Piping Stress Analysis Manhours Estimation

Piping Stress Analysis involves various activities such as preparation of stress critical lines list, modelling of lines in stress package such as CEASAR II, analysis of lines, marking of supports, creation of stress packages and updations/creation of stress design criteria. Typical manhours required for each of these activities are as follows.

SrActivity/UnitHours
1Study of Project Specificaitons and Bid Documents.40
2Creation of Stress Design Criteria/Instructions from Bid Documents. : Total40
3Listing/Defining Stress Systems from PID : Total20
4Preparation of Stress Critical Lines List : Total40
 5 Stress Analysis and Supporting of Critical Lines/ Per Line 12
 6 Preparation of Stress Reports / Per Report10
 7 Spring Data Sheets, Index, TBE / Per Spring3
 8 Special Support Design and Index / Per Support 4
9 Expansion Joint Data Sheet, Index, TBE / Per Joint 3
10 Sway Braces Data Sheets, Index, TBE / Per Brace4
11 Struts Data Sheets, Index, TBE / Per Stress4
 12 Support Markup of Non Critical Lines / Per Line 1
 13 Trunions Calculations / Per Calculation 2
14AFC Isometric Stress and Support Review / Per Iso0.5
15Supervision and Co-ordination : % of Total of Above10%

Supervision and Co-ordination activities includes :

  1. Review of Stress systems.
  2.  Vendor communication.
  3. Interdepartmental communication with Civil, Mechanical and process department.
  4. Job close out report preparation.
  5. Other miscellaneous activities which are not listed above