There have been a few posts on this, but I don't think this has been properly addressed by the ACI.
In the ACI 318-19, there is a new table for calculating one way shear. Table 22.5.5.1 shows three formulas.
Formula (a) and (b) simplify to the familiar equation phi*2*sqrt(f'c)*b*d times...
I haven't spent much time with ASCE 7-22 yet. I was just made aware that the snow loads provisions are changing from a allowable measurement to an ultimate measurement. Similar to wind load revisions in previous ASCE-7 editions.
Load combination factors are changing:
The ASD factor is now...
For a two way flat slab on columns...
I am banging my head against the wall trying to understand the requirements here. I've been looking at this for hours and I'm going nuts. This is new to the ACI 318-14 as far as I can tell. In the past, shear reinforcing was not required at columns as...
It's been a while. I came across a (dumb) question that I don't know 100% know the answer.
In composite steel deck tables, values are given for a deck with no steel studs and a deck with 1 stud per foot. The values with studs are obviously higher.
In order to meet the "1 stud per foot"...
The existing warehouse drawings from 1966 tell me it was a 16J6. I want to verify the capacity from the SJI manual of the time.
I have a 1972 SJI manual which tells me 275TL and 224LL at 25'. Does anyone have an older one that would tell me 1966 info?
When I am working on a problem, I...
Let's say I have a 5-story building, 200'x200' in plan with a courtyard in the middle. The courtyard is 80'x80' and extends the full 5 stories and is open on top. The building is 60' deep on all sides. Basically a fat "tube" of a building.
How would wind pressures be applied the building? I...
This is for a project in Ocean City, MD. I don't know why they reference a 22 year old code. I can't find it anywhere. ebay, amazon, icc, ansi, nothing.
Does anyone have a link?
The full name is "Standard for Hurricane Resistant Residential Construction"
When I am working on a problem, I...
I have used Ram Steel recently and I am not fond of it.
The projects that I am working on recently are large steel transfer slabs supporting wood construction. They have a variety of line loads, point loads, etc.
One problem that I am having is that the loads need to be assigned a name...
Is it the Structural Engineer's responsibility to review and approve spray fireproofing reports?
A building official insists that it is. This is news to me.
I didn't specify it. I didn't review the submittal. There is a 3rd party inspector that inspects it and provides a report. In my...
I have a retaining wall along side a road where the county has requested a design for a vehicle impact.
I know IBC and ASCE much better than AASHTO. If this was an IBC load, it would be a 6k load at 1'-6" or 2'-3" depending on the year. But this is a public road. I'm not familiar with the...
I've spent the day trying to put together a lateral system for a large (400'x250') L-shaped steel podium. The podium is a composite steel system supporting 5 stories of wood residential. The structure is open on all sides, so I have been using a series of X-braces throughout the building. The...
IBC 2012 states "Balconies and Decks - Same as occupancy served". e.g. 40 psf for an apartment balcony
ASCE 7-10 states "1.5 times the live load for the occupancy served. Not required to exceed 100 psf" e.g. 60 psf for an apartment balcony
Has anyone come across this before? Which one should...
Long time lurker, first time poster
I have been in the residential construction field for over 10 years, I am a Structural P.E. and routinely I question some of the things that I have held as fact.
Where I have a large foundation step in a building - say a garage next to a basement in a single...
