Looking at earth retaining next to some process equipment with several pipe tie-ins. The solution would involve driving piles with a Vibro hammer right next to the equipment. What things should I look out for and what would be acceptable limits for such a situation? Thank you in advance :)
@JAE,
I am, and I agree, I have heard of all the methods mentioned, but few have heard of this.
Even the UK, another English speaking country, with differing methods of construction have heard of it. It's good to know what others are doing in the interest of progression in the industry.
Back...
@JAE,
Last sentence. This is right, the thread is about the pros and cons from the perspective of both the checking engineer and contractor.
If you haven't seen them I'm surprised. But now you have.
@Inginuity
This was design by an American using your ACI 318 Structural Concrete design codes.
@kootk
Cold joints are a problem. You would want to minimise the number if you can.
I would disagree with you about the structural aspect, if you have a joint, its a point of weakness, yes there...
@ussuri
Good Post! Absolutely correct.
Contractors pushed to avoid it because it's fiddly, they would rather slow at the second stage, getting credit for the first rather than install them, but it has more advantages than disadvantages. Re-work avoidance being the main one.
The thread is...
@kootk
I am surprised the number of guys that have never heard of them.
1, too many joints is at structural problem, especially within the tension zone(cold joints?)
2. The slab and kicker is monolithic.
3. See below basic textbook. This is a conventional method of construction.
@wallache the link above from civil engineer (under the pic) is presumed an American article, simply by the units of measurement.
However I would sayuntil you see it work, you will adopt this way for sure. Google concrete wall or column kicker to get an idea.
I've worked on many large concrete...
@Archie264,
The plinth is there mainly for alignment of the columns and something to butt the formwork against. It's very quick to use a plumb bob to get the verticality of the formwork thereafter.
It's not about the concrete mix, consistency or leakage.
@Archie264.
the thread was about the pros and cons of using kickers, feel welcome to add if you have anything to contribute regarding that.
To me, and this may be a local or national exception, a diagonal brace is usually called either a diagonal brace, (strut or tie, (tension or compression...
The tubes around the column are just polythene in order to reduce the concrete slurrey (cleaning afterwards). You have to remove this before the concrete sets once the kicker is poured and finished. The steel tubes are to assist for screeding (simple straight scaffold tubes).
We have saved a...
@hockie66.
Below is a pic to show you one being used so you can now say you have seen them being used.
I
Here is also another one for you! http://www.acivilengineer.com/2013/03/how-to-make-concrete-formwork-for.html
The above is just pros and cons. It is well known that contractors will...
This is a new thread based on this one that was closed. I felt that the answers given were not complete http://www.eng-tips.com/viewthread.cfm?qid=209154#post
Kickers aren't being used so much in construction today, a lot of new construction engineers are learning methods that can be more risky...
I have been given a plate load test to try and make sense of in preparation for a crane lift. The worst case load on the outrigger is 60Tons/ m^2 using a 2mx2m pad.
My initial observation was that the test has only been carried out to 30tons/m^2 (using a 450mm diameter plate) and we are loading...
