Silage Bunker & Pile Density, Capacity & Packing Calculator
Calculate dry matter compaction density (lbs DM/ft³), total stored wet and dry tonnage, tractor packing weight requirements, and daily face feedout removal rates for concrete bunker silos and drive-over piles.
Bunker Silo Dimensions
ft
ft
ft
Forage Moisture & Packing Operation
%
Corn silage is typically 32–36% DM (65% moisture).
lbs DM/ft³
Recommended minimum benchmark is ≥ 14.0 lbs DM/ft³.
tons/hr
Wet tons delivered to bunker per hour.
lbs/day
Wet pounds fed out daily across herd.
Silage Storage Capacity
OPTIMAL PACKING DENSITY
Total Wet Silage Tonnage
1,234 Tons
57,600 cu ft total volume
Total Dry Matter Tonnage
432 Tons DM
42.9 lbs wet / cu ft
Required Packing Tractor Weight
48,000 lbs
800 lbs per ton/hr rule of thumb
Daily Face Removal Depth
8.7 in / day
Exceeds 6" minimum anti-spoilage rate
Silage Feedout & Face Management
Total Bunker Face Area:
480 sq ft (40' W × 12' H)
Silage Days of Feeding Available:
165 Days
Recommended Tractor Ballast:
Two 24,000 lb tractors packing continuously
University of Wisconsin Silage Model
Dairy Science
Based on Holmes & Muck silage density research: Achieving ≥ 14.0 lbs DM/ft³ prevents aerobic instability and yeast growth. To maintain density, the 800-lb rule requires (Harvest Tons/Hr × 800) in tractor packing weight. Minimum daily face feedout of 6–12 inches prevents heating and dry matter shrink loss.