Dywidag Rock Bolts 4np3d
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DYWIDAG Rock Bolts Advantages and Characteristics high loads with small borehole diameters continuous bar thread allows cutting at any point, length adaptation on site, easy to order and to
← ← store
← ← ← ← ← ←
coarse thread, insensitive to rough handling high bond along the bar length for anchoring into resin or cement mortar good mixing of resin cartridges through the thread ribs restressing possible angle compensation through dished plates, spherical seats or domed nuts expansion shell enables quick load transfer type of bar
GEWI
GEWI
®
GEWI
®
bar with left-hand thread
Plus with right-hand thread
®
bar with right-hand thread
THREADBAR
®
with right-hand
nominal diameter
steel grade
max. diameter over cross-sectional area ribs A
load at yield
[mm]
[N/mm2]
[mm]
[mm2]
[kN]
16
500/550
18
201
101
20
500/550
23
314
157
25
500/550
28
491
246
28
500/550
32
616
308
32
500/550
36
804
402
18
670/800
21
254
170
22
670/800
25
380
255
25
670/800
28
491
329
28
670/800
32
616
413
30
670/800
34
707
474
16
450/700
18
207
93
15
900/1100
18
177
159
u
thread
26,5
950/1050WR
31
552
525
32
950/1050WR
36
804
760
Expansion Shell Anchor (with or without cement grout)
1. 2. 3. 4. 5.
SN Anchor
dished plate domed anchor nut threadbar cement grout expansion shell
1. 2. 3. 4.
anchor plate hex nut threadbar cement grout
Resin Bolt
1. 2. 3. 4. 5. 6.
dished plate hex nut calotte washer threadbar cement grout resin Fields of Application tunnel and shaft construction cavern construction mining slope stabilization attachments, e. g. formwork
DYWIDAG Rock Bolts - Anchorages Anchorage with domed nut and dished plate
steel grade
nominal diameter
order No. plate
plate dimensions
order No. nut
[N/mm2]
[mm]
450/700
16
16 W 2134
80x80x10
16 W 2014
500/550
16
16 T 2079
120x120x5
16 T 2056
500/550
20
20 T 2182
150x150x8
20 T 2044
500/550
25
25 T 2182
150x150x8
25 T 2044
500/550
28
28 T 2182
150x150x10
28 T 2044
500/550
32
32 T 2182
180x180x12
32 T 2044
670/800
18
18 TR 2182
150x150x10
18 TR 2001
670/800
22
22 TR 2182
150x150x10
22 TR 2001
670/800
25
25 TR 2182
200x200x12
25 TR 2001
670/800
28
28 TR 2182
200x200x12
28 TR 2001
670/800
30
30 TR 2182
200x200x12
30 TR 2001
[mm]
Ancchorage with hexagon nut, spherical seat and dished plate
steel grade
[N/mm2]
nominal diameter
[mm]
order No. plate
plate dimensions
[mm]
order No. nut
order No. spherical seat
500/550
16
16 T 2131
150x150x8
16 T 2002
16 T 2130
500/550
20
20 T 2131
150x150x8
20 T 2002
20 T 2130
500/550
25
25 T 2131
180x180x8
25 T 2002
25 T 2130
500/550
28
28 T 2131
200x200x10
28 T 2002
28 T 2130
500/550
32
32 T 2131
200x200x12
32 T 2002
32 T 2130
900/1100
15
15 F 2131
150x150x8
15 F 2002
15 F 2130
further plate dimensions available on request Anchorage for rock bolts with steel grade St950/1050
steel grade
nominal diameter
order No. plate
plate dimensions
order No. nut
[N/mm2]
[mm]
950/1050
26,5
26 WR 2011
150x150x35
26 WR 2001
950/1050
32
32 WR 2011
180x180x40
32 WR 2001
[mm]
DYWIDAG Rock Bolts - Accessories Expansion Shell
borehole type diameter DSI
for bar sizes
rock
quality
[mm]
15F 16T 16W 18TR 20T 20W 22TR 25T 25TR 26WR 28T 28TR 30TR 32T
33/37
2128
hard
34/38
2184
potassium
34/38
2185
medium hard
34/38
2135
hard
39/46
2117
hard
44/47
2185
potassium
43/48
2136
hard
50/58
2137
hard
59/60
2221
hard
Expansion shells for TR grade bars on request only
Required resin cartridge volumes
Selection criteria
underground
expansion shell
resin
cemen
limited
limited
y
30 N/mm2
low
lo
yes
limited
y
corrosion protection
yes*
yes
y
fast loading
yes
yes
n
stressing
yes
yes**
n
limited
yes
y
yes
yes
n
usable in cleft ground conditions
required strength of rock
suited for wet borehole
Application technique
suited for advance through blasting
sensible for deviations of the borehole diameter * expansion shell anchor with cement grout injection
**if free length is guaranteed
← ← store
← ← ← ← ← ←
coarse thread, insensitive to rough handling high bond along the bar length for anchoring into resin or cement mortar good mixing of resin cartridges through the thread ribs restressing possible angle compensation through dished plates, spherical seats or domed nuts expansion shell enables quick load transfer type of bar
GEWI
GEWI
®
GEWI
®
bar with left-hand thread
Plus with right-hand thread
®
bar with right-hand thread
THREADBAR
®
with right-hand
nominal diameter
steel grade
max. diameter over cross-sectional area ribs A
load at yield
[mm]
[N/mm2]
[mm]
[mm2]
[kN]
16
500/550
18
201
101
20
500/550
23
314
157
25
500/550
28
491
246
28
500/550
32
616
308
32
500/550
36
804
402
18
670/800
21
254
170
22
670/800
25
380
255
25
670/800
28
491
329
28
670/800
32
616
413
30
670/800
34
707
474
16
450/700
18
207
93
15
900/1100
18
177
159
u
thread
26,5
950/1050WR
31
552
525
32
950/1050WR
36
804
760
Expansion Shell Anchor (with or without cement grout)
1. 2. 3. 4. 5.
