Pipefitting

Pipe Ordinate Spacing Calculator

Generate equal wrap spacing marks around a pipe for 8, 12, 16, 24, or 32 ordinate layouts.

Pipe outside diameter (in) Number of ordinates

Spacing per mark7.069"Circumference: 113.097"

Quarter wrap28.274"

Half wrap56.549"

Ordinates16

OD36.000"

Mark	Distance from 0	Nearest 1/16

This produces equal wrap spacing only. Actual fishmouth/cut ordinates require branch size, header size, angle, wall, and the layout method used by the shop or print.

How to use this tool

Pipe Ordinate Spacing Calculator guide

Generate equal wrap spacing marks around a pipe for 8, 12, 16, 24, or 32 ordinate layouts. Enter the field measurements you know, then use the result as a fast planning, layout, or estimating reference.

BlueCollarCalc is meant to speed up math, not replace drawings, code books, lift plans, manufacturer data, engineered designs, or qualified trade judgment. Always verify before using any number on a real job.