All,
I had a discussion with a colleague about designing a raised ground level deck with a covered roof for 1-story single-family dwelling with a raised floor. The project has a ground sloping down away from the dwelling unit to about 3 to 4 feet from the deck to the ground at the edge of the...
It's legalizing existing unpermitted work, so I don't know if they are treated. But then again, I was thinking of proposing CMU retaining wall in lieu of existing wood, so it's not beyond the realm of possibility.
Apologies. I uploaded a new detail. Hopefully, this one works. Your statement...
Hi fellow engineers,
I have a project to legalize unpermitted work and questions I'd like to bounce with others. Owners have unpermitted wooden planters that doubles as retaining walls. There are two planters (see attached) with 36 inches height. Below are my concerns:
1. Due to decay, I don't...
I agree with MotorCity and Jae.
If OP is concerned, you can have alternate cross tie locations, i.e. provide one on the left and the bottom set of face reinforcements and then provide one on the right and the top set of face reinforcements the next.
The rule of thumb helps. I've mostly allowed ripping 2"~3" before, but not to this magnitude. Low reaction and minimal shear demand are why I'm even trying to determine if it's viable at all.
Shallower ply is doable. The beam sits on a post at the other end and is located in the middle of the...
Hi,
I designed a new 3.5"x11.25" ceiling beam in an existing house spanning almost 20 feet and the beam supports roughly 8 feet of ceiling tributary loads (10 psf of dead and live loads).
Initially, we were going to replace the existing ceiling beam with a new one and it would've been exposed...
A fellow engineer told me that you could design wood shear walls using the total shear design method. Every shear walls designed with equal unit shears based on the story shear.
I always thought that wood shear walls need to be designed with a tributary method based on the flexible diaphragm...
It seems like the stiffness check approach is I need to do. If the initial design load is within 5% of the stiffness based re-evaluated design load, then I'll consider the design to be fine.
Thank you Shotzie, jdgengineer, jayrod12, and msquared48.
I have a plan check correction about using the wood shear walls and pre-approved panels such as strong walls on the same line of resistance.
The plan checker believes that "the combinations should not be used as the stiffness between them is unknown and questionable."
I believe the question to...
I have a project where hillside ordinance is applied. One side of the building is fully day-lighted (T.O. soil and T.O.S. at the same elevation) and the other side is retaining soil up to 8'-0" height. I cannot determine if the I have to assume the base level diaphragm at the roof level (at...
Typically, I separate the bending stress and shear stress as they are applied in a different direction. Bending is just a glorified tension-compression within a cross section (in&out of cross-sectional plane), but the shear is in a planar direction.
I do use combined stress by using square root...
Hello everyone,
The section 21.9.2.2 of ACI 318 dictates "At least two curtains of reinforcement shall be used in a wall if a [factored shear demand] exceeds 2Acv(lamda)sqrt(f'c)." This obviously applies to concrete shear wall designs.
Is there a similar limitation to masonry shear wall...
