Piping Design Manhours Estimation

Piping Design Engineering involves various activities such as preparation of Plot Plans, Equipment Layouts, Equipment 3D Modelling, Pipelines 3D Modeling, Isometrics Extraction, Checking. 3D Model Review, Piping Layouts etc. Typical manhours required for each of these activities are as follows.

Piping Specifications

Sr.Activity / UnitNewUpdate
1Piping Layout Specification / PDB4010
2Shop Fabrication Specification4010
3Field Fabrication Specification4010
4Tie Ins Specification4010
5Geo-graphic Color Code Specification4010
6Heat Tracing Specification4010

Direct 2D Cad Drawings

 1 Plot Plan Drawing100 80
2 Equipment Layouts100 40
 3 Piping Standards and Details Drawings / Per Drawing 40 10
4 Manual Piping Layout Drawings / Per Drawing140 New
5Manual Isometrics : New Lines / Tie Ins8New
6Revise Existing Piping Plan Drawings40NA
 7 As Built Piping Plans – Manual20 NA
8Piping Heat Tracing Drawings55

3D Modelling Workflow

1 3D Modelling : Equipments / Per Equipment6 6
23D Modelling : Piping and Supports 4 4
3 Isometrics Extraction / Per Drawing1 1
4 Piping Layout Extraction and Update / Per Drawing 40 New

Other Work

1 Vendor Drawings Checking/Drawing 1 NA
2Non CAD Demolition Drawings15New
 3 Piping Drawings/Models etc. Index20 New
 4 Designer Field Trips / Per Day 8 NA
5Tie-In List / Per Tie In11
63D Admin / CAD Co-ordinator / Per Week40NA
7Isometrics Drawing Index / Per Isometric11

Supervising Work

110% of Total Manhours Above10%NA