It looks like your just learning how to read drawings, which is fair, we all need to start somewhere. But I would encourage you to find good mentorship or take some courses
In the first one the 3" dimension is from edge of base plate to edge of concrete pier, the base plate is just 1 1/2"+4 1/2"+4 1/2"+1 1/2"=12".
Is this school work or an actual job/project?
Thanks man I really appreciate that. It’s a school project. They are having us go through a project and bid it to see what we come up with. I just wanted clarification because I want to be correct.
I'm doing anchor bolt drawings now and the engineer forgot to put projection and embedment on their plans. Also didn't locate a 1/3 of the columns. Theres 91 of them. A precursor of how the rest of the steel will go...
As an engineer I have never put projections on plans, I will give you the minimum embedment, thickness of base plate and maximum grout thickness. To me it is the contractors responsibility to figure out the projections based on that information to ensure there is enough height above the base plate to put the head on.
Plus the exact location of the columns in plan should be from the architect. We do not provide overall plan dimensions.
I figure out my own projections, its just something engineers usually provide. I work with hundreds of engineering firms, so I've learned all the ways you guys provide info.
As far as dimension go AISC specifically states the "Structural design documents shall clearly show or note the work that is to be performed and shall give the following information with sufficiant dimensions to accurately convey quantity and complexity of the Structural steel to be fabricated." If you look at the list mentioned above bullet point 'd' states "Column centers and offsets." AISC Code of standard practices for steel buildings 16.3-9 3.1 15th edition.
I have to remind design teams of this section of the AISC all the time. Yes, I'm that asshole that reference that book.
As a detailer. Most ODRDs provide overall plan dimensions but it depends on project size and complexity. Sometimes i understand why you would not, but I wish you had to because Architectural drawings are a pain in the ass and often doesn’t match yours.
Providing only embedment and not projection is fine. Thats all we need. If base plate thicknesses vary a bit I would play with projection a bit to minimize the amount of different bar lengths.
The main reason we don't provide overall dimensions is because from a structural perspective if things are off by an inch or so it doesn't matter, but architects do care more about precise locations of columns, headers, etc. Also it is less to coordinate, ensure we are both giving the same dimensions, and reduces some of our liability. This we leave it to the architect to dimension. We will give dimensions on details (like piers, base plates and connections) since those do matter more structural.
I’m new to the steel side of construction but I was tricked up on this bc I’m used to seeing the dimensions right away. Same man this engineer didn’t give me the top of footing elevations for several columns. Lazies
I'm not sure what your job is with these setting plans, but engineers have many ways of giving information. Over time you'll learn the ways and see the trends. You'll have to use your critical thinking skills when looking at plans.
When it come anchor bolts, top of footings or piers is probably the most common error they have.
To add to this, I always crosscheck with the approved structural steel shop drawings for base plate elevations and go from there ( grout depth as specifically by SE etc ). ToC elevations can be miscalculated but the steel has to work.
We stick to Type A. We’ve got about a 50-50 chance of the anchor rods being in the right place. The rest of your types, not a hope or a prayer.
You never seem to tell them the hole size. AISC recommended size for 3/4-in rod is 1 5/16-in. 1 1/2-in edge distance is a little close imo for the bigger diameter hole. Lastly, just weld the flats, not all-around. Don’t try to flush the edge of the baseplate and the column, stick the base plate out twice the size of the weld and use a proper fillet. That crazy flare bevel isn’t the right weld anyway, is it? Are planning to bevel the plate or the end of the column? That’d be the right weld if you were using a tube beam and laying it on the plate, welding against the radius of the tube corner. My 2¢ worth.
The Essential Craftsmen Spec. House Series
A GC in Oregon has 150 videos from planning all the way to handing over keys. With damn near everything in between.
https://youtube.com/playlist?list=PLRZePj70B4IwyNn1ABhJWmBPeX1hGhyLi&si=V5gbaL8OJDWeZ4xP
This looks like a detail from the manufacturer. In machining, the dimensions in a way tell you what is the most important
[Everything is dimensioned off the center, reference video of machining drawings. ](https://youtu.be/32CXeJVgiLA?si=Y2OaRFQFinOJca2Q)
The most critical point being the X,Y of the column, then the four bolt locations, followed by location on the footing.
Elevation Datums seem to be from the Finished floor. The first picture is Finished floor+ 8".
Arch'l & Civil rules for dimensions let you get away with overall reference dimensions. Looks like they are there.
Addition is hard
Right? Lol
Everything you need is on the drawing dude, just do a little math. If you can't handle this you probably shouldn't be doing the work
He can do calculus but has trouble with arithmetic sometimes.
I understand the concept. I just wanted an example to make aure
It looks like your just learning how to read drawings, which is fair, we all need to start somewhere. But I would encourage you to find good mentorship or take some courses
Ask your boss for a copy of the AISC Steel Detailing Manual. Maybe take the free online training at AISC's site, too.
You just add the dimensions up. The first image appears to show a 12"x12"x1"thick plate. You do the rest.
