Ga. Code § 25-8-4

Current through 2023-2024 Legislative Session Chapter 709

Section 25-8-4 - Blasting standards; formulas and table

(a) In all blasting operations, except as otherwise provided in this chapter, the maximum peak particle velocity of any component of ground motion recorded on a three-component seismograph (where the components - transverse, vertical, and longitudinal - are arranged mutually perpendicular) shall not exceed two inches per second at the location of any dwelling house, public building, school, church, or commercial or institutional building normally occupied.

(b) For blast-to-structure distance greater than 300 feet, the standard table for maximum charge per delay shall be generated by the formula:

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where W is the weight of explosive in pounds and D is the distance in feet to the nearest dwelling house, public building, school, church, or commercial or institutional building normally occupied.

(c) The following table may be used for determining the weight of explosives to be used with a single delay period:

STANDARD TABLE OF DISTANCE
Distance in Feet	Weight in Pounds	Distance in Feet	Weight in Pounds
0-10	1/8	350	49
11-15	1/4	400	64
16-20	1/2	500	100
21-25	3/4	600	144
26-30	1.00	700	196
40	2.25	800	256
50	3.50	900	324
60	4.75	1000	400
70	6.00	1100	484
80	7.25	1200	576
90	8.50	1300	676
100	9.75	1400	784
110	11.0	1500	900
130	13.5	1600	1024
150	16.0	1700	1156
170	18.5	1800	1296
190	21.0	1900	1444
210	23.5	2000	1600
230	26.0	2500	2500
250	28.5	3000	3600
270	31.0	3500	4900
290	33.5	4000	6400
300	34.75	4500	8100

(d) For nontabulated distances of over 300 feet, the following formula shall be used:

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OCGA § 25-8-4