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We have incorrectly ordered 350W which has failed a charpy test to match 350WT. The order consist of a small quantity of C Channel and plate what can I source today as an equal or better the 350WT.

We have installed caissons to toe in front of existing sheet piles that are to short in a dock. We know have to excavate in order to install an underwater cap on top of the caissons. In order to excavate we have to build a temporary system to support the wall until the cap is constucted. Based...

The last are excellent from a contractors point of view.

We are currently working with an owner who has now stated that they are not comfortable with the use of the DMT instead of the provided data using the SPT. We went ahead with our own DMT testing to provide better data in designing for a temorary works required to construct the project.

We install 15m rebar on highway bridges usually 6'' to 1' deep and are then required to pull test 5% to a certain strength.

It's not going anywhere pour and it will be fine.

We are a contractor just getting into this work for Highway departments.We always use engineering to do our shorings and usually go with the more expensive sheet pile designs.We have seen many old timers build chaep systems especially on private jobs as in this case there days are numbered.

We completed the coating of a weathered steel bridge using conventional blasting of the steel and meeting the proper profiles to paint a 3 coat epoxy zinc coating. The paint is now starting to fail.Is weathering steel meant to be painted. Any advice would be helpful.

Materials pricing is increasing but I think the biggest increase are due to regulations in the public sector and the lack of skilled labour to meet some public sector which sometimes ramp up with large bridge programs.It takes 5 years on average for a foreman to learn how to build bridges on his...

Have you looked at ripping the floor out.You would end up with a nice new look and new flloor instead of a patch job. You may not even pay much more for it.

We have hired a subcontractor to paint weathered steel girders,the spec calls for a waterblast surface preparation with very little flash rust.Our sub is finding this method impractical and has requested to use abrasive blasting.Which is better.

How do I calculate the vertical lift capacity of a 1-inch dia. 304 S.Stl. UNC bolt? The nut & bolt act as a lifting device and will be torqued by hand. The action of the pitch will raise the load. At what point should we worry about load binding? From the mechanical forum, I have learned that...

How do I calculate the vertical lift capacity of a 1-inch dia. 304 S.Stl. UNC bolt? The nut & bolt act as a lifting device and will be torqued by hand. The action of the pitch will raise the load. At what point should we worry about load binding?

Can anybody recommend a decent beam analysis software? Thanks.

Roadway embankment widening/grade raise. Sideslope is 45-degrees. Engineer requires clay fill using geogrid reinforcement. Normally this is done with cohesionless material. Does anyone have any experience or comments regarding the use of clay in such an application? What about concerns...

Have you carried out a cost review it may be quicker but is it better o5r cost effective.With the joints that you will have the life span of these structures is lower than conventional cast in place.For what you will pay is it worth it.

We are trying to determine which is the best method to measure movement of a bridge when traffic passes over it should we use strain gauges or PPV's.

We have been placing approaches for years and I am not sure they are needed.On low volume roads I think the savings are justified.

We are working on a bridge rehab which consists of removing a overhang,abutment & pier joints and replacing with new overhang and making the bridge semi-integral and tied at the pier. The bridge is a steel bathtub girder structure.We placed 40mpa mildly retarded concrete on the...

We are producing pre-cast elements and stripping after 5 hours in a shop with a temp of 60 degrees.Mix consists of 415kg of cement with the addition of a 2% of a non cloride additive. We are experiercing a softness and briddle nature of the hardened concrete even after a number of days in the field.