• Codes
  • Features

    Features Overview

    Go to features
    Reference

    Reference.

    A reliable and up-to-date source of codes.
    Research

    Research.

    Rapidly and efficiently calculate project parameters.
    Collaboration

    Collaboration.

    Get everyone on the same page and streamline code research.
    Workflows
    Architects
    Architects
    General Contractors
    General Contractors
    Building Official & Plans Examiners
    Building Official & Plans Examiners
    Inspectors
    Inspectors
    Owners
    Owners
    Subcontractors
    Subcontractors
    Code Consultants
    Code Consultants
  • Pricing
  • Login
  • Sign Up
Sign Up
Login
  • Code Library
  • Features
  • Pricing
  • About
  • Careers
  • Help
  • Contact
  • Terms
  • Privacy
Sign Up
Upgrade to Premium
Code calculators: Code Calculators automatically generates a detailed list of requirements.
REFERENCE
Amendment Styling
Industry-leading search
Code diagrams
RESEARCH
Code calculators
Filter by topic
Code compare
Code sheet exports
COLLABORATION
Team projects
Bookmarks
Comments
START 2 WEEK FREE TRIAL
Have an account? Sign in
// CODE SNIPPET

A 105.0 Size of Building Supply

2021 Oregon Plumbing Specialty Code > A Recommended Rules for Sizing the Water Supply System > A 105.0 Size of Building Supply
JUMP TO FULL CODE CHAPTER

A 105.1 Diameter

Knowing the permissible friction loss per 100 feet (30 480 mm) of pipe and the total demand, the diameter of the building supply pipe shall be permitted to be obtained from Chart A 105.1(1), Chart A 105.1(2), Chart A 105.1(3), Chart A 105.1(4) Chart A 105.1(5), Chart A 105.1(6), or Chart A 105.1(7), whichever is applicable. The diameter of pipe on or next above the coordinate point corresponding to the estimated total demand and the permissible friction loss will be the size needed up to the first branch from the building supply pipe.


CHART A 105.1(1)

For SI units: 1 inch = 25 mm, 1 gallon per minute = 0.06 L/s, 1 pound-force per square inch = 6.8947 kPa, 1 foot = 304.8 mm, 1 foot per second = 0.3048 m/s


CHART A 105.1(2)

For SI units: 1 inch = 25 mm, 1 gallon per minute = 0.06 L/s, 1 pound-force per square inch = 6.8947 kPa, 1 foot = 304.8 mm, 1 foot per second = 0.3048 m/s


CHART A 105.1(3)

For SI units: 1 inch = 25 mm, 1 gallon per minute = 0.06 L/s, 1 pound-force per square inch = 6.8947 kPa, 1 foot = 304.8 mm, 1 foot per second = 0.3048 m/s


CHART A 105.1(4)

For SI units: 1 inch = 25 mm, 1 gallon per minute = 0.06 L/s, 1 pound-force per square inch = 6.8947 kPa, 1 foot = 304.8 mm, 1 foot per second = 0.3048 m/s


CHART A 105.1(5)

For SI units: 1 inch = 25 mm, 1 gallon per minute = 0.06 L/s, 1 pound-force per square inch = 6.8947 kPa, 1 foot = 304.8 mm, 1 foot per second = 0.3048 m/s


CHART A 105.1(6)

For SI units: 1 inch = 25 mm, 1 gallon per minute = 0.06 L/s, 1 pound-force per square inch = 6.8947 kPa, 1 foot = 304.8 mm, 1 foot per second = 0.3048 m/s


CHART A 105.1(7)

For SI units: 1 inch = 25 mm, 1 gallon per minute = 0.06 L/s, 1 pound-force per square inch = 6.8947 kPa, 1 foot = 304.8 mm, 1 foot per second = 0.3048 m/s

A 105.2 Copper and Copper Alloy Piping

Where copper tubing or copper alloy pipe is to be used for the supply piping and where the character of the water is such that slight changes in the hydraulic characteristics are expected, Chart A 105.1(1) shall be permitted to be used.

A 105.3 Hard Water

Chart A 105.1(2) shall be used for ferrous pipe with the most favorable water supply in regards to corrosion and caking. Where the water is hard or corrosive, Chart A 105.1(3) or Chart A 105.1(4) will be applicable. For extremely hard water, it will be advisable to make additional allowances for the reduction of the capacity of hot-water lines in service.

Related Code Sections


A 105.0 Recommended Rules for Sizing the Water Supply System, Size of Building Supply
friction loss will be the size needed up to the first branch from the building supply pipe. CHART A 105.1(1) For SI units: 1 inch = 25 mm ...
2021 Oregon Plumbing Specialty Code > A Recommended Rules for Sizing the Water Supply System > A 105.0 Size of Building Supply
A 106.2 Recommended Rules for Sizing the Water Supply System, Branches
Where fixture branches to the building supply are sized for the same permissible friction loss per 100 feet (30 480 mm) of pipe as the branches ...
2021 Oregon Plumbing Specialty Code > A Recommended Rules for Sizing the Water Supply System > A 106.0 Size of Principal Branches and Risers > A 106.2 Branches
610.8 Water Supply and Distribution, Size of Meter and Building Supply Pipe Using Table 610.4
The size of the meter and the building supply pipe shall be determined as follows: Determine the available pressure at the water meter or other ...
2021 Oregon Plumbing Specialty Code > 6 Water Supply and Distribution > 610.0 Size of Potable Water Piping > 610.8 Size of Meter and Building Supply Pipe Using Table 610.4
M 102.8 Peak Water Demand Calculator, Examples Illustrating Use of Water Demand Calculator With Appendix A
Example 1: Indoor Water Use Only — Use the information given below to find the pipe size for the building supply to a residential building with six ...
2021 Oregon Plumbing Specialty Code > M Peak Water Demand Calculator > M 102.0 Demand Load > M 102.8 Examples Illustrating Use of Water Demand Calculator With Appendix A
A 108.1 Recommended Rules for Sizing the Water Supply System, Example
sizes of the various branches and risers shall be permitted to be determined in the same manner as the size of the building supply or the branch ...
2021 Oregon Plumbing Specialty Code > A Recommended Rules for Sizing the Water Supply System > A 108.0 Sizing > A 108.1 Example
Help Contact Us Privacy Terms
Code sheet exports
Code sheet exports
Generate a code sheet that integrates with your drawing set.
Code diagrams
Code diagrams
Unpack the code through illustrations and descriptions.
Code Compare
Code Compare
Highlight differences between any two building codes.
Search
Search
Don't miss relevant code. Quickly locate sections across your jurisdiction.
Code Calculators
Code Calculators
Code calculators automatically generate a detailed list of requirements.
Shared projects
Shared projects
Projects provide a dedicated space to collaborate on code research.
UpCodes Premium
Leverage the most sophisticated code compliance platform.
TRY FREE FOR TWO WEEKS VISIT PRICING
UpCodes Premium
Leverage the full code compliance platform.
START 2 WEEK FREE TRIAL PRICING