Historic Iron Truss Relocation - Riveting for Reassembly
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- čas přidán 24. 07. 2024
- Bridge 5721, originally built in the 1870s and one of Minnesota's only iron (not steel) truss bridges, was disassembled in 2009 at its northern location in Koochiching County. The truss members were refurbished and reassembly began last fall at a new site east of St. Paul in Washington County. Newly renumbered as Bridge 82524, it will carry pedestrian, bicycle, and equestrian traffic on a trail over Manning Ave. This spring the truss will be lifted into place over the road.
Two videos document parts of the disassembly and reassembly process. Instead of modern bolts, hot rivets were used experimentally to reassemble a few connections. The riveting is seen in this video. The disassembly video is in the previous blog.
See Mn/DOT's web page on this and other historic bridge projects:
www.dot.state.mn.us/historicbr...
Courtesy of guest blogger -- Bob Frame
Seeing these guys struggle makes me think of the original builders who would have had the furnaces often 20+ feet away from where the rivets were going. Those crazy bastards would toss the red hot rivets to each other using thick leather and asbestos gloves.
Nice! These old school techniques are beautiful.
Thanks for the video and thanks for having a real sound track instead of some sort of elevator music. These rivets are what got us through the industrial revolution.
Thank Andrew Carnegie's investments on all that.
Always wondered how they did rivets. Thanks for posting.
riveting visuals on display here right now
THAT BEARDED OLD MAN IS A FIRE HAZARD UP THERE.
Hot rivets…right out of the oven!
Just like grandpa used to make!
You know a few old timers are watchin this thinkin, " if ya'll just moved faster you wouldn't need that torch"
Finally
Want to see this
Thank u for uploading
As the old saying goes”strike while the Iron is hot” u got to move faster than that
thanks to share this video i wanted to know about that type rivting
Riveting produces the strongest metal to metal connections but costs more takes longer
Yes, more expensive than modern Tek 5 self drilling screws indeed.
Cool job but no rivet tossing? The speed in which the old timers got the rivet from furnace to point was amazing. Busted many rivets and did some. Never had the furnace in a reachlift. Is that OSHA approved? I'm a union ironworker in Jersey just for reference.
THANKS A LOT.
The men who originally built this bridge are laughing from their graves at these guys.
Maybe but they're slower because of safety procedures which is necessary for those workers and the commissioners.
you can ask him, he's the guy in the middle with the long beard.
And we laugh at you Latinos when you under bid every other contractor to get a job then follow absolutely ZERO safety precautions and end up having some scaffolding or a roof collapse on you. But hey safety is for pussies am I right?
To all the people involved with this thing on you tube....This video is funny and you make me laugh.
Thanks liked it
How riveting.
IRON Rivets were rarely driven pnuematically !!
what is used to hold the rivet in place while rivetting??
Looking at a similar project. Where do you get rivets & buck up, head forming tools?
In 1870, the rivet must have been hammered in place.
Neumatic tools have been around for some time maybe even that long ago
Super!
Okay.... I have watched a few of these videos. WTF are they using to buck the rivets? What am I missing?
A variety of tools were used for "holdong up" or "holding on" ("bucking" in the US) the choice of tool depended on acess. The ususal choice for structural work was another Air hammer only slightly larger than the one used for driving the rivet, the other choice for more difficult acess was an air jack or "jam back" (sometimes with a built in hammer facility. A lot of "home made " tools were also made for specific applications. My Faather's/Grandfather's toolbox must have weighed close to half a ton with the quantity/variety of tools in it.
Yea, kinda looks like they need some old school veteran rivet guys up there. Maybe some of the old Mackinac Bridge guys are still around, they did over 4,800,000 rivets on the Mighty Mac. I'm kinda thinking I don't want to ever drive over this Minnesota bridge.
Rivets went out in the 60's so good luck finding and convincing them from retirement
More cowboy Ironworkers trying to do a Boilermakers job !
Dont see no boilers ships or room for three boiler makers lol
Typical answer of some one who has no idea what a Boiler Maker is or does
@@albertbell7120 ok
Wow! they do it one by one??
What's the new technology for doing this today?
welding
Self drilling screws.
This is Mans work ...no office work here .
why not to use bolt connection?
+edulove88 ask To preserve the historic look?
Bolts are uglier than rivets and more prone to failure as they have a shelf life. Whereas bridges like this were built to last.
I would recommend a self-drilling screw connection. No nuts required.
Would welding not be faster?
you can't just weld a connection designed for rivets or vice versa, it won't be nearly as strong
D GW In the temperature extremes a bridge will grow and shrink. It's not unusual for a good size bridge to change length by feet. Rivets let the steel move. If it were welded together, it would warp and buckle when the weather changed.
The best alternative in today's world is either bolts or self-drilling screws.
Meh...just use some superglue...should be fine.
tie wraps and duct tape
DrHokeyPokey Lol!
I prefer the modern day self-drilling screw.
to slow
Em português: czcams.com/video/z9k-fh-530c/video.html
Donald duck brought me here..
Y'all look too old and work too slow. Never were allowed to re-heat rivets in the hole. Get 'em up quick and hot.
Both rivets looked to be too short ..... the snap shouldn't make contact with the plate.
This is a lost art. New bridges use stronger nut and bolt type fasteners.
tribulation138 Nuts and bolts are not stronger than rivets. Bridges are still riveted.
+ardvarkkkkk1 Indeed Nuts and Bolts are far from stronger.
Nope, rivets are weaker since they can not be hardened by temperature treatment. They would lose this hardening upon heating for installation. Besides ease of installation, this important reason for using high-strength bolts and nuts.
That's not thruth, the bolts are not filling the hole, the rivets do, that's the strength of a rivet
yes and draws it up as it tigher as it cools, and its somewhat work hardened by the hammering its forged into place, while not as hard as bolts, they will not work loose unless a sort of locking bolt like a rivenut is used that will torque off tight or screwed on and permanently locks on, so it has give and flex but holds where it will not work loose, which is why rivets are used still in some places for joints of things that jostle like car and truck frames or aircraft skin, or tools like tongs or scissors for example, and if done right will hold just as long, as a weld, they also will not snap all at once like a brittle weld can when fails, though this is less a case today with the research that has been done on welding and metalurgy, but one rivet can break but the others will hold, if done right and the rivet is upsett into place and not just bent into place where it actually fills up the whole void of the joint.
you boys are realy slow at that
The rivet isn’t hot enough. These guys are hopeless
Either the furnace isn’t hot enough or they’re taking them out too early but the rivets should be white hot.
WRONG