Explosives Limited - construction division

Construction > Blasting Tables

Imperial Load Table
Metric Load Table
Metric and Imperial Volumes
Quantity Distance for safe storage
Rock Properties
Scaled Distances
Electrical Properties
Electric Detonators
Non-electric Detonators

Imperial Load Table

Explosives Column Loading Table at 1.0 g/cc
The table on this page is divided into three sections to make it easier to view data online. Formulas for the loading table can be found at the bottom of the page.

3/4" to 4 1/4" columns
Diameter	Load	Diameter	Load
inches	lb/foot	inches	lb/foot
3/4	0.19	2	1.36
7/8	0.26	2 1/4	1.72
1	0.34	2 1/2	2.13
1 1/8	0.43	2 3/4	2.58
1 1/4	0.53	3	3.06
1 3/8	0.64	3 1/4	3.60
1 1/2	0.77	3 1/2	4.17
1 5/8	0.90	3 3/4	4.79
1 3/4	1.04	4	5.45
1 7/8	1.20	4 1/4	6.15

4 1/2" to 9 1/4" columns
Diameter	Load	Diameter	Load
inches	lb/foot	inches	lb/foot
4 1/2	6.90	7	16.68
4 3/4	7.68	7 1/4	17.90
5	8.51	7 1/2	19.15
5 1/4	9.39	7 7/8	21.12
5 1/2	10.30	8	21.79
5 3/4	11.26	8 1/4	23.18
6	12.26	8 1/2	24.60
6 1/4	13.30	8 3/4	26.07
6 1/2	14.39	9	27.58
6 3/4	15.51	9 1/4	29.13

9 1/2" to 17" columns
Diameter	Load	Diameter	Load
inches	lb/foot	inches	lb/foot
9 1/2	30.73	12 1/4	51.10
9 7/8	33.20	12 1/2	53.20
10	34.05	12 3/4	55.35
10 1/4	35.77	13	57.54
10 1/2	37.54	13 3/4	64.38
10 5/8	38.44	14	66.74
11	41.20	14 1/2	71.59
11 1/4	43.09	15	76.61
11 1/2	45.03	15 1/2	81.81
11 3/4	47.01	16	87.17
12	49.03	17	98.40

Notes

Explosives load is based on 1.0g/cc. To achieve explosives load for other product densities, multiply load per foot by that product’s density.

Imperial Column Load Formula
lbs / ft = 0.34 X De² X d
(De = Diameter of Explosives in inches, d = Density of Explosives in g/cc)

Example

0.84 g/cc in 5" hole
Explosive Load: 8.51 X 0.84 = 7.15 lb/ft

Metric Load Table

19mm to 108mm columns
Diameter	Load	Diameter	Load
mm	kg/m	mm	kg/m
19	0.28	51	2.03
22	0.39	57	2.56
25	0.51	64	3.17
29	0.64	70	3.83
32	0.79	76	4.56
35	0.96	83	5.35
38	1.14	89	6.20
41	1.34	95	7.12
44	1.55	102	8.10
48	1.78	108	9.15

114mm to 235mm columns
Diameter	Load	Diameter	Load
mm	kg/m	mm	kg/m
114	10.26	178	24.82
121	11.43	184	26.6
127	12.66	191	28.5
133	13.96	200	31.4
140	15.32	203	32.4
146	16.74	210	34.5
152	18.23	216	36.6
159	19.78	222	38.8
165	21.40	229	41.0
171	23.08	235	43.3

241mm to 432mm columns
Diameter	Load	Diameter	Load
mm	kg/m	mm	kg/m
241	45.7	311	76.0
251	49.4	318	79.1
254	50.6	324	82.3
260	53.2	330	85.6
267	55.8	349	95.8
270	57.2	356	99.3
279	61.3	368	106.5
286	64.1	381	114.0
292	67.0	394	121.7
298	69.9	406	129.7
305	72.9	432	146.4

Notes

Explosives load is based on 1.0g/cc. To achieve explosives load for other product densities, multiply load per metre by that product’s density.

