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Site Investigation (BS 879)
Flush-Jointed & Coupled Casing
Site Investigation casing (threaded to BS 879 waterwell specification) is used in Shell and Auger style drilling and is carried out to ascertain ground conditions and enable sampling of soils for calculations. This type of casing is also known as waterwell casing and is used to line a borehole.
ØD (mm)
114.3
139.7
168.3
193.7
219.1
244.3
273.0*
323.9*
355.6*
406.4
457.0
508.0
559.0
610.0
660.0
711.0
762.0
813.0
T.P.I
4
4
4
4
4
4
4
4
4
4
4
4
4
4
3
3
3
3
W (mm)
8.0
8.0
9.5
9.5
9.5
9.5
11.0
11.0
11.0
12.5
12.5
12.5
12.5
12.5
15.0
15.0
15.0
16.0
ØB (mm)
98.3
123.7
149.3
174.7
200.1
225.5
251.0
301.9
333.6
381.4
432.0
483.0
534.0
585.0
630.0
681.0
732.0
781.0
Approx Weight (kg/m)
20.88
27.32
31.14
43.08
49.03
54.97
71.35
87.8
93.61
121.57
139.42
152.32
167.6
181.45
242.82
257.67
276.48
314.89
*Can be supplied in 12.7 mm wall as an alternative
BS 879 Coupled Waterwell Casing
Pipe Sizes
ØD (mm)
W (mm)
ØB (mm)
Weight
114.3
7.9
228.7
46.09
8.9
226.7
51.71
10.0
224.5
57.83
127.0
7.1
258.8
46.57
8.9
255.5
57.99
10.2
252.7
66.13
11.4
250.3
73.57
12.6
247.9
80.94
139.7
8.5
281.5
60.79
9.5
279.5
67.70
11.0
276.5
77.99
12.4
273.7
87.48
168.3
8.4
322.9
68.63
9.6
320.3
78.94
10.9
317.9
88.38
12.2
315.3
98.53
13.1
313.3
105.51
177.8
9.5
387.4
68.63
11.1
384.2
78.94
12.6
381.2
88.38
193.7
11.0
451.0
125.32
219.1
11.1
485.8
136.01
12.7
482.6
155.12
16.1
475.8
195.30
Pipe Sizes (cont)
ØD (mm)
W (mm)
ØB (mm)
Weight
244.5
7.9
228.7
46.09
8.9
226.7
51.71
10.0
224.5
57.83
273.1
7.1
258.8
46.57
8.9
255.5
57.99
10.2
252.7
66.13
11.4
250.3
73.57
12.6
247.9
80.94
298.5
8.5
281.5
60.79
9.5
279.5
67.70
11.0
276.5
77.99
12.4
273.7
87.48
339.7
8.4
322.9
68.63
9.6
320.3
78.94
10.9
317.9
88.38
12.2
315.3
98.53
13.1
313.3
105.51
406.4
9.5
387.4
68.63
11.1
384.2
78.94
12.6
381.2
88.38
473.1
11.0
451.0
125.32
508.0
11.1
485.8
136.01
12.7
482.6
155.12
16.1
475.8
195.30
Short Round Coupling Sizes
ØD (mm)
Øe (mm)
L (mm)
114.3
127.0
158.8
127.0
141.3
165.1
139.7
153.7
171.4
168.3
187.7
184.2
177.8
194.5
184.2
193.7
215.9
190.5
219.1
244.5
196.8
244.5
269.9
196.8
273.1
298.4
203.2
298.5
323.8
203.2
339.7
365.1
203.2
406.4
431.8
228.6
473.1
508.0
228.6
508.0
533.4
228.6
Supplied as 8 TPI Tapered V threads.
Either style of casing diameter up to 406mm can be supplied up to 6 metre effective, diameter above 406mm can be supplied up to 3 metre effective.
