How much does 1/2 inch copper pipe weigh per foot?

Standard 1/2-inch Type L copper pipe weighs 0.285 lbs per foot dry and holds 0.10 lbs of water per foot, totaling roughly 0.385 lbs per foot in service.

PlumbingASTM B88 & MSS SP-58 Standards

Copper Pipe Weight Calculator

Calculate dry pipe weight, water volume weight, and total operating wet weight for Type K, L, and M copper tubing to size structural pipe hangers.

Plumbing Field StandardsASTM B88 & MSS SP-58 Standards

Engineering formulations calibrated to IPC, UPC & NEC specificationsSub-Zero Cold Climate Tolerances

Quick Summary & Key Answer

100 feet of standard 1-inch Type L copper pipe weighs 65.5 lbs dry. When completely filled with water, it holds 38 lbs of water, bringing the total operating weight to 103.5 lbs (1.035 lbs per foot). Under plumbing code MSS SP-58, it requires structural pipe hangers every 8 feet.

Type K (Green stripe) has the thickest wall, used for underground water service mains.
Type L (Blue stripe) is the universal standard for residential and commercial indoor plumbing.
Type M (Red stripe) has the thinnest wall, permitted for hydronic heating baseboards.

Interactive Calculator

Adjust inputs for real-time results

Nominal Copper Pipe Size

Copper Type (Wall Thickness)

Total Run Lengthfeet

feet

Calculated OutputType L Verified

Total Water-Filled Weight

51.8lbs

Dry Pipe Metal Weight: 32.8 lbs
Contained Water Weight: 19.0 lbs
Max Pipe Hanger Spacing: 8 ft
Minimum Hangers Required: 8 hangers

Note: Calculated per ASTM B88 and MSS SP-58 pipe hanger support standards.

Copper Pipe Types & Wall Thickness Comparison

All three standard ASTM B88 copper tube types share the exact same outside diameter (OD), ensuring fittings fit interchangeably. The difference lies strictly in wall thickness and internal flow diameter.

Frequently Asked Questions

Common questions regarding this calculation and code compliance

Under the Uniform Plumbing Code (UPC Table 313.1), horizontal copper tubing 1-1/4 inches and smaller must be supported every 6 to 8 feet. Copper tubing 1-1/2 inches and larger must be supported every 10 to 12 feet.