Guide
Tare, net, gross — and the number that actually matters.
A common route to damaged equipment is using nominal capacity as a proxy for weight. A tote does not weigh 275 gallons. It weighs whatever 275 gallons of your specific liquid weighs, plus the container, and that figure is frequently much larger than people expect.
The short answer
Gross lb = (gallons × 8.34 × specific gravity) + tare lb. Water in a 275 is 2,429 lb gross. Caustic at SG 1.35 is 3,231 lb. Sulphuric acid at SG 1.83 is 4,332 lb. Check the gross against your forklift plate, your rack beam rating and your floor loading — in that order.
The math
Three lines of arithmetic.
Net weight
gallons × 8.34 × SG
The liquid alone. 8.34 lb per US gallon is water; specific gravity scales it.
Gross weight
net + tare
What the fork lifts. Tare is 85–150 lb for poly, 390–560 lb for stainless.
Point loading
gross ÷ number of feet
Roughly what each pallet foot puts through your floor or rack deck, assuming the load spreads evenly.
Reference
Loaded weights for common liquids.
Gross figures include a 135 lb tare for the 275 and 150 lb for the 330.
| Liquid | SG | 275 gal gross | 330 gal gross |
|---|---|---|---|
| Acetone / solvents | 0.79 | 1,947 lb | 2,324 lb |
| Diesel, fuel oil | 0.85 | 2,084 lb | 2,489 lb |
| Ethanol | 0.79 | 1,947 lb | 2,324 lb |
| Water, most aqueous | 1.00 | 2,429 lb | 2,902 lb |
| Latex paint | 1.25 | 3,002 lb | 3,590 lb |
| UAN 32 fertiliser | 1.32 | 3,162 lb | 3,783 lb |
| Caustic soda 32% | 1.35 | 3,231 lb | 3,865 lb |
| Corn syrup 42 DE | 1.42 | 3,392 lb | 4,058 lb |
| Sulphuric acid 93% | 1.83 | 4,332 lb | 5,187 lb |
| Ferric chloride 40% | 1.42 | 3,392 lb | 4,058 lb |
Equipment
Four weight mistakes that break things.
Mistake 01
Reading the forklift plate literally
Capacity plates state a rating at a specified load centre, usually 24 inches. A 48-inch tote has a load centre around 24 inches only if the forks are fully engaged and the tote is centred. Off-centre or partially engaged, effective capacity drops, and the truck's derating chart tells you by how much.
Mistake 02
Racking on bare beams
Most pallet bases are designed to sit on a flat surface and take a fork underneath, not to span two beams. Composite bases can deflect, then craze, then crack, often long after and often with liquid in them. Deck your racking unless the makers say otherwise.
Mistake 03
Double-stacking loaded units
A stacking limit assumes an intact lower unit at rest on a flat floor. Loaded, in transit, with road vibration and a cracked base you did not inspect, it is a different situation entirely. Do not double-stack loaded units in transit.
Mistake 04
Ignoring floor point loading
A 4,300 lb tote on a four-foot base puts over 1,000 lb through each contact patch. On a suspended slab, a mezzanine, or an older warehouse floor that figure deserves a check rather than an assumption.
Dimensions
Where each measurement is taken from.
Overall height
Floor to the top of the cap, including the pallet base. This is the number for doorways, container doors, box truck ceilings and shelf spacing. A 275 is 46 inches; add about 6 inches for a spill pallet underneath.
Footprint
The outer dimensions of the pallet base, not the cage. On a GMA-compatible unit this is 48 by 40 inches. The cage itself is slightly smaller, which is why totes nest closely on a trailer without touching.
Fork pocket height and width
Typically 4 inches of clearance and pockets around 9 inches wide on a four-way base. Two-way bases typically accept forks on the 40-inch faces only — relevant if your dock approach is fixed.
Discharge height
Centre of the outlet, usually 7 to 9 inches above the floor on a standard base. Too low for most drums and buckets, which is why tilting stands exist.
| Measurement | 275 gal | 330 gal | 220 gal |
|---|---|---|---|
| Overall height | 46 in | 53 in | 40 in |
| Footprint | 48 × 40 in | 48 × 40 in | 48 × 40 in |
| Fork pocket clearance | 4 in | 4 in | 4 in |
| Fork pocket width | 9 in | 9 in | 9 in |
| Discharge centre height | 8 in | 8 in | 8 in |
| Fill cap diameter | 6 in | 6 in | 6 in |
| Cage bar spacing | ~5 in | ~5 in | ~5 in |
| Height on spill pallet | 52 in | 59 in | 46 in |
Weight and dimension questions
What is the difference between tare, net and gross weight?
Tare is the empty container — bottle, cage, pallet, valve and cap. Net is the liquid alone. Gross is both together, and it is the only one your forklift, your racking and your floor care about. A 275-gallon tote has a tare of about 135 lb; fill it with water and the net is 2,294 lb and the gross is 2,429 lb.
How do I find the specific gravity of my liquid?
Section 9 of the safety data sheet, listed as specific gravity, relative density or density. If it is given as density in kg/m³, divide by 1,000. If it is given in lb/gal, divide by 8.34. Water is the reference at 1.0 and 8.34 lb per US gallon.
What forklift capacity do I need for IBC totes?
Work it out from the gross weight rather than a rule of thumb. A 275 of water is about 2,430 lb gross; a 275 of a dense acid can be over 4,300 lb. Compare that with the truck's capacity plate at the load centre and lift height you will actually use — capacity drops as the load centre moves out and, on many trucks, as lift height increases. If the margin is thin, use a higher-rated truck or a smaller container.
