Operation
BS 65-V
wc_tx000918gb.fm
28
4.8
Selecting Ramming Stroke
The length of the ramming stroke directly affects the impact force
delivered by the rammer. Selecting the best level depends on job
requirements and soil conditions.
The label located inside the front cover indicates the general
compaction application, together with approximate throttle settings
and impact levels for each stroke level. It should be used as a general
guide when selecting ramming stroke.
Summary of Stroke and Throttle Settings
Stroke
Setting
Throttle
Position
Percussion
Blows/Min.
Stroke at
Ramming
Shoe
mm (in.)
Single-
Stroke
Impact in
kN (lbs.)
Applications
1
1/4–1/2
750
up to 25 (1)
9.2 (2040)
smoothing
2
1/2–3/4
650
up to 65
(2.6)
11.7 (2640)
normal compaction
3
3/4–full
load
650
up to 75 (3)
15.1 (3400)
heavy compaction
4
full load
600
up to 80
(3.2)
16.2 (3640)
wet and cohesive soils;
not for hard soils which
are difficult to compact
2
2
1
Содержание BS 65-V
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