Quick Questionaire

 
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Old 01-04-2017, 02:15 PM   #1
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Quick Questionaire


those of you in site utilities, or concrete work, please take the time to answer these questions. if you would, quote this post, and answer behind each question. thanks in advance.

in south dakota, our typical drop inlets/catch basins (2' x 3') inside, (3' x 4') outside or (3' x 4') inside, and (4' x 5') outside. my travels around the united states, i've seen tens of thousands of these.

#1. do you cast the inlets in place?

#2. do you buy your inlets precast from an outside vendor?

#3. do you precast at your own shop site and haul to site and install?

#4. those of you that cast in place, how much would you estimate your forming costs are? DO NOT include the cost of the concrete, or rebar. PLEASE INCLUDE your labor, plywood, screws, nails, dump fees for used/damaged form plywood, etc. i'm just asking for an off the top of your head number here, please waste no time looking up this for me!

#5. after stripping the inlets, do you attempt to save any of the plywood, etc, or just throw away and start with new forming material.

#6 if you try to save it, what percentage roughly are you able to reuse?

thank you so very much for your time helping me with this!
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Old 01-04-2017, 04:29 PM   #2
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Re: Quick Questionaire


Quote:
Originally Posted by dayexco View Post
those of you in site utilities, or concrete work, please take the time to answer these questions. if you would, quote this post, and answer behind each question. thanks in advance.

in south dakota, our typical drop inlets/catch basins (2' x 3') inside, (3' x 4') outside or (3' x 4') inside, and (4' x 5') outside. my travels around the united states, i've seen tens of thousands of these.

#1. do you cast the inlets in place? No.

#2. do you buy your inlets precast from an outside vendor? Yes.

#3. do you precast at your own shop site and haul to site and install?
Tried it once & it was not cost effective.

#4. those of you that cast in place, how much would you estimate your forming costs are? DO NOT include the cost of the concrete, or rebar. PLEASE INCLUDE your labor, plywood, screws, nails, dump fees for used/damaged form plywood, etc. i'm just asking for an off the top of your head number here, please waste no time looking up this for me!

#5. after stripping the inlets, do you attempt to save any of the plywood, etc, or just throw away and start with new forming material.

#6 if you try to save it, what percentage roughly are you able to reuse?

thank you so very much for your time helping me with this!
Hope this helped.

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Old 01-04-2017, 04:50 PM   #3
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Re: Quick Questionaire


sure does griz, but #6 & 7 are really important to what i'm doing here. you just strip and throw? or try to reuse parts of it on the next structure?
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Old 01-04-2017, 05:06 PM   #4
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Re: Quick Questionaire


I think this is probably a regional answer. I've been on construction sites of one kind or another here in this little part of Southern IL for the last ~20 years and I have never, ever, seen a cast in place inlet or basin.

Every great once in a while, when site conditions just won't allow for anything standard, I might see a cast in place outlet. Very, very rare in this neck of the woods.
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Old 01-04-2017, 05:56 PM   #5
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Re: Quick Questionaire


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Originally Posted by XJCraver View Post
I think this is probably a regional answer. I've been on construction sites of one kind or another here in this little part of Southern IL for the last ~20 years and I have never, ever, seen a cast in place inlet or basin.

Every great once in a while, when site conditions just won't allow for anything standard, I might see a cast in place outlet. Very, very rare in this neck of the woods.
You'd rather order mud and grout the pipes in?

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Old 01-05-2017, 09:45 AM   #6
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Re: Quick Questionaire


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sure does griz, but #6 & 7 are really important to what i'm doing here. you just strip and throw? or try to reuse parts of it on the next structure?
Duh, I mean 5 and 6

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Old 01-05-2017, 10:55 PM   #7
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Re: Quick Questionaire


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Duh, I mean 5 and 6

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In regards to 5 & 6.....

probably 35 years ago since trying to form a DI.

but lots of recent experience using plywood to form block outs for columns etc....

never had much success trying to reuse small pieces of plywood in a form. Even using CDX or Marine grade the smaller pieces are difficult to remove from the form without damage. Form release helps some but not great.

Due to labor spent trying to save form pieces I determined it is not worth trying to reuse smaller plywood pieces. The few that may fall apart at your feet tend to have softer edges and can make it frustrating to use on the next form.