SN Anchor
dished plate domed anchor nut threadbar cement grout expansion shell
1. 2. 3. 4.
anchor plate hex nut threadbar cement grout
Resin Bolt
1. 2. 3. 4. 5. 6.
dished plate hex nut calotte washer threadbar cement grout resin Fields of Application tunnel and shaft construction cavern construction mining slope stabilization attachments, e. g. formwork
DYWIDAG Rock Bolts - Anchorages Anchorage with domed nut and dished plate
steel grade
nominal diameter
order No. plate
plate dimensions
order No. nut
[N/mm2]
[mm]
450/700
16
16 W 2134
80x80x10
16 W 2014
500/550
16
16 T 2079
120x120x5
16 T 2056
500/550
20
20 T 2182
150x150x8
20 T 2044
500/550
25
25 T 2182
150x150x8
25 T 2044
500/550
28
28 T 2182
150x150x10
28 T 2044
500/550
32
32 T 2182
180x180x12
32 T 2044
670/800
18
18 TR 2182
150x150x10
18 TR 2001
670/800
22
22 TR 2182
150x150x10
22 TR 2001
670/800
25
25 TR 2182
200x200x12
25 TR 2001
670/800
28
28 TR 2182
200x200x12
28 TR 2001
670/800
30
30 TR 2182
200x200x12
30 TR 2001
[mm]
Ancchorage with hexagon nut, spherical seat and dished plate
steel grade
[N/mm2]
nominal diameter
[mm]
order No. plate
plate dimensions
[mm]
order No. nut
order No. spherical seat
500/550
16
16 T 2131
150x150x8
16 T 2002
16 T 2130
500/550
20
20 T 2131
150x150x8
20 T 2002
20 T 2130
500/550
25
25 T 2131
180x180x8
25 T 2002
25 T 2130
500/550
28
28 T 2131
200x200x10
28 T 2002
28 T 2130
500/550
32
32 T 2131
200x200x12
32 T 2002
32 T 2130
900/1100
15
15 F 2131
150x150x8
15 F 2002
15 F 2130
further plate dimensions available on request Anchorage for rock bolts with steel grade St950/1050
steel grade
nominal diameter
order No. plate
plate dimensions
order No. nut
[N/mm2]
[mm]
950/1050
26,5
26 WR 2011
150x150x35
26 WR 2001
950/1050
32
32 WR 2011
180x180x40
32 WR 2001
[mm]
DYWIDAG Rock Bolts - Accessories Expansion Shell
borehole type diameter DSI
for bar sizes
rock
quality
[mm]
15F 16T 16W 18TR 20T 20W 22TR 25T 25TR 26WR 28T 28TR 30TR 32T
33/37
2128
hard
34/38
2184
potassium
34/38
2185
medium hard
34/38
2135
hard
39/46
2117
hard
44/47
2185
potassium
43/48
2136
hard
50/58
2137
hard
59/60
2221
hard
Expansion shells for TR grade bars on request only
Required resin cartridge volumes
Selection criteria
underground
expansion shell
resin
cemen
limited
limited
y
30 N/mm2
low
lo
yes
limited
y
corrosion protection
yes*
yes
y
fast loading
yes
yes
n
stressing
yes
yes**
n
limited
yes
y
yes
yes
n
usable in cleft ground conditions
required strength of rock
suited for wet borehole
Application technique
suited for advance through blasting
sensible for deviations of the borehole diameter * expansion shell anchor with cement grout injection
**if free length is guaranteed
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