Any ideas on how to build a bridge?
Discussion
Andeh1 - and I'm pleased to say we're pretty much going with your proposed solution from the second post. Two big RSJ's, sleepers sandwiched in between and bolted to the webs with titanium bolts. Ends of the bridge bolted to concrete piles that will themselves be tied together with the piles going into plastic pipe to minimise leaching. Or something like that...
Given this thing is for carrying a tractor chicken wire isn't going to be very durable; GRP or galvanised steel grating would be a better bet, or perhaps rebar mesh if the budget is tight.
lear said:
Andeh1 - and I'm pleased to say we're pretty much going with your proposed solution from the second post. Two big RSJ's, sleepers sandwiched in between and bolted to the webs with titanium bolts. Ends of the bridge bolted to concrete piles that will themselves be tied together with the piles going into plastic pipe to minimise leaching. Or something like that...
You can use titanium but I can think of no advantages in doing so other than bragging rights; the cost is eyewatering compared to ordinary steel fasteners.Edited by hidetheelephants on Wednesday 17th July 20:01
Good progress today (by everyone but me!)...
First had to cut / extend the level access down to the stream and meadow:
To enable this to get the materials down without falling over:
Then the piles drilled and sunk in heavy piping:
And a reinforced ‘bridge’ poured between the piles onto which the steels will be bolted:
To be repeated on the other bank:
So far so good; though it did strike me I could probably have just chucked a bunch of sleepers over the gap, strapped them together and driven across...but hey-ho let’s build a bridge instead!
First had to cut / extend the level access down to the stream and meadow:
To enable this to get the materials down without falling over:
Then the piles drilled and sunk in heavy piping:
And a reinforced ‘bridge’ poured between the piles onto which the steels will be bolted:
To be repeated on the other bank:
So far so good; though it did strike me I could probably have just chucked a bunch of sleepers over the gap, strapped them together and driven across...but hey-ho let’s build a bridge instead!
Edited by lear on Friday 19th July 22:48
I googled to find out how much an old Bailey bridge would cost. An entire site dedicated to bridges!
https://www.bridgesforsale.co.uk/node/59
https://www.bridgesforsale.co.uk/node/59
C Lee Farquar said:
We've been delivering this week to a chap building a bridge
He's dug two big holes and put 8 cubic metres of concrete in each. No idea on the deck construction
So for reference. It's a minimum of 5 men required to watch concrete being poured or it'll not set? At a push could it be done with 4? He's dug two big holes and put 8 cubic metres of concrete in each. No idea on the deck construction
Munter said:
C Lee Farquar said:
So for reference. It's a minimum of 5 men required to watch concrete being poured or it'll not set? At a push could it be done with 4? 
shouldbworking said:
I googled to find out how much an old Bailey bridge would cost. An entire site dedicated to bridges!
https://www.bridgesforsale.co.uk/node/59
Thats a blooming awesome website!https://www.bridgesforsale.co.uk/node/59
Another thing I have thought as an option, is a forklift yard-ramp. Seems you can pick one up for £2500 on ebay, take the deck off and place that over the brook.
Daniel
DonkeyApple said:
It looks like one man per corner, Clearly corner staring is vital and highly skilled job, hence why the lady is left to do the easy bit of controlling the whole pour. I'm guessing the number of professionally qualified corner starers required is defined primarily by the number of corners the hole has? Obviously, this seems very advantageous to a man with a lazy eye as he can stare at two corners simultaneously and earn twice as much.
It's entertaining for us country boys, watching £100 a minute disappearing into the ground. 
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