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Survey Questions for Haulers

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 who transport 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.What is the maximum length of precast prestressed concrete bridge girders that your company has transported?
3.The following option(s) is used to ensure stability during girder transportation:
4.Regarding the dollies (rear trailers) of the transport vehicles, please specify the models and manufacturers’ contact information.
5.Regarding the jeeps (front trailers) of the transport vehicles, please specify the models and manufacturers’ contact information.
6.Provide the truck width (center-to-center distance between dual tires), height of girder bottom above roadway, height of roll axis above roadway, and maximum overhangs.
7.Have you measured the transport vehicle’s rotational stiffness?
8.If your answer to Question 7 is "Yes", what method was used to measure the rotational stiffness?
9.Specify the suspension systems of the dollies
10.Specify the suspension systems of the jeeps
11.If you use pups in the transport vehicles, please specify their suspension system(s).
12.Describe the transport vehicles’ steering system
13.Specify the transport vehicles’ load leveling system
14.Do the transport vehicles have adjustable width axles?
15.May we contact you to ask additional questions regarding your survey responses and experiences with girder transportation?
16.Are you willing to assist our research team in measuring the transport vehicle’s characteristic parameters, including the rotational stiffness? 
17.Would you please ask your dolly and jeep manufacturers to complete a survey using the following link: https://www.surveymonkey.com/r/HND6933
Current Progress,
0 of 17 answered