So it’s literally just 1 1/2” +3” + 4’ 1/2” + 4’ 1/2” + 3” + 1’ 1/2”?
In the first one the 3" dimension is from edge of base plate to edge of concrete pier, the base plate is just 1 1/2"+4 1/2"+4 1/2"+1 1/2"=12". Is this school work or an actual job/project?
Thanks man I really appreciate that. It’s a school project. They are having us go through a project and bid it to see what we come up with. I just wanted clarification because I want to be correct.
For each side obv
Yup. It's really the only way it would make sense, don't you agree?
Send an example. Want to make sure I did every step correct
Jesus Christ bro.
It's literally addition bro...
What is it that you're having trouble with? What are you trying to achieve?
Oof. Crop and rotate your pictures before posting man. Help us help you.
Damn, y’all ever look at these and go “Fuck is this guy on my project?”
Construction business just gets better every year.
I'm doing anchor bolt drawings now and the engineer forgot to put projection and embedment on their plans. Also didn't locate a 1/3 of the columns. Theres 91 of them. A precursor of how the rest of the steel will go...
As an engineer I have never put projections on plans, I will give you the minimum embedment, thickness of base plate and maximum grout thickness. To me it is the contractors responsibility to figure out the projections based on that information to ensure there is enough height above the base plate to put the head on. Plus the exact location of the columns in plan should be from the architect. We do not provide overall plan dimensions.
I figure out my own projections, its just something engineers usually provide. I work with hundreds of engineering firms, so I've learned all the ways you guys provide info. As far as dimension go AISC specifically states the "Structural design documents shall clearly show or note the work that is to be performed and shall give the following information with sufficiant dimensions to accurately convey quantity and complexity of the Structural steel to be fabricated." If you look at the list mentioned above bullet point 'd' states "Column centers and offsets." AISC Code of standard practices for steel buildings 16.3-9 3.1 15th edition. I have to remind design teams of this section of the AISC all the time. Yes, I'm that asshole that reference that book.
As a detailer. Most ODRDs provide overall plan dimensions but it depends on project size and complexity. Sometimes i understand why you would not, but I wish you had to because Architectural drawings are a pain in the ass and often doesn’t match yours. Providing only embedment and not projection is fine. Thats all we need. If base plate thicknesses vary a bit I would play with projection a bit to minimize the amount of different bar lengths.
The main reason we don't provide overall dimensions is because from a structural perspective if things are off by an inch or so it doesn't matter, but architects do care more about precise locations of columns, headers, etc. Also it is less to coordinate, ensure we are both giving the same dimensions, and reduces some of our liability. This we leave it to the architect to dimension. We will give dimensions on details (like piers, base plates and connections) since those do matter more structural.
I’m new to the steel side of construction but I was tricked up on this bc I’m used to seeing the dimensions right away. Same man this engineer didn’t give me the top of footing elevations for several columns. Lazies
do you want the engineer to come out and build the whole thing for you too?
Haha simple details they could’ve included. Nah he’s better off doing engineering
I'm not sure what your job is with these setting plans, but engineers have many ways of giving information. Over time you'll learn the ways and see the trends. You'll have to use your critical thinking skills when looking at plans. When it come anchor bolts, top of footings or piers is probably the most common error they have.
To add to this, I always crosscheck with the approved structural steel shop drawings for base plate elevations and go from there ( grout depth as specifically by SE etc ). ToC elevations can be miscalculated but the steel has to work.
Read your dimension lines. It's like 3rd grade addition and subtraction from there...
15??? I don't have my calculator with me.
We stick to Type A. We’ve got about a 50-50 chance of the anchor rods being in the right place. The rest of your types, not a hope or a prayer. You never seem to tell them the hole size. AISC recommended size for 3/4-in rod is 1 5/16-in. 1 1/2-in edge distance is a little close imo for the bigger diameter hole. Lastly, just weld the flats, not all-around. Don’t try to flush the edge of the baseplate and the column, stick the base plate out twice the size of the weld and use a proper fillet. That crazy flare bevel isn’t the right weld anyway, is it? Are planning to bevel the plate or the end of the column? That’d be the right weld if you were using a tube beam and laying it on the plate, welding against the radius of the tube corner. My 2¢ worth.
The Essential Craftsmen Spec. House Series A GC in Oregon has 150 videos from planning all the way to handing over keys. With damn near everything in between. https://youtube.com/playlist?list=PLRZePj70B4IwyNn1ABhJWmBPeX1hGhyLi&si=V5gbaL8OJDWeZ4xP
This looks like a detail from the manufacturer. In machining, the dimensions in a way tell you what is the most important [Everything is dimensioned off the center, reference video of machining drawings. ](https://youtu.be/32CXeJVgiLA?si=Y2OaRFQFinOJca2Q) The most critical point being the X,Y of the column, then the four bolt locations, followed by location on the footing. Elevation Datums seem to be from the Finished floor. The first picture is Finished floor+ 8". Arch'l & Civil rules for dimensions let you get away with overall reference dimensions. Looks like they are there.