Which number should an Artillery Shell Storage Container spec fix first?

Answer: Cell size and full-load weight. They drive cavity, wall and stack load.

Can the tolerance chain be one accumulated figure?

Answer: No. A single number leaves a mold change untraceable; per-link values point at the divider or the wall.

Is a thicker wall always safer?

Answer: No. It lengthens cooling and raises weight and price; deflection is set by rib pitch and base.

Are IP65 and a pressure hold the same thing?

Answer: No. IP65 covers dust and jets; the hold tests whether gas escapes.

Why split temperature into service and transport bands?

Answer: Transport sees extremes service does not, so test conditions differ. One band leaves transit damage without a criterion.

Artillery Shell Storage Container Specs: Size, Wall and Load

Quick answer: Artillery Shell Storage Container specs come from turning each requirement into a measured value: cavity and tolerance chain, wall and rib pitch, stack load, sealing class, temperature band.

Turning Requirements Into an Artillery Shell Storage Container Spec
Inside Dimensions and the Tolerance Chain
Wall Thickness and Rib Pitch
Converting Stack Load to the Base
Sealing Class and Temperature Range
FAQ

1. Turning Requirements Into an Artillery Shell Storage Container Spec

Specification starts before the drawing. Twelve rounds, a four-person carry, three months outdoors without damp becomes three parameter groups: cavity division, full-load weight and sealing class. The first page of an Artillery Shell Storage Container spec should be a mapping table, not an assembly view.

Set boundary conditions first: body diameter, length, stowage orientation, foam thickness. A 122 mm body laid flat with 10 mm of foam each side needs a 132 mm cell; upright, add 15 mm above the nose.

Stated need	Parameter	Example value
Twelve rounds	Cavity and dividers	132 by 132 by 372 mm
Four-person carry	Full-load weight	96 kg maximum
Three months outdoors	Sealing class	IP65 plus decay test
Five-tier stack	Base load	384 kg at 2.5x

Load and sealing stay fixed; colour is open.

2. Inside Dimensions and the Tolerance Chain

The cavity is three numbers plus the divided cell: 604 by 468 by 372 mm, a 4 mm divider, cells of 132 by 132 by 372 mm. Each needs a tolerance, or a box that will not accept a round still passes inspection.

Artillery Shell Storage Container: light grey case open on white, black gasket in the lid rim, clear tubs in the cavity, four latches

The chain runs backward from the cell: 1.2 mm at the cell, 0.4 mm at the divider, 0.8 mm at the inner wall, 0.5 mm at lid depth, 2.8 mm accumulated. More links loosen the end, so mold the divider with the body.

Datums belong on the drawing: outer base plane as A, rim as B, every dimension driven from those two. Shrinkage is compensated at 1.6 percent, so the 604 mm side is cut 10 mm oversize. At 2.8 mm accumulated, size the gap on the worst case; foam holds 15 percent reserve.

3. Wall Thickness and Rib Pitch

Thicker is not stronger. A 3.2 mm side wall, 4.5 mm base and 3.0 mm lid is the usual split: the base takes stacking, the lid stays light. Oversized sides stretch cooling, and in a 210-second cycle each extra millimetre costs 12 seconds.

Rib pitch sets stiffness: 120 mm pitch, 8 mm height, R3 root, 100 mm under the base. Tighter ribs fight ejection, wider ones bulge under vacuum. Draft goes on the drawing at 1.2 degrees and mold temperature at 38 C, or trial molding depends on the operator.

4. Converting Stack Load to the Base

Stack load is calculated from the bottom up. At 96 kg full and five tiers, the bottom case carries 384 kg; a 2.5x factor gives a 960 kg test held 24 hours, residual set under 1.5 mm an hour after release.

Artillery Shell Storage Container: olive case open on a workshop bench, egg-crate foam in the lid, die-cut foam below, tools beside

The base follows: grid ribs plus four corner bosses 12 mm high, 65 mm fork clearance. Bosses push load into the corners, the grid shortens the centre span. Side stability needs a number: no tip-over at 25 mm offset, and 6 mm of engagement between lid recess and boss holds it inside 3 mm.

5. Sealing Class and Temperature Range

Sealing is written by scenario. Outdoor storage means IP65, dust class 6 and jet class 5, plus a 20 kPa hold for 60 seconds with decay under 1.5 kPa. Gasket compression sits at 25 to 30 percent, a 6.5 mm channel for an 8 mm cord, so an Artillery Shell Storage Container relies on depth, not latch force.

Item	Value	Method
Dust and water	IP65	12.5 litres per minute, 3 minutes
Air tightness	20 kPa, 60 seconds	Decay under 1.5 kPa
Gasket compression	25 to 30 percent	Channel and cord
Cold drop	minus 40 C, 0.8 m	Six faces, three corners

Temperature takes two bands: minus 30 to plus 60 C in service, minus 40 to plus 70 C in transport; HDPE nears embrittlement at the low end, so the drop height falls from 1.2 m to 0.8 m. Thermal growth belongs on the drawing too: a 604 mm cavity grows 2.9 mm over 40 K, so the long slot needs 3 mm of slip.

Conclusion

A specification is only as good as its numbers: cavity and tolerance chain, wall thickness and rib pitch, stack load, sealing class, temperature band. Each needs a test, or the drawing is a sketch. Put the table and its methods in the contract annex, and the Artillery Shell Storage Container spec becomes enforceable.

This article discusses only the container (case body) side of specifications and design intent, and does not cover any handling, loading or use of the contents.