I live in a small 3 story building in Brooklyn NY. I've noticed the building will shake a little bit every now and then when we moved in. I figured it was probably the big trucks that drive nearby (we live next to a gas station). Also for context we did have that 4.8 earthquake earlier this month but I felt the occasional shaking even before that. However this morning I woke up around 5:30am and it's been shaking multiple times a minute which is a lot more than l've noticed before. I have big mirrors that lean against the wall and I can hear and see them shake so there's definitely a vibration. This building is very old (not sure exactly how old) and I'm getting worried it's going to collapse or something. Am I being irrational?

Si tengo una viga que sus solicitaciones son grandes en el nudo, puedo hacer llegar refuerzo de ambos lados del nudo, para suplir las solicitaciones alrededor del nudo, quedando como un traslapo muy largo?
*ver refuerzo inferior*

I need to access fib Bulletin 94 - Precast Concrete Bridge Continuity over Piers for my thesis. Can anyone help me with that?

Assistant Structural Engineer

Greetings to all. I'm a structural engineer and thought of writing to ask if our experienced seniors here could allow me to practice under their mentorship. I have 1 and half years of experience as an assistant Structural Engineer and would like to practice more and learn from many experienced engineers. I can design steel, concrete and timber structures but would like to do it under check from seniors as I wait for my registration as a PE. I have samples I have done before which I can share for initial evaluation if need be.

If I want to use approach for designing column subjected to moment and axial load

I want to take P/2 + Moment

Now if I have Pu = P/2 + M = 600 kN as example

And I have 450mm x 450mm column what are the procedure to get the reinforcement that can resist Moment in let say X-Axis, M2

A 1000usg tank on a 11ft x 5ft one way slab.

1/2inch rebar at 8 inch centers

Sufficient?

could any structure engineer share his work experience whether you are a junior or senior, and what are the salaries range for certain experience in the netherlands?

I'm not sure this is the best sub but about a year ago I graded all around my home, extended all the gutters and installed the sump to the weaping tile properly (pervious install was a joke) The basment is noticeably dryer. However, I am noticing some settling in the home. I needed to fix the water management and I'm sure the settling is due to this but should I worry or when should I worry?

Hi all. I’m not sure what to call the vertical 2x4 that’s bowed out in the picture but I know it needs fixed.

My thoughts are either small relief cut and sister stud or sandwich it with some carriage bolts.

Any suggestions are appreciated.

I recently moved into a new building in the Mott Haven section of the Bronx and I notice the water in my bottle moving a bit. I do live near a couple of construction sites and a subway line. The loop on the subway isn't in use this weekend so that can't be it. I also have a crack from my bedroom door frame up to the ceiling about 7 inches long. Can anyone offer some insight into what's could be going on.

Opened up a wall to move a doorway and am hoping for some thoughts on these studs.

Quick background, wall is on center-line of house, beam made from 3 2x10s running the full length on the center-line over lally columns in basement. 3 lally columns in the basement every 9'. Assuming both ends of this wall are load bearing, load bearing every 12' or so on main floor. Believe there is a beam in attic, but would be under blown in insulation. Home was built in the last '60s.

The right 2x4 was the left end of an opening of a door I want to relocate. Is the center 2x4 load bearing and the two sides ones are just to space out the doors or are all three load bearing?

Ideally, I want to remove the right 2x4, but i think there is also enough room to sister it in against the center if that would be better.

Also, what do you make of this 2x4 in the ceiling? I'm assuming the house was built with the wall going to the end of the header 2x4 and was later renoed and another (poorly built) wall was added to separate the space into another bedroom and hallway probably 15-20 years ago. Can I remove that? It's certainly not being supported.

Appreciate the help