18 Wheeler Truck Turning Template 6

[racv2]

I was asked to use a turning template for a 18 wheeler truck to design a parking layout. In the AASHTO Clasification what kind of truck is an 18 wheeler? Is it a WB-50? Thank you for any help.

 

[Maury]

18-wheeler is a common term for a semitrailer (tractor trailer vehicle). WB-50 is one type, 50 refers to the wheelbase distance in feet from the front axle of the tractor to the rear axle of the trailer. WB-50 is the second smallest of the WB series, so I wouldn't use any less than that and would probably go larger, such as a WB-65. Templates are included in "A Policy on Geometric Design of Streets and Highways" from AASHTO and should be available from the Federal Highway Administration.

 

[VoyageofDiscovery]

Hi racv2,

Try AutoTurn, with AutoCad or MicroStation.

Regards

VOD

 

[racv2]

Thank you for your answer Maury.

VoyageofDiscovery:
I try to get my boss to buy it but AutoTurn cuz I have used it before and he thinks it is a little too expensive.
Thank you for your suggestion.

 

[KRSServices]

Be careful with your turning allowances. For some arking lots, you will need to provide for the turning movements of super-B's and the like (fuel applications, etc). You may have to crystal ball a bit, but otherwise, I tend to be a little conservative and allow for the longer units.

KRS Services

http://www.krs-services.com

 

[ACtrafficengr]

Check with your state DOT and see what they use. In NY, trucks larger than WB-50's or pup tandems (twin 28 ft trailers) are not allowed general run of the highways, so designing for them where they won't be allowed is a waste of money.

I'd also suggest asking the client what vehicles they expect.

 

[birsch]

there is a truck turning template (for entering loading dock) at

http://www.hawsedc.com/gnu/turn.htm