Metric Column Load Formula
kg / m = (0.785 X De² X d) / 1000
( d = Density of Explosives in g/cc)

Example

0.84 g/cc in 127mm hole
Explosive Load: 12.66 X 0.84 = 10.63 kg/m

Metric and Imperial Volumes

These charts (below) can be downloaded to (and printed from) your PC. Click on the PDF icon to download the relevant documentation you require. PDF (Portable Document Format) files may require Adobe Acrobat or Acrobat Reader to be viewable.

Description	File Size	Last Modified	PDF
Metric: Cubic Metres of Rock per Metre of Blasthole	25k	26/10/2000
Imperial: Cubic Yards of Rock per Foot of Blasthole	28k	26/08/2000

Quantity Distance for safe storage

Table of Distances
Natural Resources Canada, Explosives Regulatory Division has introduced revised Quantity-Distance (Q-D) criteria.
Existing licenses are ‘grandfathered’, ie., exempted from the new requirements. However, any new license, and any existing zone license in which the magazine is moved to a new location, must follow the new Q-D principles. Notes and examples of how to use this table can be found at the bottom of the page.

50 to 180 Kilograms (Kg)
Kg	D2	D4	D5	D6	D7	D8
50	10	30	180	45	270	400
60	10	32	-	45	-	-
70	10	33	-	46	-	-
80	11	35	-	48	-	-
90	11	36	-	50	-	-
100	12	38	-	53	-	-
120	12	40	-	55	-	-
140	13	42	-	60	-	-
160	14	44	-	63	-	-
180	14	46	-	65	-	-

200 to 800 Kilograms (Kg)
Kg	D2	D4	D5	D6	D7	D8
200	15	47	-	65	-	-
250	16	51	-	70	-	-
300	17	54	-	75	-	-
350	17	57	-	80	-	-
400	18	59	-	83	-	-
450	19	62	-	88	-	-
500	20	64	-	90	-	-
600	21	68	-	95	-	-
700	22	72	-	100	-	400
800	23	75	-	105	-	415

900 to 3,500 Kilograms (Kg)
Kg	D2	D4	D5	D6	D7	D8
900	24	78	-	108	-	430
1,000	24	80	-	113	-	445
1,200	26	86	-	120	-	475
1,400	27	90	-	125	-	500
1,600	29	94	-	130	-	520
1,800	30	98	-	135	-	540
2,000	31	105	180	140	270	560
2,500	33	110	185	153	275	610
3,000	35	120	205	163	305	640
3,500	37	125	220	170	330	680

4,000 to 16,000 Kilograms (Kg)
Kg	D2	D4	D5	D6	D7	D8
4,000	39	130	235	178	350	710
5,000	42	140	255	190	380	760
6,000	44	150	270	203	405	810
7,000	46	155	285	213	425	850
8,000	48	160	300	223	445	890
9,000	50	170	310	235	465	930
10,000	52	175	320	240	480	960
12,000	55	185	340	255	510	1,020
14,000	58	195	360	270	540	1,080
16,000	61	205	375	280	560	1,120

18,000 to 90,000 Kilograms (Kg)
Kg	D2	D4	D5	D6	D7	D8
18,000	63	210	390	295	590	1,180
20,000	66	220	405	305	610	1,220
25,000	71	235	435	325	650	1,300
30,000	75	250	460	345	690	1,380
35,000	79	265	485	365	730	1,460
40,000	83	275	510	380	760	1,520
50,000	89	295	550	410	820	1,640
60,000	94	315	580	435	870	1,740
70,000	99	330	610	460	920	1,840
80,000	105	345	640	480	960	1,920
90,000	110	360	670	500	1,000	2,000

Using the table: columns D1 to D8
D1 & D3 As these apply primarily to factory operations, they have been deleted here.
D2 This is the distance that is required to separate two magazines, provided that there is an effective barricade between them.
D4 This is the required distance between a magazine and a very lightly traveled road.
D5 This is the distance required from a magazine to most roads and highways. Note that there is an overriding minimum distance of 180m.
D6 This is the distance between unbarricaded magazines.
D7 This column is called inhabited Building Distance. It applies to very busy roads (more than 5000 vehicles in a 24 hour period) and to buildings where people may assemble. Note that there are minimum distances (new requirements): 270m to an isolated inhabited building and 400m to groups of buildings.
D8 This is the distance (new requirement) from a magazine to a building of vulnerable construction. Vulnerable construction includes high-rises, schools, hospitals, etc. Note that this is twice the normal inhabited Building Distance found in D7. There is an overriding distance of 400m.

