We are designing a bridge and the client has requested that all vertical concrete surfaces be coated to prevent graffiti. We have not specified this before, but from looking on the internet, I see there are sacrificial and permanent coatings available.
Anyone have any experience with either...
I have a general question about the width of a concrete bridge deck. In the past, for a steel beam or plate girder bridge supported on steel rockers and bearings, longitudinal joints were used in the deck was to reduce the transverse movement at the bearings due to expansion and contraction...
Use the element information icon, that is the "i" in a circle.
If you just want the length of the element, use the measure length in the "measure" list of icons.
The simplest way is to use the Accudraw dialogue box. Tapping the space key will change the box from x & y to distance and angle.
Or you can use key-in commands, although I don't recall if you can directly put in distance and angle that way.
In the "place circle" dialog box, set the method to "edge".
Set your diameter/radius.
Use the "tangent" snap button when picking the lines or curves you want the circle tangent with.
Thanks for the quick responses. This particular question applies to a railroad bridge abutment under construction. The abutment was designed so that there is no uplift on the piles. The bedrock elevation varies, so in most cases there is fifteen feet or more from the bottom of footing to top...
For H-piles bearing on bedrock, is there a minimum length which should be provided between the bottom of footing and top of rock, other than for cost considerations? The overburden for this particular project is mostly clay material.
Alex,
This sounds like your display resolution setting is too low in AutoCad. In Autocad, under tools/options/display, set the display resolution to 1000 or higher. That should smooth out the segmented circles.
Mike
Torec,
When you select the pan icon, a dialogue box title pan view should open with an option to turn on/off dynamic display. If you click that on, then your panning action will work like AutoCads.
Mike
yjung,
Sorry I haven't replied sooner, but I have been too busy lately to keep up with the forum. If you are still looking for the CSX manual, the website is http://www.csxt.com/?fuseaction=general.main, then go to "public project information". This contains their guidelines for structures...
yjung,
CSX and Norfolk Southern railroads have each have guide manuals for bridges supporting their tracks. Other railroads may also. You can get a copy by contacting their engineering department.
Mike
Kramer,
Typically in Ohio, we use 1'-6 over the tops of the piles and that is sufficient for punching shear. Reinforce the cap for bending moments and shear. As Dinosaur said, don't worry about bearing stress over the pile.
Mike
Settings>Design file>coordinate readout
This will let you set your coordinate readout to azimuth instead of the default bearing. Also set your accuracy here.
Mike
I am reviewing revised shop drawings for a bridge and the fabricator has changed a weld detail. I am curious as to why he has changed the detail.
The original plans called for a complete penetration groove weld between the stiffener and the flange. The first submission on the shop drawings...
