Can someone explain to me 12.5.3 Length ldh in 12.5.2 shall be permitted to be multiplied by the following factors.....
I feel like I dont really understand 100% for factors a and b.
Not almost anymore! :-)
A lot of the equations on ACI318-05 use "/" as a divide symbol but the whole texts are italics. So the / looks like I in italics. For example look at 12.5.2. Another engineer asked me what I was and I was confused too for a min. I think the / should me more in an angle. It looks like...
ACI 318 says that vertical and horizontal rebar cannot be spaced more than 3X wall width nor farther apart than 18 in. Do you apply this on foundation on basement wall also? Is there an exception?
Not almost anymore! :-)
I have an existing one way slab concrete with 7x23" joists at 2'-3 o.c. with 3" slab. The client wants to install 2500 lb generator. I have done the analysis and it looks like the joist will be able to handle the load (not even close). Now, how would you mount this generator? I dont know how...
I went to this old warehouse that is now a night club. At the roof it has a dropped heavy timber every 16' spanning about 48 ft. The timber has a turn buckle (2" solid) about 26" from the top of the beam. Here is a snap shot. of the blocking holding this turn buckle underneath the beam. Has...
I have not been exposed to concrete design too much in the real world and I have general questions:
1. If I have a structural slab that is suppoted by 4 walls. The slab sits on the top of the walls and dowelled into the wall with bent rebars (one leg into the slab and one leg into the wall)...
I have a contractor that needs to drill three 1 3/4" diameter holes side by side on a W10x39. What is the rule of thumb or easy way to analzye this? The beam is almost 17foot long with distributed load and 3 point loads. Maybe reinforce the web where the holes are? What is the common way to...
I am really confused on building residential decks. What is the "proper" way to support a deck on expansive soil. People usually just dig a hole frost depth with sona tube, poor concrete and then put deck column on top of it.
Now, if I have a brand new constuction and the soil report is...
I hate to do this but I get mixed answers on this one thread I posted. The foundation forum is not as active as the structural forum. Can you guys help me?
thread256-200120
If I have a grade beam on drilled piers (residential with fairly tall crawlspace), Do I need to burry bottom of wall to frost depth? The main level of the house is a little high.
I have a project of a pop top project of an old brick house w/ basement. The soil report came back and it is only giving me 2000psf soil brg. max. I assume the footing is 16" wide. After I add up the loading I get 2800 psf of pressure. What do I do? What do most people do on pop top projects?
I do mostly residential so I dont detail a lot of steel connection. If you have a steel hip beam supported by a steel column 1/3 of the span. How do you support it? Do you put a steel stand off so the plates for the connections are flat? Or do you just bevel cut the column and put a plate in...
