| |
|
|
bridge for Island
I used 4' 1/4 wall square tubing for my bridge. My island is about 40 x 40 and the span is 28 feet. I had a local pipe bending company do all the bending for the arch which gives it about 2' rise.
|
|
 Add Photo
Bookmarks: |
|
|
|
|
bridge for Island
SG,
Okay, it has been over a month and you don't have snow for an excuse. So is the bridge built yet?
|
|
Add Photo
Bookmarks: |
|
|
|
|
bridge for Island
Cheezy
What weight limit do you think your bridge is good for?
How did you make the attachments for the decking? Do you have any specs?
KT
33' 12" X 12" treated timbers are very hard to find have to be special cut, and they want an arm and a leg. I was looking for the cheapest way or the less expensive way to have a bridge. Right now I have the cheap push lawn mower on the Island that should make Ann happy. You should have seen that show with the lawn mower in the boat and the off load evolution in that wet red clay. My wife was in shock and awe after putting eyes on me. I should have taken pictures you would have loved it. I hope to have the beams ASAP.
|
|
Add Photo
Bookmarks: |
|
|
|
|
bridge for Island
If either of you is interested, I can tell you what the load capacity of the arch is with a little more information. With an untied arch, the foundations could govern the capacity of the arch. If the arch is tied at the bottom, the capacity is internal to the arch structure.
If you let me know if the arch is tied, and if not what the foundations are, we could determine the capacity.
Maybe someone did it for you before it was built.
|
|
Add Photo
Bookmarks: |
|
|
|
|
bridge for Island
I am intrested but dont have the info.
|
|
Add Photo
Bookmarks: |
|
|
|
|
bridge for Island
SG,
Cheezy? I am dumb. In southern what does that mean?
It is good to know that at least there are others who don't get things done as quick as they want, besides me.
Will be looking for finished pictures.
kt
|
|
Add Photo
Bookmarks: |
|
|
|
|
bridge for Island
KT
Aint cheezy the guy that has the pole bridge. I read his post slo-----wer this time and it appears that he used a 4 foot dia tube with 1/4" thick walls. Is that correct. That is one hell of a bridge. Steel is 40lbs for 12" X 12" x 1" thick. So the way I got it figured one span is 11,200lbs of weight. I dont know it My 2425 farm pro is up to that.
|
|
Add Photo
Bookmarks: |
|
|
|
|
bridge for Island
Wait a minute. He used TS4x4x1/4 wall tube for his girders. Not counting the added length for the arch, the girders weigh 342 lbs each for a 28 ft span. TS4x4x1/4 wall tube weighs in at 12.21lbs/ft.
The capacity of the bridge isn't necessarily directly related to the weight of the girders. Assuming he used two girders, the bridge weighs 684lbs, plus the stringers and deck.
Relatively light actually.
|
|
Add Photo
Bookmarks: |
|
|
|
|
bridge for Island
What is TS is this expanded metal? 4' x 4' X 1/4" thick square tubing. I may need another picture Beagle.
|
|
Add Photo
Bookmarks: |
|
|
|
|
bridge for Island
You know, I went back and looked at his post. It does say 4', or 4 foot 1/4 wall tubing, but I think he meant 4" tubing, which is a common size in square tubing, so I used that for the weight. I don't think he built a 28' span bridge out of 4 foot deep tube.
TS, or more recently HSS, is used to designate cold rolled steel tubing. The old TS designation was "Tube Steel", the more recent HSS designation is for "Hollow Structural Sections". Just a sexy industry designation for steel tubing.
|
|
Add Photo
Bookmarks: |
|
|
|
Gas Generator Weather Protecti
02-20-2006, 15:10 
Reply
Digg It 
Del.icio.us 
