Yard & Slab — Jobsite Material Estimate

Precision US Contractor & Building Material Calculations (yardandslab.com)

Date: October 28, 2026

Standards: US Imperial (ASTM / Quikrete / IRC)

100% US Imperial Standard: All formulas calibrated for US Retail SKUs (80lb/60lb Bags, Cubic Yards, US Tons & Gallons)
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Sump Pump GPH & TDH Sizing Calculator

Find the correct sump pump HP and GPH using vertical lift, horizontal run, elbows, and water table severity inputs.

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⚡ Basement Head & Discharge Run

10 ft
4 ft (Shallow) 10 ft (Standard 8' Basement) 25 ft (Deep walkout)
20 ft
5 ft 50 ft 100 ft
Each adds ~2.5' friction head

⚙️ Total Dynamic Head (TDH): 10.8 ft (Static lift 10' + Pipe friction + check valve).

💧 Sump pumps are rated by GPH delivered at your specific TDH, not zero-head flow.

Recommended Motor Size

1/2 HP Cast Iron Sump Pump

Flow Needed @ 10.8' TDH

2,500 GPH

(42 GPM)

Total Dynamic Head: 10.8 ft Discharge Pipe: 1-1/2" Schedule 40 PVC Check Valve: Mandatory

Basement Sump Pit & Discharge Plumbing

10' Lift · 10.8' TDH
Basement Floor Exterior Grade Water Basin 1/2 HP Check Valve 1-1/2" PVC Run (20') TDH: 10.8'

🛒 Sump Pump Plumbing Checklist

1/2 HP Cast Iron Sump Pump Rated 2,500 GPH at 10.8' head
1 Unit Check Amazon ›
1-1/2" Quiet Spring Check Valve Prevents water hammer and backflow
1 Valve Check Home Depot ›
12V Battery Backup Auxiliary Pump Essential backup for storm power outages
Recommended Check Amazon ›
🔧

Need a Licensed Plumber for Basement Flood Protection?

Improper check valve placement or undersized discharge piping can burn out motors and void homeowner insurance.

✓ Matching licensed basement waterproofing & plumbing pros in ZIP !
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📐 Engineering Principles & Formulas

All calculations adhere strictly to US Imperial standards and standard retail SKU yields (Quikrete, Home Depot, Lowe's, ASTM standards):

Formulas verified against US contractor standards and material packaging specifications.

Pre-Solved Dimension Calculators

14 Pre-Calculated Sizes

Jump directly to your exact dimensions with pre-solved material quantities and instant answers:

What Size Sump Pump for a 6 ft Lift & 15 ft Run (light water table)? › What Size Sump Pump for a 8 ft Lift & 20 ft Run (light water table)? › What Size Sump Pump for a 8 ft Lift & 25 ft Run (moderate water table)? › What Size Sump Pump for a 10 ft Lift & 20 ft Run (moderate water table)? › What Size Sump Pump for a 10 ft Lift & 30 ft Run (moderate water table)? › What Size Sump Pump for a 10 ft Lift & 40 ft Run (heavy water table)? › What Size Sump Pump for a 12 ft Lift & 20 ft Run (moderate water table)? › What Size Sump Pump for a 12 ft Lift & 30 ft Run (heavy water table)? › What Size Sump Pump for a 12 ft Lift & 50 ft Run (heavy water table)? › What Size Sump Pump for a 15 ft Lift & 20 ft Run (heavy water table)? › What Size Sump Pump for a 15 ft Lift & 40 ft Run (heavy water table)? › What Size Sump Pump for a 15 ft Lift & 50 ft Run (extreme water table)? › What Size Sump Pump for a 18 ft Lift & 30 ft Run (extreme water table)? › What Size Sump Pump for a 20 ft Lift & 40 ft Run (extreme water table)? ›

🔗 Free Contractor Website Embed Widget

Contractors, builders, and suppliers can embed this interactive Sump Pump GPH & TDH Sizing Calculator on their website for free.

<iframe src="https://www.yardandslab.com/embed/sump-pump-calculator" width="100%" height="650" frameborder="0" style="border:1px solid #e2e8f0;border-radius:12px;"></iframe>

❓ Frequently Asked Questions: Sump Pump GPH & TDH Sizing Calculator

Yes. Every calculation outputs standard US construction packaging and measurements: cubic yards, 40lb/60lb/80lb Quikrete bags, US short tons (2,000 lbs), fluid ounces, gallons, and linear feet matching Home Depot and Lowe's retail inventory.
Yes. Calculators default to a contractor-standard 10% waste factor to accommodate form flex, uneven subgrades, and spillage. You can adjust this to 5% or 15% using the interactive input controls.
Generic calculators rely on basic geometric boxes without considering physical building realities: corrugated pipe displacement in French drains, actual nominal post sizes (3.5" for 4x4, not 4.0"), 15% compaction factors for crushed aggregate, and IECC US Climate Zones.
Yes! Click the "Print / PDF" button on any calculator to generate a clean, branded one-page materials shopping list formatted for mobile or paper printout at the lumberyard.