UN Classification System for Blasting Explosives
Under the United Nations classification system, blasting explosives are either Hazard Division 1.1 or 1.5 (detonator sensitive or booster sensitive). The table treats them both the same. For quantities larger than 90,000 kg., contact your regional inspector.

Differences with old table: no interpolation for intermediate values
The new table is used the same way as the old table except that interpolation for intermediate values is not done.

Example 1: You want to store 5500 kg. Since there is no entry for 5500 kg., choose the next highest quantity (6000 kg.) and find the required storage distances for storing 6000 kg.

Example 2: You’ve measured 500m to the nearest house, and you want to know how much you can store. Since there is no entry for 500m under D7, find the next lowest distance value, 480m. (480m allows 10,000 kg. if there is no other limiting factor.)

Daytime storage in a ‘day-box’
The table does not apply to daytime storage in a ‘day-box’ under the jurisdiction of a provincial or territorial Occupational Health and Safety authority.

Rock Properties

Rock Properties
The reference table below shows the average weight of various solid materials. Formulas used in these calculations can be found at the bottom of the page.

Material	Specific Gravity	Tons/Cubic Yard
Andesite	2.5 - 2.8	2.11 - 2.36
Basalt/Traprock	2.8 - 3.0	2.36 - 2.53
Coal - Anthracite	1.3	1.08
Coal - Bituminous	1.1 - 1.4	0.92 - 1.18
Copper Ore	2	1.89
Diabase	2.6 - 3.0	2.19 - 2.53
Diorite	2.8 - 3.0	2.36 - 2.53
Dolomite	2.8 - 2.9	2.36 - 2.44
Earth (dry)	1.6 - 1.8	1.35 - 1.52
Earth (wet)	2	1.6875
Gneiss	2.6 - 2.9	2.19 - 2.44
Granite	2.6 - 2.7	2.19 - 2.28
Gypsum	2.3 - 2.8	1.94 - 2.36
Iron Ore	4.5 - 5.3	3.79 - 4.47
Lead Ore (Galena)	7.5	6.21
Limestone	2.3 - 2.7	1.94 - 2.28
Marble	2.4 - 2.7	2.02 - 2.28
Mica, schist	2.5 - 2.9	2.09 - 2.43
Quartzite	2.6 - 2.8	2.19 - 2.36
Rhyolite	2.4 - 2.6	2.02 - 2.19
Rock Salt	2.5 - 2.6	2.11 - 2.19
Sandstone	2.2 - 2.8	1.85 - 2.36
Shale	2.4 - 2.8	2.02 - 2.36
Slate	2.7 - 2.8	2.28 - 2.36
Talc	2.6 - 2.8	2.19 - 2.36

Calculation formula(s)
Density (in lb/cu ft.) = SG x 62.4

Density (SI units) = SG x Density of water
(1.0 g/cc or 1,000 Kg/cu in.)

Scaled Distances

OSM Scaled Distance Requirement
The table on this page is divided into three sections to make it easier to view data online.

From 25 feet to 300 feet
D (feet)	Ds = 50 (0-300') W (lbs)
25	0.25	-	-
50	1	-	-
75	2.25	-	-
100	4	-	-
200	16	-	-
300	36	-	-

From 400 feet to 5,000 feet
D (feet)	Ds = 55 (301-5000') W (lbs)

400	-	52	-
500	-	82	-
600	-	119	-
700	-	161	-
800	-	211	-
900	-	267	-
1,000	-	330	-
1,500	-	743	-
2,000	-	1,322	-
3,000	-	2,975	-
4,000	-	5,289	-
5,000	-	8,264	-


D (feet)	Ds = 65 (5001' +) W (lbs)
6,000	-	-	8,520
7,000	-	-	11,597
8,000	-	-	15,147
9,000	-	-	19,171
10,000	-	-	23,668

