How many inchs in a 50" diameter circle?

[Russ Jerome]

I suck at math..I want t build a 50" accross (round) peice of tubing from sheet metal, how many inchs do I need?

[Silver350]

I dont know. hahaha I know How to find a Radius is that what you need.

[Lash]

pie x diameter


3.14 x 50= 157"

[-stew-]

LMGTFY...



http://www.wikihow.com/Calculate-the-Circumference-of-a-Circle

[Car Guy]

pie x diameter


3.14 x 50= 157"

Mmmmm, pie......:Hump


.

[SilverHorse]

LMGTFY...


Haha, i just had to google what the hell this meant!

[michelle]

Fire pit!

[-stew-]

Fire pit!


Circle of death!!!!! Maybe the base for a Thunder Dome for midgets?

[jbiscuit]

Velocity stack for the world's largest Dominator?

[Russ Jerome]

Fire pit!

Correct answer!!!

I have it dug a full 4' deep and now thanks to Pork I have its full of drainage stone, reinforcment ring for wall now....157" of pliable steel to clear grate :)

[michelle]

Correct answer!!!

I have it dug a full 4' deep and now thanks to Pork I have its full of drainage stone, reinforcment ring for wall now....157" of pliable steel to clear grate :)

You mean business! :stare

[Russ Jerome]

You mean business! :stare

My kids are serious about Smores, figured it will double a a smelter for my metalworking projects and pig roasts :)

[RanJer]

My kids are serious about Smores, figured it will double a a smelter for my metalworking projects and pig roasts :)

Name the time and place! :D

[Monstr913]

well what i was tough its pie x diameter - material thickness, but this was used for like 1/8 or thicker so

[That_Guy]

Name the time and place! :D

ill bring a few farm fresh chickens! i say cook out. :)

[GTSLOW]

Mmmmm, pie......:Hump


.

:rolf

[nismodave]

Thirsty Thursday, becomes Fire Pit Thursday!!

[Al]

If you go that thick, will you need a slip roll to get the sheet into shape?

[fivonut]

pie x diameter


3.14 x 50= 157"

and if you want to know how many inches are inside that circle it'd be

(diameter/2)^2*pi

and if you want to know how many inches to fil the entire hole it's the above formula * height.

[Russ Jerome]

If you go that thick, will you need a slip roll to get the sheet into shape?

I was thinking if the ring is only 12" high I could manage rolling 10ga by hand? The other option is simple steel/tin flashing and making several loops, rivet along the way. Need only control dirt from falling into pit during rain and keep the lannon stone steps from following dirt into hole.
http://t3.gstatic.com/images?q=tbn:ce4DU-i8JP-__M:http://www.southlandbrickandblock.com/images/firepit.jpg
Kinda like this but burried in ground to maintain the holes walls.

[Al]

I'd recommend that you see if you can form the sheet without sending it through a slip roll first. Try that the same way you would roll a sheet of paper. On its own, the paper has enough spring to maintain the roundness on its own. 10 guage steel is a little more than 1/8 of an inch thick. If you metal cannot be bent on its own, then I'd find a shop with a slip roll and have them form it for you. Labor should be 15 minutes for a project like that.

One technique I think you should try, assuming that you can work the metal, is to take a pair of ratchet straps and use them to get the metal into the round shape. Once you have an inch of overlap, drill some holes and send a few bolts through. Rivets would also work, but I would insist on a dozen 1/4-20 x 1/2 inch bolts will be a bit more user-friendly.

Also, I think you should make the sheet a few inches longer than the 157 inches mentioned earlier. This way, you will have about 1/4 to 1/2 inch of clearance around the grate. This will be useful if you install the grater after the sheet. This might also help you if the grate expands when it gets hot.


I was thinking if the ring is only 12" high I could manage rolling 10ga by hand? The other option is simple steel/tin flashing and making several loops, rivet along the way. Need only control dirt from falling into pit during rain and keep the lannon stone steps from following dirt into hole.
http://t3.gstatic.com/images?q=tbn:ce4DU-i8JP-__M:http://www.southlandbrickandblock.com/images/firepit.jpg
Kinda like this but burried in ground to maintain the holes walls.

Personally, I would recommend against using the flashing. That material is not very rigid to begin with and it might give you long-term issues. Once it gets hot, it will change shape on you.

[pOrk]

Russ, you ain't rolling 10 ga by hand buddy

[Russ Jerome]

I planned on oversizing it for an overlap for sure, pictured it tack welded to a beam at work and seeing what kind of damage I could do with the forklift. I've got plenty of torch's at work.
http://www.instructables.com/image/FUJRSIEFB11U62R/Lay-the-Courses-of-Stone.jpg


I'll look at 12ga at work wen, thought it was too light from mememory....weak memory anyway.

[DirtyMax]

We went to Pomp's and got a 36" diameter tractor wheel that had no lug plates on the inside so it's essentially a 36" steel ring. I know it's not 50" but it's plenty big. Price was right too... like $20 or something...

[Lash]

Russ....

I can roll it at work for you if you need me to.