Recent content by tubsdua

Hi, I am trying to create a numerical model for bullet penetration. In the experimental part 300 mm x 300 mm panels of varying thickness were subjected to Ogive nosed bullet impact from 7 ft with a muzzle velocity of 900 m/s. Panels upto 50 mm were perforated by the bullet with crater and...

Hello Ron, I agree with you on the aspects you have brought out. As a matter of fact I have recommended option 3 i.e having a Concrete ramp altogether with milling of existing flexible portion. Which means the transition is at the below level and the topping of concrete is constant. Secondly...

Yes sure, PQC - Pavement quality concrete (44 Kg/sqcm for us) DBM - Dense bituminous macadam

The option 3 was missed out.http://files.engineering.com/getfile.aspx?folder=811a5134-f3dd-4e63-ba13-54243a1b759d&file=Rigid_portion_of_runway_ramp_drawing_option_3.pdf

We are executing a runway work for overlaying the turning pads of an operational runway. The overlay is unbonded type (white topping) i.e 75 mm DBM over existing rigid pavement and followed by 375 mm of 44 Kg/sq cm PQC. Now the issue raised here is that after relaying the turning pad will be...

Thanks Ron..

Dear drewnje, We have a similar situation in one of our works. We are maintaining a busy runway in India and there is a time constraint involved in the repair/maintenance activities here. The overlay of flexible runway is now 10 years old and defects like raveling, alligator cracks and pot...

We have got a large quantity of PQC done through a contract. As per the acceptance criteria cores are planned to be cut. Indian Standard 516 'Method of tests for strength of concrete' specifies that for a height/diameter ratio of 2 for the core the compressive strength is 5/4 times the load at...

Thanks for the views Mike, TLycan and asixth. asixth can you point me to some literature on post installed anchors? Best.

Dear All, I am facing a typical problem at site and would like to seek guidance from experienced engineers here who have faced similar problem. We are casting 8 steel columns for erecting a door structure. The foundation for columns is pile foundation and the anchor bolts have been casted in...

Dear All, I am facing a typical problem at site and would like to seek guidance from experienced engineers here who have faced similar problem. We are casting 8 steel columns for erecting a door structure. The foundation for columns is pile foundation and the anchor bolts have been casted in...

I am sorry the file I posted at 12.02 is one with cable element insulator. The file attached here is the one with beam element insulator.http://files.engineering.com/getfile.aspx?folder=9483ff22-a60e-4b8e-915c-7254c0adf87c&file=insulator_as_beam_element.sdb

The simple beam element pinned at top and time history a other end is here. Check the time history plot for the element.http://files.engineering.com/getfile.aspx?folder=d0dab8e2-c5ed-4686-b83c-ffa568229980&file=simple_pendulum.sdb

Thanks for looking into my problem. I am attahcing the previous model again. You are right that the cables are slightly offset from the yz plane. That is because in the complete model the arms in the supporting towers are not of the same length. It is a real time model being monitored with...

No there is no explanation still. I tried to simplify the problem more and made another model to test this. A vertical beam element pinned at the top and a time history of loads applied at the free end. Chose the cosine function as time history available in SAP. Also applied a staic live load...