Electrical Properties

Resistance of Copper Wire
AWG		Ohms per 1000 feet
No. 10		0.999
No. 12		1.59
No. 14		2.53
No. 16		4.02
No. 18		6.38
No. 20		10.15

Resistance of Orica Detonators
Feet	Meters	Copper	Iron
8	2.5	1.94	3.2
12	3.5	2.11	3.9
16	4.5	2.28	4.6
24	7	2.61	-
30	9	2.40	-
40	12	2.66	-
60	18	3.19	-

Electric Detonators

Electric Detonators
The table on this page is divided into four sections to make it easier to view data online.

Nominal Time MS from 3 to 225
	Period
Nominal Time MS	Electric MS	Electric LP	Electric Coal
3	0	-	-
25	1	1	1
50	2	-	-
75	3	-	-
100	4	1 1/2	2
125	5	-	-
150	6	-	-
175	7	-	3
200	8	2	-
225	9	-	-

Nominal Time MS from 250 to 475
	Period
Nominal Time MS	Electric MS	Electric LP	Electric Coal
250	10	-	4
275	11	-	-
300	12	2 1/2	-
325	13	-	5
350	14	-	-
375	15	-	-
400	16	3	6
425	17	-	-
450	18	-	-
475	19	-	-

Nominal Time MS from 500 to 1,200
	Period
Nominal Time MS	Electric MS	Electric LP	Electric Coal
500	20	-	7
550	22	-	-
600	24	4	8
650	26	-	-
700	28	-	9
750	30	-	-
800	-	5	10
900	-	-	11
1,000	-	6	12
1,200	-	7	-

Nominal Time MS from 1,400 to 5,100
	Period
Nominal Time MS	Electric MS	Electric LP	Electric Coal
1,400	-	8	-
1,600	-	9	-
1,900	-	10	-
2,200	-	11	-
2,500	-	12	-
2,900	-	13	-
3,300	-	14	-
3,800	-	15	-
4,400	-	16	-
5,100	-	17	-

Non-electric Detonators

Non-electric Detonators
The table on this page is divided into five sections to make it easier to view data online. (Items marked with an * asterix are not standard stock products)

Nominal Time MS from 0 to 225
	Period
Nominal Time MS	Exel LP	Exel MS, XT, SHD	Anodet
0	0	-	-
25	-	1	-
50	-	2	1
75	-	3	-
100	1/4	4	2
125	-	5	-
150	-	6	3
175	-	7	-
200	1/2	8	4
225	-	9	-

Nominal Time MS from 250 to 475
	Period
Nominal Time MS	Exel LP	Exel MS, XT, SHD	Anodet
250	-	10	5
275	-	11	-
300	3/4	12	6
325	-	13	-
350	-	14	7
375	-	15	-
400	1	16	8
425	-	17	-
450	-	18	9
475	-	19	-

Nominal Time MS from 500 to 950
	Period
Nominal Time MS	Exel LP	Exel MS, XT, SHD	Anodet
500	1 1/4	20	10
550	-	22	-
600	1 1/2	24	-
650	-	26	-
700	-	28	-
750	-	-	11
800	2	32	-
850	-	34*	-
900	-	36	-
950	-	38*	-

Nominal Time MS from 1,000 to 3,000
	Period
Nominal Time MS	Exel LP	Exel MS, XT, SHD	Anodet
1,000	2 1/2	40	12
1,200	3	48*	-
1,400	4	56*	-
1,500	-	-	13
1,600	5	64*	-
1,800	5 1/2	72*	-
2,000	6	80*	14
2,250	7	90*	-
2,500	8	-	15
3,000	9	-	16

Nominal Time MS from 3,500 to 9,000
	Period
Nominal Time MS	Exel LP	Exel MS, XT, SHD	Anodet
3,500	10	-	-
4,000	11	-	-
4,500	12	-	-
5,000	13	-	-
5,500	14	-	-
6,000	15	-	-
6,500	16	-	-
7,000	17	-	-
8,000	18	-	-
9,000	19	-	-