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ETA 19/0665 v03 of 22/01/2020 page 7 of 18
Table B4: Parameters for use of the Hilti Roughening tool TE-YRT
Associated components
Diamond coring
Roughening tool TE-YRT
Wear gauge RTG
d
0
[mm]
d
0
[mm]
Size
Nominal
Measured
18
17,9 to 18,2
18
18
20
19,9 to 20,2
20
20
22
21,9 to 22,2
22
22
25
24,9 to 25,2
25
25
28
27,9 to 28,2
28
28
30
29,9 to 30,2
30
30
32
31,9 to 32,2
32
32
35
34,9 to 35,2
35
35
Table B5: Installation parameters for use of the Hilti Roughening tool TE-YRT
Roughening time
t
roughen
Minimum blowing time
t
blowing
l
b
[mm]
t
roughen
[sec] = l
b
[mm] / 10
t
blowing
[sec] = t
roughen
[sec] + 20
0 to 100
10
30
101 to 200
20
40
201 to 300
30
50
301 to 400
40
60
401 to 500
50
70
501 to 600
60
80
> 600
t
roughen
[sec] = l
b
[mm] / 10
t
blowing
[sec] = t
roughen
[sec] + 20
Hilti roughening tool TE-YRT and wear gauge RTG
Hilti roughening tool
TE-YRT
Wear gauge
RTG
Annex B3
of ETA N° 19/0665
Intended Use
Parameters for use of the Hilti Roughening tool TE-YRT