ASTM A53 / ASME B36.10M Schedule 40 Steel True ID: 0.824" (20.93 mm) 700 PSI W.O.G.

3/4" Schedule 40 Steel Pipe Volume & Capacity Calculator

Standard 3/4" nominal Schedule 40 carbon steel pipe has an exact ASME inside diameter of 0.824 inches, holding 0.0277 US gallons (0.344 liters per meter) per linear foot. Part of our Gas Pipe Volume Calculator and universal Pipe Volume Calculator suite.

Presets:

Calculated Result

Total Liquid Capacity

Internal Holding Volume

0.5540 US gallons

≈ 2.097 litres

Unit Conversions

US Gallons 0.5540 gal

Litres 2.097 L

Cubic Feet (ft³) 0.0741 ft³

Cubic Inches (in³) 127.98 in³

Imperial Gallons 0.4613 UK gal

Cubic Meters (m³) 0.0021 m³

Filled Water Weight 4.6 lbs (2.1 kg)

Linear Capacity Rate 0.0277 gal/ft

Calculations are based on cylindrical formula $V = \pi r^2 L$. Verify dimensions against manufacturer specs for code submittals.

Pre-Calculated Capacity Table

3/4" Schedule 40 Steel Pipe Quick Sizing Chart

Volumetric liquid holding capacity and dry/wet mechanical loads for 3/4" carbon steel pipe runs.

Pipe Length (Ft)	US Gallons	Liters	Cubic Feet (ft³)	Fluid Weight (lbs)	Dry Steel (lbs)	Total Wet Weight
1 ft	0.028 gal	0.10 L	0.004 ft³	0.2 lbs	1.1 lbs	1.4 lbs
2 ft	0.055 gal	0.21 L	0.007 ft³	0.5 lbs	2.3 lbs	2.7 lbs
5 ft	0.138 gal	0.52 L	0.019 ft³	1.2 lbs	5.7 lbs	6.8 lbs
10 ft	0.277 gal	1.05 L	0.037 ft³	2.3 lbs	11.3 lbs	13.6 lbs
20 ft	0.554 gal	2.10 L	0.074 ft³	4.6 lbs	22.6 lbs	27.2 lbs
50 ft	1.39 gal	5.2 L	0.18 ft³	11.6 lbs	56.5 lbs	68.1 lbs
100 ft	2.77 gal	10.5 L	0.37 ft³	23.1 lbs	113.1 lbs	136.2 lbs
250 ft	6.92 gal	26.2 L	0.93 ft³	57.8 lbs	282.8 lbs	340.5 lbs
500 ft	13.85 gal	52.4 L	1.85 ft³	115.5 lbs	565.5 lbs	681.0 lbs

Engineering Methodology

How to Calculate 3/4" Steel Pipe Volume

Exact cylinder geometry calculations based on ASME B36.10M inside diameter tolerances.

Step 1

Determine Inside Radius ($r$)

Divide ASME inside diameter by 2:

r = 0.824" / 2 = 0.4120"

Step 2

Compute Flow Area ($A$)

Calculate circular internal cross-sectional area:

A = \pi \times (0.4120)^2 = 0.5333 sq in

Step 3

Calculate Linear Foot Volume

Multiply cross-sectional area by 12 inches (1 linear foot):

V_linear = 0.5333 \times 12 = 6.399 cu in/ft

Step 4

Convert to US Gallons & Weight

Divide cubic inches by 231 (cubic inches in 1 US Gallon):

Gal/Ft = 6.399 / 231 = 0.0277 Gal/Ft

Technical Specifications

3/4" Schedule 40 Steel Profile

Physical dimensions, structural weights, and pressure thresholds.

Outside Diameter (OD)

1.05 inches

26.7 mm

Inside Diameter (ID)
0.824 inches
20.93 mm

Wall Thickness

0.113 inches

ASME B36.10M Spec

Max Recommended Flow

8.5 GPM

At standard liquid velocity

Bare Pipe Weight

1.131 lbs/ft

Structural iron dead load

Max Temperature Limit

450°F

232°C hydronic/steam

Common Applications for 3/4" Schedule 40 Steel Pipe:

Residential natural gas service headers
Hydronic heating zone loops
Fire sprinkler branch feeds

Primary Specification Note: The primary gas supply line diameter for single-family residential meter-to-manifold distribution runs.

Size Navigation

Compare Related Pipe Sizes & Schedules

Navigate directly to adjacent nominal diameters or alternate pipe materials.

← Smaller Size 1/2" Schedule 40 Steel Sub-Hub Gas Pipe Volume Calculator Larger Size → 1" Schedule 40 Steel Compare PVC Alternative ⇄ 3/4" PVC Schedule 40

Expert FAQ Guide

3/4" Schedule 40 Steel Pipe FAQs

Engineering questions and calculations for 3/4" carbon steel pipe.

2 Questions Answered

Q1 How many gallons of water are in 1 foot of 3/4" Schedule 40 steel pipe?

A standard 3/4 inch Schedule 40 steel pipe holds 0.0277 US Gallons (0.1049 Liters) of fluid per linear foot.

Q2 What is the internal volume of 100 feet of 3/4" black steel pipe?

100 feet of 3/4" Schedule 40 steel pipe holds approximately 2.77 US Gallons (0.37 cu.ft) of water or fluid.

Total Liquid Capacity

Unit Conversions

3/4" Schedule 40 Steel Pipe Quick Sizing Chart

How to Calculate 3/4" Steel Pipe Volume

Determine Inside Radius ($r$)

Compute Flow Area ($A$)

Calculate Linear Foot Volume

Convert to US Gallons & Weight

3/4" Schedule 40 Steel Profile

Common Applications for 3/4" Schedule 40 Steel Pipe:

Compare Related Pipe Sizes & Schedules

3/4" Schedule 40 Steel Pipe FAQs

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