Can I rack IBC totes?
Yes, on racking rated for the loaded weight with a suitable deck. Unless the rack and container makers say otherwise, do not rack a tote on bare beams — most pallet bases are not designed to span, and composite bases in particular can deflect and eventually crack. Use wire mesh decking or solid shelf, verify the beam capacity against the gross weight with the rack manufacturer, and keep loaded totes on the lowest practical level.
Specific gravity
A working table of common products.
Section 9 of your safety data sheet is the authority. This is for planning before the sheet is in front of you, and for the products people most often forget to check.
| Product | SG | lb/gal | 275 net | 275 gross |
|---|---|---|---|---|
| Acetone | 0.79 | 6.59 | 1,812 lb | 1,947 lb |
| Ethanol, denatured | 0.79 | 6.59 | 1,812 lb | 1,947 lb |
| Isopropyl alcohol | 0.79 | 6.59 | 1,812 lb | 1,947 lb |
| Diesel, heating oil | 0.85 | 7.09 | 1,949 lb | 2,084 lb |
| Vegetable oil | 0.92 | 7.67 | 2,110 lb | 2,245 lb |
| Water | 1.00 | 8.34 | 2,294 lb | 2,429 lb |
| Propylene glycol | 1.04 | 8.67 | 2,385 lb | 2,520 lb |
| Sodium hypochlorite 12.5% | 1.20 | 10.01 | 2,752 lb | 2,887 lb |
| Latex paint | 1.25 | 10.43 | 2,867 lb | 3,002 lb |
| UAN 32 fertiliser | 1.32 | 11.01 | 3,027 lb | 3,162 lb |
| Caustic soda 32% | 1.35 | 11.26 | 3,096 lb | 3,231 lb |
| Sodium silicate | 1.39 | 11.59 | 3,188 lb | 3,323 lb |
| Corn syrup 42 DE | 1.42 | 11.84 | 3,257 lb | 3,392 lb |
| Ferric chloride 40% | 1.42 | 11.84 | 3,257 lb | 3,392 lb |
| Phosphoric acid 75% | 1.58 | 13.18 | 3,624 lb | 3,759 lb |
| Sulphuric acid 93% | 1.83 | 15.26 | 4,197 lb | 4,332 lb |
Racking
Beam capacities for two totes on a level.
Rack beam ratings are usually quoted per pair for a uniformly distributed load. A tote is a concentrated load on a few feet, which is not what the rating describes — so confirm the rating for this load with the rack manufacturer.
| Product | SG | Two 275s on one level |
|---|---|---|
| Empty units | — | 270 lb |
| Solvent | 0.79 | 3,894 lb |
| Water | 1.00 | 4,857 lb |
| Latex paint | 1.25 | 6,004 lb |
| UAN 32 | 1.32 | 6,325 lb |
| Caustic 32% | 1.35 | 6,462 lb |
| Corn syrup | 1.42 | 6,784 lb |
| Sulphuric 93% | 1.83 | 8,664 lb |
The four rules
- Rate against gross weight, never nominal capacity.
- Deck every level — wire mesh or solid shelf, so the base sits on a continuous surface.
- Loaded low. Full totes on the floor or first beam; empties up high where a fall does less.
- Leave the valve accessible, or somebody will eventually drain a tote in the rack.
Worked examples
Six weight calculations, shown.
The arithmetic is trivial and it is the step people skip. Here it is done, so the pattern is obvious.
| Scenario | Working | Result | Note |
|---|---|---|---|
| 275 gal of water | 275 × 8.34 × 1.00 = 2,294; + 135 tare | 2,429 lb | Close to a 3,000 lb truck's nameplate once derated |
| 275 gal of UAN 32 | 275 × 8.34 × 1.32 = 3,027; + 135 | 3,162 lb | Over a 3,000 lb nameplate |
| 330 gal of corn syrup | 330 × 8.34 × 1.42 = 3,908; + 150 | 4,058 lb | Check forklift, racking and floor |
| 220 gal of sulphuric 93% | 220 × 8.34 × 1.83 = 3,358; + 118 | 3,476 lb | 856 lb lighter than a 275 of the same acid |
| Two 275s of caustic on one rack level | 2 × ((275 × 8.34 × 1.35) + 135) | 6,462 lb | Confirm the beam pair rating |
| A trailer of 275s of water | 18 × 2,429 | 43,722 lb | Near a typical ~44,000 lb payload with 18, not 26 |
Measuring
Where each dimension is taken from.
Published because specification sheets disagree with each other, usually because they are measuring from different places.
| Dimension | Measured from | Includes | Excludes | Use for |
|---|---|---|---|---|
| Overall height | Floor to the top of the cap | Base, cage, bottle, cap | Spill pallet | Doorways, container doors, shelves |
| Bottle height | Base top to bottle shoulder | Bottle only | Base, cap | Rarely useful |
| Overall length and width | Outer edges of the pallet base | Base | Cage overhang if any | Footprint, racking, trailer fit |
| Cage footprint | Outer edges of the cage | Cage | Base | Rarely; the base is wider |
| Fork pocket clearance | Floor to pocket ceiling | — | — | Forklift tine thickness |
| Fork pocket width | Inner faces of the pocket | — | — | Tine width |
| Fork pocket spacing | Centre to centre | — | — | Carriage width |
| Discharge centre height | Floor to outlet centreline | Base | — | Gravity feeding into a vessel |
| Fill opening | Inner diameter of the neck | — | Cap | Mixers, dip tubes, probes |
| Stack height, 2 high | Floor to top cap of the upper unit | Both units | — | Ceiling clearance |