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Survey Questions for Vehicle Manufacturers

Dear Industry Professional,

We are conducting a research project entitled “Development of Precast Girder Transport Vehicle Stability Analysis Parameters” funded by the PCI. This project is intended to: (1) clearly quantify transport vehicle stability analysis parameters, most importantly rotational stiffness; and (2) define a protocol for specifying and verifying those parameters for contracting. Because the outcome of this project will affect many of you whose vehicles are used to handle long precast prestressed concrete girders, we strongly encourage your participation and your assistance is truly appreciated. If you have any questions or would like to provide additional information, please feel free to contact C. Shawn Sun (shawn.sun@csun.edu) or Maher Tadros (maher.tadros@econstruct.us).

California State University, Northridge and eConstruct, LLC
1.Respondent information (This information is being collected for follow-up correspondence only and will not be used for other purposes)
2.Have you measured the rotational stiffness of your vehicle?
3.If your answer to Question 2 is "Yes", please specify the method.
4.Does your engineer have any mathematical models for assessing vehicle’s rotational stiffness?
5.If your engineer can provide additional information on the measurement of rotational stiffness, please provide his/her contact information.
6.Provide the rotational stiffness (unit in kip-in. per radian) of the transport vehicle(s), if available.
7.Provide the truck width (center-to-center distance between dual tires), height of roll axis above roadway, and numbers of axles for dolly (rear trailer) and jeep (front trailer).
8.Specify the suspension systems of the jeeps
9.Specify the suspension systems of the dollies
10.If you manufacture pups in the transport vehicle, please specify its suspension system.
11.Describe the transport vehicles' steering system
12.Specify the transport vehicles’ load leveling system
13.Do the transport vehicles have adjustable width axles?
14.May we contact you to ask additional questions regarding your survey responses?
15.Are you willing to assist our research team in measuring the transport vehicle’s characteristic parameters, including the rotational stiffness?
Current Progress,
0 of 15 answered