Internet #100321209

Model #65470075

Store SKU #285266

8 in. x 48 in. Concrete Form Tube

  • Makes pouring concrete footings and posts easy
  • Can be used for foundations, round columns and piers
  • Affordable time-saver for a professional finish
  • See More Details

Product Overview

The SAKRETE 8 in. x 48 in. Form Tube is designed for one-time applications to reduce the cost of pouring footings, round columns and piers. Pour concrete directly into the tube for a neat and easy form. This product is a cylindrical cardboard concrete form used for posts and pillars in above- or below-grade applications.
  • Single-use form is used when pouring concrete footings, columns, deck supports, fence posts and piers
  • Designed to allow the concrete to cure for 24 hours before stripping
  • Saves time and creates professional-looking finish
  • Easy to cut, place and secure
  • Moisture resistant to ensure weather or ground conditions will not affect your pour
  • Note: product availability may vary by store
  • Number of concrete bags required:


Info & Guides

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Specifications

Dimensions

Product Depth (in.)
8
Product Height (in.)
48
Product Length (in.)
8

Details

Concrete Form Type
Concrete Form Tube

Warranty / Certifications

Manufacturer Warranty
1 YR

Questions & Answers

63Questions27Answers

How much concrete does it take to fill an 8 in. x 48 in. tube?

Asked by Brad September 23, 2020
4
Answers

Thank you for your question. The amount of concrete you'd need to fill a 8 in. x 48 in. tube would depend some other factors, including the depth of you'd be filling the tube to. Oldcastle strives to provide the best possible products and customer experience, so please contact us at 1-866-256-7404 so we may gather more information and resolve to your satisfaction.

How much of the tub can be above ground level

Asked by BZ September 7, 2020
2
Answers

Any or all of the tube can be above or below ground level. The tube is cardboard that will rot and disintegrate over time, leaving the concrete.

how concrete to fill 8" tube four feet high

Asked by Bev September 2, 2020
2
Answers

Hello, for an 8" diameter and 4 feet high you need .052 cubic Yards which is equivalent to 3.1 60 lb bags or 2.32 80 lb bags. For the 8 feet high you need 6.19 60 lb bags or 4.64 80 lb bags.

Can you leave this form on the post after the concrete is poured or does it need to be removed?

Asked by Roman323 August 18, 2020
4
Answers

You can leave it or remove its just anesthetics you can just peel down to below grade, I just set mine so they were below grade, of course if your pouring piers you probably won't have that option.

Does it come in 18 inch ID 15 foot long

Asked by Anthony July 27, 2020
2
Answers

I think so but it only comes in 12' lengths.

Does it come in 16 inch OD diameter

Asked by Anthony July 27, 2020
1
Answer

You will have to go to the ProDesk and special order that size.

Can I use this concrete tube as the foundation for the 4 by 4s, where we would bury it 3 feet dee...

Asked by Nessa July 6, 2020
4
Answers

Go online and look for a site that can give load calculations for a footer. Width and depth is all depending on the weight you load on it.

Can this be used for 5X5X9ft(h) vinyl posts

Asked by Sam June 13, 2020
3
Answers

More details needed for a proper answer. If these are fence posts you will want to bury Part of them underground , 2 feet (24”) in my area. The walls of the hole in the ground will negate the need for the form tube. Form tubes are designed to support weight straight down. A fence needs lateral support ( side to side ; front to back . Getting part of the post anchored under ground is the goal. Also , check instructions on your posts. Some vinyl posts (hollow)are designed to slide down over pressure treated wooden posts. Good luck!

Are 9 of these tubes large enough for a small 12'X16' shed, or should a 12" diameter tube be used ?

Asked by Brent May 30, 2020
2
Answers

You should use whatever your local building code dictates.

Do I put all 4 tubes in the ground ?

Asked by Jw May 16, 2020
3
Answers

You should only need one tube. You can cut it to whatever length you wish all it does is hold the concrete in that shape. After concrete is set up you can cut the cardboard that is above ground and remove it. But make sure you get the air bubbles out while the concrete is still wet or it will look ugly!

8 in. x 48 in. Concrete Form Tube - page 2

Customer Reviews

  • 204 Customer Reviews
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Awesome product! Used for cat post housing & very easy to cut with razor knife!
Awesome product! Used for cat post housing & very easy to cut with razor knife!
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7
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diy project
Needed to make a smoke stack for my sons train bed. This worked out great for the diy project.
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5
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Ideal Form Tube For Setting 4x4 Posts
Quality :
4
Value :
4
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This form tube is easy to use and helps to simplify the process of setting concrete for posts or columns. The manufacturer provides printed instructions on the outside of the tube form. Most important is that this form tube which is made of treated cardboard must be completely dry prior to concrete being poured into it for the tube form to maintain maximum strength and integrity. The manufacturer also specifies the amount of concrete mix required per foot on the outside of the form tube to fill the length of the form tube. The diameter of the form tube is +/- 0.5 inch to make it cheaper and easier to ship several form tubes by nesting them inside of each other. I used three 80 pound bags of concrete mix to fill all of the 48" length of this 8" diameter tube form and had some concrete left over. It is always better to have some concrete left over then it is to not have enough concrete because concrete must be mixed properly and poured all at once for all of the concrete to bond correctly as one solid mass before the concrete sets. The 8" diameter of this form tube is an ideal size for setting 4x4 posts since the Strong Tie post bases recommend 2" of concrete on all sides of their bases. 8" diameter is also just large enough to be able to use a spade shovel to compact the concrete as it is poured into the tube form.
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Near perfect round, even short sections cut from long tube....
Near perfect round, even short sections cut from long tube.
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Besides being a great tube for making concrete posts i...
Besides being a great tube for making concrete posts i used these tubes for tunnels for my guinea pigs and they love it !these tubes come in various sizes for whatever you need my bunny also loved it
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Rating provided by a verified purchaser...
Rating provided by a verified purchaser
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We used this as a social-distancing aid for Halloween trick-or-treaters. We wrapped it with a str...
We used this as a social-distancing aid for Halloween trick-or-treaters. We wrapped it with a string of orange lights and strapped it with packing tape onto two sawhorses, one at the top of the porch steps and one at the bottom, and slid the candy down the tube into the children's waiting bags below. The kids (and the parents) loved the idea, not least because we were one of the only houses on our block that was giving out candy this year. So while I can't speak to its efficiency as a concrete form, I can absolutely say it worked a treat for our use.
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Perfect no issues very easy to use...
Perfect no issues very easy to use
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Really, I know 8" is "nominal" but 7.5 to 8.5"...
Really, I know 8" is "nominal" but 7.5 to 8.5" diameter? How can this be acceptable in the building trades?
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