how to hang Rebar (engineers welcome)

Is there any difference as to engineering prefernce when it comes to erecting rebar, verts 1st or hortizontals 1st?
plans show 2″ clear from outside of wall. the way it is drawn it shows verts 1st then horizontals. when done that way you have to suspend each vert individually before the horizantals go on. if you go with the horizontals 1st then you only need to set nails to hang off of every 4′ to 6′ or so, then hang the verts off the horizontals.
we did the 1st couple walls horizontals 1st, and the engineer passed it without comment. they got poured, and we now have a debate on site as we start the next set of walls.
anyone know if it makes a difference?
Replies
I've usually set the verticals into the ground and then hung the horizontals from them. You can leave them a bit long and actually drive them into the ground with a hammer to stabilize them.
banging them into ground is a big no no.
supposed to be no ground contact, as it creates a direct path for moisture and rusting out the rebar.
(not sure where you live..maybe you live in someplace like arizona desert where code may be different then wet region of BC)
Edited 10/25/2006 2:16 am ET by alrightythen
and actually drive them into the ground with a hammer to stabilize them.
you can't be serious???
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming<!----><!----><!---->
WOW!!! What a Ride!<!----><!---->
Forget the primal scream, just ROAR!!!
lol :D
saw yur post aterwards..
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming<!----><!----><!---->
WOW!!! What a Ride!<!----><!---->
Forget the primal scream, just ROAR!!!
you could accuse the bar of some dasterly deed and a lynchining party will be right along..
Lapun seems to be yur answer man...
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming<!----><!----><!---->
WOW!!! What a Ride!<!----><!---->
Forget the primal scream, just ROAR!!!
More information - are the bars hooked or straight?
- is the wall based on earth or earlier concrete?
- dimensions? (in ft/ins yet)
- how many more to pour?
I would like to help.
Lapun.
you asked....here comes..
- are the bars hooked or straight?
both...all verts will be married with a hooked bar into footing, where we are tying into existing footings vertical dowels are epoxied in.
does that have an effect, one way or another?
- is the wall based on earth or earlier concrete?
some walls are ones sided forms against concrete wall
some are formed with blind ties against block walls
some will retain earth.
some will be CC partition walls
- dimensions? (in ft/ins yet)
well various.....many various....if it makes a difference I will gladly list them. does it make a difference? as far as my question goes.
- how many more to pour?
lots... I would have to go count.
Thanks I look forward to your insite. and if you need more info let me know.
PS what is your background or area of expertise?
Edited 10/25/2006 2:37 am ET by alrightythen
Edited 10/25/2006 2:39 am ET by alrightythen
Hey, don't you sleep or what?Thanks for the prompt and serious responses.You've got it made. With hooked bars you can organise a temporary horizontal at the top upon which you can engage the hooks of the verticals. Then you can tie the bottoms of those vertical;s to the starter bars in the foundations.By hanging the horizontals on the outside of the verticals ( next to the formwork) you can control the specified cover, and at the same time,
make the drop when pouring with minimum separation.When the pour is around 75% of the required height,and vibration has settled the bulk of the placed concrete, then remove the temporary
horizontal.Then proceed to the completion of the pour, confident that the reo will not slump.Dimensions are only significant if your pour is five feet or higher,
when a pouring window will be necessary.I hope you find these suggestions helpful.Lapun.
lol...not sure where you are but I'm on the west coast..I would be three hours behind you if you're in the east. ...in which case I should be asking you about you're sleeping habits :)
I think we have terminology confused. our bars are not what you might be calling hooked. the verts are straight. but are combined with "L" shaped bars into the footing.
By hanging the horizontals on the outside of the verticals ( next to the formwork) you can control the specified cover, and at the same time,make the drop when pouring with minimum separation.
I think you are saying the verts are closer to the form face. which, with your explaination makes sense .
you have some different practices in your area it sounds like... the 1st walls were 15' in height with no pour windows and they turned out excellent. current form is at 19' with another one even taller that will get done in 2 stage pour.
I've also formed many walls well above 5' I have never made pour windows. most common is 8' to 12' basement forms, but have also done up to 20' high foundation form.
Thanks for your resonse
Our wires are indeed crossed. I live on the east coat - of Australia.
That would explain both the time and language/trade practice differences.If your BI is happy with 19ft drop, who am I to quibble? Perhaps that is why I sought dimensional information.In seismic zones a maximum lift would be 10 feet. In anybody's situation
control over formwork at the height you are pouring would be a major factor.Let me know how it goes.Lapun.
Aussie eh...2 of the guys I'm working with are Aussies...They both experinced fellas 10 years older than I am..I'm 37. Man I love hearing em talk...They talk fast though so I gotta take my ear plugs out when they're talking to me.
as far as the drops I'm not in charge of that...they're going ahead with the 19 footer..the 14 footer went very well with an 8' slump.
I will keep you posted.
thanks again for your insights mate.
PS what is your background or area of expertise?The answer is a story about fifty years long.The bit you are interested in says actual building,
contract supervision, building inspection and project
management of RC & steel multi storey construction
in seismic zones - work has been tested in 7.8 Richter
events without damage.Now retired.Lapun.
Welcome Lapun...
great posts..
BTW.. could ya enter some basic data in yur profile..
Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming<!----><!----><!---->
WOW!!! What a Ride!<!----><!---->
Forget the primal scream, just ROAR!!!
All in good time, mate, all in good time.
Right now I'm heading out with my girl!Lapun.
"Right now I'm heading out with my girl!"U retire young down under
Welcome to the Taunton University of Knowledge FHB Campus at Breaktime. where ... Excellence is its own reward!
At IMERC's request I updated my profile, and since you are one
of the earliest BTs, I reckon your post must be somewhat tongue-in-cheek.Any partner who will stick through forty years of remote locations
involving international removals and brit colonial environments
qualifies her to be "my girl". At least, that's how I see it.Perhaps it doesn't fit in with your earlier concept of a "lapun"?How about a smiling 'Whitegrass'?
well.... they passed and poured the next walls...all went very well...one more tall wall left 20 footer. then whole bunch smaller walls....
I had to pull myself off site, to catch up on some other jobs, I might get back there if I catch up in time. one of the guys was trying to convince me that wall is stonger with the verts closer to outside, I just didn't buy it....what you say makes a whole lot of sense about the segregation issue.
Glad to hear of continuing success.One of the features of working relationships within the industry is the
beneficial interaction between engineers and experienced technicians.
Both ride shot-gun on each other, and both learn in the process.Say Hi to your down-under mates for me.Lapun.