Husqvarna DS 700 Operator's Manual page 13

• When configured to use an Anchor Bolt & Washer (U),
the Vacuum System will not be used, the "slot cap" must
be removed from the Anchor Bolt Slot (V), and the four
Leveling Bolts (F) shall be adjusted so that the gasket will
not contact the mounting surface.
Single Pad Vacuum Assembly
The Single Pad Vacuum Assembly (R) can be ordered
as an accessory. The vacuum plate mounts under the
base (small base only) while the vacuum pump assembly
mounts above the base.
Dual Pad Vacuum Assembly
The Dual Pad Vacuum Assembly can be ordered as an
accessory. Two vacuum plates mount on either side of
the Small Base (Dual Pad Vacuum Assembly not for use
with Combination Base) while the vacuum pump assembly
mounts above the base.
Concrete Anchors and Anchor Bolts
Both drill stand bases, the small base and combination
base, can be secured to the mounting surface using a
concrete anchor and anchor bolt (See Diagrams B1, B2,
B3).
MACHINE SET-UP
EXPANSION ANCHORS
Expansion anchors have been avail-
able for at least 30 years. There are two
basic types that are distinguished by their
operating principles. The first, torque-
controlled expansion anchors, are
installed by inserting the anchor into the
drilled hole, and applying the prescribed
setting torque to the head or nut. A cone
at the bottom of the anchor is pulled up
into an expansion sleeve that expands
into the concrete with local crushing,
and providing both friction and local-
ized keying as load-transfer mechanisms.
Most have a beneficial follow-up expan-
sion characteristic that under tension
loading, the more the anchor bolt dis-
places upward out of the hole, the
greater the expansion forces.
There are several types available that
vary significantly in their ability to resist
static and dynamic loads. The heavy-duty
sleeve anchor (not to be confused with
the light duty sleeve anchor composed of
a sheet metal sleeve around a cone) can
resist dynamic loads as well as function
well in expected cracks in concrete.
Wedge anchors are the most common
type of torque-controlled expansion
anchor. Many have been tested for resist-
ing seismic loads and have received
ICBO ES Evaluation Report listings for
B1. Typical Expansion Type Concrete Anchor
such service.
B2. Concrete Anchor-Installed
Sleeve anchors are generally consid-
B3. Typical Installation Of Concrete Anchor To
ered light duty, and rely more on friction
and less on local crushing and keying of
the concrete. They can be used in hol-
low masonry.
The second major type of expansion
anchor is the displacement-controlled
E
U
A
(A1)
L
Vacuum (Combination) Base Assembly
Showing "Anchor Bolt" Configuration
Single Pad Vacuum Assembly
FIGURE 3. Mechanical Anchors
Dual Pad Vacuum Assembly
B2
B1
Drop-in Anchor
Anchor Rod (or Bolt).
FIGURE 4. Displacement-controlled Expansion Anch
sufficiently set, the anchor may experi-
J
F
V
Sleeve Anchor Torque-controlled
Expansion Anchor
B3
Self-drilling A

lo