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Hi, This is my first time i have came across this sort of problem so have limited experience on the subject. My problem is; i have a plate which is fully fixed at one end and side (perpendicular to each other) the remaining side are free. The force on the plate is transmitted via a swivel...

Hi all, I have a question regarding the application of the Euler Buckling theory. Q - Can this theory / equation be applied to a horizontal 'H' beam with a U.D.L? with the flanges in the Horizontal axis, ie; the web will be buckling / taking the compression load. (Boundary conditions fully...

Hi all, been quite a while since I have been on here...... I have a problem I hope some of you can point me in the correct direction; I have a simple beam reaction calc I need to calculate each reaction based upon one load. I cant remember the last time I done this for four reactions...

Hi, Bit rusty on the old excel. Could someone point me in the direction of what I need to do for; having a series of data values in a vertical column searching for values between two numbers ie: 12 & 15, then displaying the values in a new table . thanks for the help. Bert.

I have a question regarding cast in situ bridge girders relative to a load imposed considering pre-tensioning and ultimate elongation of strands. Specific details; Length of span = 30M Grade of Strands = 270k / 0.6” Pre tension imposed = 19500kg / Strand Neglect compression effects of...

I have a question regarding cast in situ bridge girders relative to a load imposed considering pre-tensioning and ultimate elongation of strands. Specific details; Length of span = 30M Grade of Strands = 270k / 0.6” Pre tension imposed = 19500kg / Strand Neglect compression effects of...

Hi, Its been a while since ive needed to calculate the defelection of a beam, in doing so i have came up with two quite different answers, using Macauleys and the direct deflection equation. calcs attached, any pointers in my errors would be soundly appreciated. Thanks!

Hi all, Can someone point me in the right direction for information on fly bridges. when i use the term 'FLYBRIDGE' ie; a modular steel structure which spans the bridge below. the specific type or usage will be for heavy loads up to 300Ton. any info or past history would be great.!! many...

Hi, Im wondering if anyone can point me in the right direction on how to analysis the load distribution of wheels running over the top of pipes underground, given various depths and dirt consistancy. A basic approach is all im looking for. EG: Please see attached picture, and suppose a load of...

After reading AASHTO manual, What is a standard factor of safety applied to reinforced concrete bridges? anyone help i was thinking in the area of 3-5? thanks.

Hi all, Im not a civil/bridge engineer, more mech design. I have a question regarding precast beam sections of bridges; If you have the section dimensions is there a standard to which you can come to the max load? ie; HE-A / HE-B section girders? properties as an example? also is there a...

Hi all i usually post in the mech forum but i use autocad quite often. Here's my problem; ive recently upgrade to windows 7, using the same copy of Autocad i used previously on XP. (2010 LT) However since ive started with Windows 7, the function to control plotting centre and hidden lines in...

Hi all, Quick question can someone please point me in the direction of an M42 bolt table that include, UTS / Shear single and double. (grade 8.8) thanks.

Hi all first time ive posted in this part of the forum. Could someone please point me in the direction for a general rule of thumb for surveying bridges. Basics is all im after at the moment.In areas like; :Max load capcity :General condition :Structural steel assessment. etc... thanks!

Please can someone help me in the solution for calculating the resulting force in the Z axis. attached is the situation (rigging diagram) specifiaclly the top slings are in question. the end elevation shows them to have an angle 65-69deg.interior angle and in the side elevation 72-74deg...

Hi, i currently have a program that converts PDF's to dfx file for autocad. However im wondering if anyone knows of a programme that can pick up vectors from PDF's that dont already have them? thanks

Sorry seem to have forgot how to calculate the reaction upon a three point beam, could someone point me in the right direction please... im am on the right path of quadratic equation given you have two unkowns? please see attached. thanks

Hi, I have been asked to review a document at work on a lifting beam design; After reviewing calculations for the rigging all is fine. However it then looks at the shear stress in different areas. The specific component in question is the plate at the end of the beam which (sling end has the...

I can not get my plot styles to work? im trying to plot drawings but for some reason the center lines ( standard style) are not showing as they are in model space, to the paper space or ploting. ive set the plot options to 'plot line styles' but this has no effect??? my layer is turned on...

Hi, i'm trying to calculate the ground bearing pressure for a crawler type crane, given a load at a radius. attached is an example to start with. the way im thinking is this; the load will give a moment at the point which the radius starts, which is of centre from the centre line of the...