Plumbing Supply Piping

Plumbing Supply

Section 2600 IRC

Section N1103 IRC

General

P2601.2

Must be connected to sanitary drainage system

P2603.2.1

Protection against damage

P2603.3.1

Penetration

P2603.4

Pipes through foundation walls

P2603.5

N1103.5.3

Freezing

Hot water pipe insulation requirements

General Installation Requirements

P2604.1

Trenching and bedding

P2604.2

Water service and building sewer in same trench

P2604.3

Backfilling

P2604.4

Protection of footings

P2903.7

Minimum required pipe sizes (main and distribution)

P2605.1

Supports

P2606.1

Sealing of annular spaces

P2607

Waterproofing of openings

P2902.3

Backflow protection

Spacing Chart for Different Materials (spacing in feet)

Material                                                                                                    Max Horizontal ft         Max Vertical ft

PVC

4

10

CPVC  1 inch or smaller

3

10

PEX     1 inch or smaller

2.67

4

PEX    1 ¼ inch or larger

4

10

COPPER (1 ¼ inch or smaller)

6

10

COPPER  (1 ½  inch or larger)

10

10