Does anyone know where I can find or can share a copy of: The Standard Specs 1st Edition, 1931 and The Standards Specs, 8th Edition 1961?
Maybe @bridgebuster might have a copy?
Thanks
The main DOT I do work for requires at least 3" plus the calculated change in length for thermal expansion between the end of the beam and the abutment backwall.
If you have a skewed bridge you have to account for this as well as the corner of the beam/girder and the edge of the bearing.
Well I learned something today. My prestressed girder designs use strands in the top of the beam, but they aren't temporary. I don't know why you would go to the trouble of cutting them later. Seems like if you have to go to that much trouble to make a design work then a different type of...
BridgeSmith,
Who is we?
Simple made continuous or continuous for live load is used quite a bit in Kansas and Missouri. The concrete diaphragms that encase the beam ends over the pier are detailed with the beams to make the girders continuous for live loads.
Link slabs have been defined for...
BridgeSmith what about when the end spans are longer than the center span? I don't know if I have ever seen that before. I have done 1:2.4:1 with integral abutments before. A now retired coworker did 1:2.8:1 with no problems.
Or what about when none of the spans are the same length?
I am trying to layout a series of parallel bridges over a creek that is more crooked than a politician. The creek meanders from northwest to southeast with multiple 180 degree U shaped bends, while the road is running east to west.
Given the span lengths, 175' to 300' depending on the bridge...
The 10th edition of the AASHTO specs is bringing some changes for cross frames and it doesn't look like MDX is going to get their act together anytime soon. It might be okay for a straight non-skewed bridge, but that's about it.
Does anyone have recommendations for a good steel bridge design...
BridgeSmith have you went out and looked at very many steel pile supported abutments with battered piles? They get pushed around by thermal and earth pressure forces, the type of bearings don't seem to matter. However, I'm not speaking of thermal forces from the superstructure, I'm talking...
Let's not kid ourselves on the stiffness of steel pile supported abutments, they are still fairly flexible, even with battered piles. Even conventional, non-integral abutments get shoved around quite a bit due to thermal forces, which is why I prefer integral abutments. Just let it move how it...
My understanding is they pay quarterly dividends based on how many shares you own. I have confirmed this with other shareholders. However, those dividends do not have taxes withheld.
Best I can tell, it looks like the I was paid ~10% of what a dividend would be and this had taxes withheld, so...
This is not an ESOP. I know people who have ESOPs at their employer. Odds are very good that the person running HR doesn't know anything about this.
I brought this up at my last performance review and received a blank stare. My direct supervisors have no ability to change this situation...
I appreciate all the answers. I have done some checking on salaries, and I believe I am being compensated at or above the market for my years of experience, responsibility, etc. I have gotten a couple raises since I was told I was given the shares. I have not changed my behavior, nor have I...
Ownership at the firm I work at is a bit different than most places that I am aware of, shares are simply given to you, as opposed to buying in. After talking to a few people, my understanding is that it's more of a way to add additional compensation to certain people without giving them a...
I am doing some analysis of a bridge that was designed in 1961 and am trying to understand the braking loads that were used for design at that time. I have the 17th edition of the standard specs and it states to use 5% of the live load for the longitudinal force. I dug up the 5th edition from...
