27 CFR § 555.224 | eRegulations

Net weight of firework ^[1] (pounds)	Distance between magazine and inhabited building, passenger railway, or public highway ^[3]^[4] (feet)	Distance between magazines ^[2]^[3] (feet)
0-1000	150	100
1001-5000	230	150
5001-10000	300	200
Above 10000	Use table § 555.218

1.
Net weight is the weight of all pyrotechnic compositions, and exposive materials and fuse only.
2.
For the purposes of applying this table, the term “magazine” also includes fireworks shipping buildings for display fireworks.
3.
For fireworks storage magazines in use prior to (30 days from the date of publication of the final rule in the Federal Register), the distances in this table may be halved if properly barricaded between the magazine and potential receptor sites.
4.
This table does not apply to the storage of bulk salutes. Use table at § 555.218.

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