Starting my bridge!!

[Xfaxman]

 

[Doorman63]

View attachment 786843

Thank you sir!!

Cut and notched 4 of the 6 cross tubes last night.

Cross tubes are on 2.5’ centers

Laid those 4 out this morning…..looking like a bridge!!

Gonna cut and notch the last 2 now.
Waiting till after 8 to fire up the welder

 

[kenmbz]

Did you put gravel or something to keep moisture off the wood supports?
The bridge is going up pretty fast, looks good, thanks for taking us on the ride.

 

[LS Tractor Owner]

Doing a great job! Fast too!

 

[Doorman63]

Did you put gravel or something to keep moisture off the wood supports?
The bridge is going up pretty fast, looks good, thanks for taking us on the ride.

No sir
6x6 treated rated for ground contact

 

[Doorman63]

Welding is done!!!

Gonna set a string line on one side.
Throw some boards across and park both ATVs right in the middle and measure deflection……stay tuned

 

[Doorman63]

Results……

Started with a bit of a crown….approx 1/8”

I’d say there’s an 1/8” between the string and the 2x4. 1/4” sag.

I have some 3/8 crane cable….I may make a “u” under each stringer and use a turnbuckle to “arch” the bridge

 

[2manyrocks]

The traditional metal bridge construction method was to use a truss design. From what I read, much of the strength in a utility trailer has to do with the sidewalls acting like truss members and even there, a single solid rod added as a reinforcing member to the top of the sidewall construction can add to the carrying strength. Also, having some sort of sidewall members on a bridge would seem to add to the safety factor.

 

[scootr]

An inexpensive rebar guard rail could act as a truss.

 

[Doorman63]

The traditional metal bridge construction method was to use a truss design. From what I read, much of the strength in a utility trailer has to do with the sidewalls acting like truss members and even there, a single solid rod added as a reinforcing member to the top of the sidewall construction can add to the carrying strength. Also, having some sort of sidewall members on a bridge would seem to add to the safety factor.

I plan on a railing/guardrail of some kind.

 

[Doorman63]

An inexpensive rebar guard rail could act as a truss.

Scootr
I was gonna build that under the span with cable/turnbuckles/piece of steel center span

Tighten turnbuckle-arch bridge

 

[bcp]

An inexpensive rebar guard rail could act as a truss.

That should be under the bridge to add much strength. On top, the rebar is in compression.

Bruce

 

[Rockbadchild]

I did find these tubing pretty thin, figured three of them with the cross members would've been sufficient... The two ATV you are about 1200lb, the average 1/2 tone truck is around 5500lb... unfortunately I don't think I would want to drive one across...

 

[Doorman63]

I did find these tubing pretty thin, figured three of them with the cross members would've been sufficient... The two ATV you are about 1200lb, the average 1/2 tone truck is around 5500lb... unfortunately I don't think I would want to drive one across...

Hence the cable/turnbuckle idea

I don’t NEED to drive a vehicle across.
Mostly a test of my skill to see if I can build so a vehicle can drive across

 

[Torvy]

Will it look something like this when you are done?

 

[Doorman63]

Will it look something like this when you are done?

View attachment 787022

Less lights….

 

[Doorman63]

Nothing new……
Except the churning in my brain!!

Most likely will put a concrete abutment on both sides. Rough math says approx 1-1.5yd should give me what I want. Getting it to the other side is my big challenge. Trying to figure where else to put more concrete. Minimum with no cartage is 3yds if memory is correct

Cable/turnbuckle idea will be used

 

[bindian]

Bu

Nothing new……
Except the churning in my brain!!

Most likely will put a concrete abutment on both sides. Rough math says approx 1-1.5yd should give me what I want. Getting it to the other side is my big challenge. Trying to figure where else to put more concrete. Minimum with no cartage is 3yds if memory is correct

Cable/turnbuckle idea will be used

Build a wooden chute out of 2x6 sides and maybe a 2x10 for a bottom.
Hire a guy with an excavator or telehandler and a concrete bucket.
hugs, Brandi

 

[Doorman63]

Bu

Build a wooden chute out of 2x6 sides and maybe a 2x10 for a bottom.
Hire a guy with an excavator or telehandler and a concrete bucket.
hugs, Brandi

That pesky “hiring” word…….
My neighbor has a couple excavators but I hate imposing.
The chute idea isn’t bad…….
I do have a teenage boy with friends and some wheel barrows.

 

[bindian]

That pesky “hiring” word…….
My neighbor has a couple excavators but I hate imposing.
The chute idea isn’t bad…….
I do have a teenage boy with friends and some wheel barrows.

The mix will have to be real wet for a chute. You may have to push it down the chute otherwise.
hugs, Brandi