how to read elevation in piping isometric drawing

Insulation Area (in m²) can be found as (all in meter) x Length of Pipe (in meter)īy definition, Isometric drawings are a pictorial representation that combines height-width-depth/length into a single view with 30 degrees from its horizontal plane as shown in the below-attached image.

The volume of Water required for hydro testing is estimated as π x ² x Length of Pipe.

Pipe Weight is calculated as π x diameter of the pipe (in m) x length (in m) x thickness (in mm) x density of pipe material.

Inch Dia is calculated as the Size of the Pipe joint ( in inch) x No, of Joints.

Inch Meter can be estimated as the Length of pipe (in meters) x Size of pipe ( in inches).

Piping isometrics indirectly helps to calculate many parameters required during project execution like:

For reference as Stress Analysis model built up and the final stress mark up for updating stress requirements.

For marking up deviation during site modifications/ as-builting.

Orifice meter taps orientation (it depends upon the pipe direction and fluid typeīOM section is a very important section, as it affects the cost of the project.

Minimum gap requirement between the welds.

Field weld and Workshop weld Identification.

Structural penetration (if the line is crossing any structure).

Control Valve location and arrangement.

Continuation isometric drawing number (if the complete line do not fit in the single sheet).

Dimensions of all components and spools.

Slope (if it’s required as per project).

Line elevations (it can be centerline or BOP (Bottom of Pipe) elevation).Angle allocation and direction ( clockwise or anti-clockwise).Points to be checked at drawing area are as follows. Design Pressure and Design Temperature (It’s not mandatory).Insulation and Heat Tracing Type (If the line is insulated only).

Project Name, Project Code and Area Code.Here, you will learn to check the piping isometric drawing section-wise for ease of learning. The isometric drawing sheet consists of four major parts viz title block, drawing area, BOQ (Bill of Quantity ) section, and Special requirement notes section. To check the connection/end requirements for mounting the instruments. To check special items type and their dimensions To check elevation and orientation of connected nozzle To check line route, dimension, elevation, valve orientation and co-ordinates

To check Design Pressure & Temperature, stress critical lines, Hydro test pressure, inspection class and type, etc. To cross-check line number, line size, insulation, special requirement notes (like no pocket, press head), etc. P&ID (Piping and Instrumentation Diagram) Documents Required for Checking Piping Isometric Drawing Documents

How to read elevation in piping isometric drawing