	Applies To
	Product(s):	AutoPIPE,
	Version(s):	2004, XM, & V8i
	Area:	Modeling
	Original Author:	Bentley Technical Support Group

Dec 2014, AutoPIPE V8i 09.06.01.10

Problem:

What will be the yield displacement value for following

- yield displacement to calculate longitudinal loose clay soil spring stiffness;
- yield displacement to calculate longitudinal loose sandy soil spring stiffness;

Solution:

Per the online help for this parameter, Longitudinal Yield Displacement, y1L [inch]

Enter the longitudinal yield displacement. The value is used when calculating the soil resistance, p1, in the longitudinal direction.

Defaults: Low = D/60, High = D/25.

Also, per the AutoPIPE soil example (mentioned above):

For medium sand, assume the value of yield displacement to be d/45.

Bentley is not able to provide a specific values for modeling, must use engineering judgement or consult a soil engineer when determine values such as this. In addition, AutoPIPE's Soil calculator can consider high, low, and avg values when generating soil spring stiffness values based on soil parameters.

A.01. What will be the yield displacement value for following in AutoPIPE?

Problem:

Solution:

See Also