I have placed a few exploratory calls to contractors who install drilled shaft foundations, but I don't have any personal contacts with them and haven't received any info back yet, so I thought someone in the forums might be able to help.
I'm investigating overhead clearances required to...
What you would like to do doesn't sound overly optimistic. In fact if it's on the small scale that I imagine from your second post, it may not even be all that expensive.
There are epoxy adhesives that are specially formulated for bonding steel surfaces and are heat and impact resistant.
If...
I hate to be a master of the obvious, but what could be better for bonding steel to steel than steel - is welding possible?
If not, many epoxy products are available that may meet your requirements. You will have to contact the manufacturers to determine which product is right for you.
Just a...
My understanding is that the distribution of soil pressure for braced or tied back excavations have been measured in-situ on many projects and the distributions you indicate are the ones recommended by AASHTO and other official groups to most closely match actual expected conditions. Also, the...
The text you want to see should be typed in the leftmost column. Select the four cells. Go to format cells - horizontal alignment - center across selection.
As long as nothing else is typed in the other three cells, this will do the job. ~dison
Just to add my two cents:
I have never found any use for merging cells. Merge prevents changing column widths and causes the sorting problems mentioned above. A better option is to use different formatting techniques, such as center across selection and breaking up text to give your...
I just had a thought:
Could you build a sort of retaining bridge? Build large "piers" outside the limits of the existing bridge on both ends of the retaining wall. Then use some method to bridge between the "piers" that won't require any overhead clearance. The supports...
I am no expert in soil freezing, so don't take my word as the absolute truth.
My understanding is that this method of soil retention works best in saturated, uniform soils. It has been used before, but I don't know how successful it has been. You should get in touch with a contractor who has...
I believe what you are asking about is falsework or shoring. The details of falsework are usually designed specifically for each project by the contractor who is tasked with erecting the superstructure for a bridge. The type of falsework required depends on the type of superstructure and also...
Several techniques are available to repair and strengthen reinforced concrete. The problem will be choosing the one that fixes the problem, causes the least disruption to service, and costs the least.
If the beam is fully accessible and temporary shoring can be erected to unload the beam, all...
I am not sure of your loading conditions for this grade beam supported on two footings, so I cannot give an opinion on which way would be the best way or required way to transfer the given loads. However, I can give a general response based on a general design of beams.
You can design it...
jackzhong:
The chances of actually getting the term "Cm/(1-fa/Fey)" to be less than one seems to me to be very unlikely. You would have to get an extraordinarily small fa in order to make the term <1. However, when fa/Fa is less than or equal to 0.15, AISC permits equation H1-3 in...
Now I am getting a little frustrated.
A colleague of mine adamantly insists that NO torsion is present in this girder. He believes that the only effect of the eccentric load is that the reactions at the bearings will also be eccentric and that only vertical shear is present if you took a...
flame & ishvaag,
Thanks for the responses. I also believe that torsion is present based on the restraint provided by the dead load of the bridge. However, there may be something I am overlooking or not looking at correctly.
Just to clarify a few things:
- there is no bridge deck, the top...
Please give me your opinions on what exactly is going on with the following situation:
- short simple span bridge
- two concrete slab girders side by side
- bearing at each end on one or more elastomeric pads
- no positive connection holding the girder down
to the substructure (gravity...
