TABLE OF CONTENTS The following notation is used in this chapter:
| SYMBOL | DEFINITION | |
| a | Acceleration | |
| a max | Maximum horizontal acceleration at ground surface (also known as peak ground acceleration) | |
| A, B, C | Seismic source types | |
| B | Width of pipeline (for trench conditions B = width of trench at top of pipeline) | |
| C a , C v | Seismic coefficients needed for development of a response spectrum | |
| C w | Coefficient used to calculate load on a pipeline for trench or jacked condition | |
| D | Diameter of pipeline | |
| E ? | Modulus of soil resistance | |
| F v | Vertical pseudostatic force (pipeline design) | |
| g | Acceleration of gravity | |
| H | Height of soil above top of pipeline | |
| k h | Horizontal seismic coefficient | |
| k v | Vertical seismic coefficient | |
| K b | Bedding coefficient | |
| m | Total mass of soil bearing on pipeline | |
| N a , N v | Near-source factors | |
| ( N 1) 60 | N value corrected for field testing procedures and overburden pressure | |
| s u | Undrained shear strength | |
| S A, S B, etc. | Soil profile types | |
| T | Period of vibration | |
| T 0, T s | Periods needed for determination of response spectrum | |
| V s 1 | Corrected shear wave velocity [Equation (6.9)] | |
| W | Total weight of soil bearing on top of pipeline | |
| W min | Minimum vertical load on rigid pipeline | |
| ? t | Total unit weight of soil |
The prior chapters in Part...