Maybe in your case have aluminum form pieces made up????
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Old 01-05-2017, 11:09 PM   #8
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Re: Quick Questionaire


Going to hug a pillow, will pm you tomorrow

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Old 01-09-2017, 05:57 PM   #9
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Re: Quick Questionaire


Always order from outside vendor. Never have time to cast in place.
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Old 01-10-2017, 02:54 PM   #10
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Re: Quick Questionaire


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Always order from outside vendor. Never have time to cast in place.
Jason, you're still forced to either mix on site, or call for ready mix for your openings. some engineers allow just grouting pipes in. here, if precast, they want a substantial crown/collar poured around the pipes.

a DI with 2 openings will take a wheel borrow full per opening.
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Old 01-12-2017, 12:42 PM   #11
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Re: Quick Questionaire


Reason for this. I'm working with local plastics extruding company.

Whether I buy precast, or pour on site, I still have to call for ready mix.

We're trying to put together 20 foot long plastic forms for the most common sized drop inlet sizes.

Cut to desired height, leave in place, no stripping.

It's a dual edged sword. Buy precast, and pray they meet all the desired elevations, call for ready mix and pour your crowns, or pour in place to the immediate size required.

My goal here was to find out how many of you wood use a product like this if you could pour and leave.

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Old 01-16-2017, 12:22 AM   #12
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Re: Quick Questionaire


I'm still trying to figure out exactly what you are talking about. Storm sewer?? Do you have a picture of the basin detail?
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Old 01-17-2017, 12:19 PM   #13
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Re: Quick Questionaire


I have no detail here on phone.

If you've done very much municipal storm sewer work, you'd agree most basins are 2x3, or 3x4.

What I'm working on is hopes that whether you typically cast in place or precast, this will save you a step and put more money in your pocket and give you more control on the sequence of the job.

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Old 01-18-2017, 09:58 PM   #14
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Re: Quick Questionaire


Dayexco: My home town manufactures the FORMS to cast concrete pipes and tubes...

Have you considered using vertically placed concrete pipes of various Diameters and lengths? man hole caps, Kerb drain caps etc.....

Around here they come with beveled male and female ends. Democrat ends are special order.....

many have voids where the horizontal tiles run into them, the bottoms are 'grouted' with concrete sloped to please the CE.....

A 15 foot deep storm sewer connector might have two 10'' inlets and a 16-18" outflow in the lowest 42" pipe x 6', another 6' tall 42" diameter. then a short pipe, with a bushed down end hole with several 4-6" dough nut adjustment collars to place the cast iron manhole at grade.

You can see how using "horizontal' pipe could really shrink up the # of pieces necessary to build a sewer system, sanitary or storm....

My uncles finished their days as Union masons in Chi town during the Carter Reagan years patching thousand of brick manholes to utilities vaults.

I even built a few solid concrete block street sewer drains as an apprentice....

I can't imagine a excavator making any money forming sewer boxes, unless they had to fit in tight spaces/brownfield work?

maybe a super rush job... or massive design-build Fubar.

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Old 01-20-2017, 12:08 PM   #15
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Re: Quick Questionaire


It was never my choice as it came to DOT jobs, they were built as specified.

Per little south dakota specs, and what I've seem from other states standing RCP on end as a catch basin, doesn't cut it.

My idea is to save some steps.
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Old 01-20-2017, 06:32 PM   #16
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Re: Quick Questionaire


Only order precast. Have used RCP in private jobs once in a great while; but only if replacing an existing structure and have a hard time getting invert elevations accurately marked.


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Old 01-25-2017, 09:16 PM   #17
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Re: Quick Questionaire


I understand now. It's precast here, our precast companies core them to plan specs for us with no need for me to give them dimensions. We also build the short guys with brick and block.
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Old 02-07-2017, 10:30 AM   #18
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Re: Quick Questionaire


Update, we have a cardboard manufacturing company here that assures me they can manufacture a paraffin coated cardboard to sizes needed (to make it strip easy and not be damaged if rained on) and will withstand the pressure of the wet concrete with proper wall tires and shoring.
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Old 02-07-2017, 10:42 AM   #19
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Re: Quick Questionaire


Quote:
Originally Posted by griz View Post
In regards to 5 & 6.....

probably 35 years ago since trying to form a DI.

but lots of recent experience using plywood to form block outs for columns etc....

never had much success trying to reuse small pieces of plywood in a form. Even using CDX or Marine grade the smaller pieces are difficult to remove from the form without damage. Form release helps some but not great.

Due to labor spent trying to save form pieces I determined it is not worth trying to reuse smaller plywood pieces. The few that may fall apart at your feet tend to have softer edges and can make it frustrating to use on the next form.

Maybe in your case have aluminum form pieces made up????
this has been my experience with trying to save the plywood too
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Old 02-07-2017, 11:05 AM   #20
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Re: Quick Questionaire


Imagine how nice this would be.

You buy the forming in 20 foot lengths, cut off height you need, pipe openings you need, all with razor knife or scissors, and throw it away when set.

I think we're onto something here.

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