi everyone. My project consists of adding a second floor to existing 1 story building. I was asked to check if existing footing can support 2nd floor addition loads. I wanna know if my calculations are correct. Please see attached and let me know your thoughts. Thank you so much in...
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    Steel beam to wood beam connection types

    I wanna know what types of connection types are there between wood beams and steel beams. I know one of the ways is to use a nailer with nelson studs on top of the steel beam with blocking and hang the wood joist/beam. Are there other methods? Thank you
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    Seismic R values for a covered patio with mixed, steel ordinary moment frame and CMU shear wall

    I'm designing a detached covered patio with steel ordinary moment frame and CMU shear wall. The rafters are supported by a steel beam on one side and a CMU wall on the other side (see diagram). So my question is what R value should I use to design the CMU wall and the steel frame? Thank you so...

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