NOTE: With any kind of fixation methods (Bolts M20, Mechanical anchors or Chemical
anchors), the number of holes used mandatory is:
•
Gantry base plate : 12 max and 8 min holes used are acceptable
•
Table base plate : 10 max and 8 min holes used are acceptable
•
Floor base plate : 24 max and 12 min holes used are acceptable
we can have only 2 consecutive holes omitted.
NOTE: In case of floor plate configuration, the gantry base plate shall be mounted onto the
floor plate, but the table base plate shall not be mounted on the floor plate.
Pull out efforts and recommendations about chemical anchors not provided by GE.
The following table provides the recommended chemical anchors for Omega/LC base plates
and for the floor plate ordered locally that they could be used instead of bolts provided by GE.
Table 2-9: Chemical anchors Pull out efforts and recommendations
Gantry base plate Table base plate Table Omega Floor plate (to be ordered
locally)
Mark I on Illustration 2-62 J on Illustration 2-62 A on Illustration 2-63 K on Illustration 2-62
Pull out effort 736 daN per bolt if 12
used and 1992 daN per
bolt if 8 used
1120 daN per bolt if 10
used and 2000 daN per
bolt if 8 used
4432 daN per bolt with 4
bolts
272 daN per bolt if 24
used and 2008 daN per
bolt if 12 used
Number of holes in the
plate
12 max (8 min manda‐
tory)
10 max (8 min mandato‐
ry)
4 mandatory 24 max (12 min mandato‐
ry)
Recommended chemi‐
cal anchors example 1
Supplier HILTIHVU ad‐
hesive capsule + HAS
Anchor rod
Supplier HILTIHVU ad‐
hesive capsule + HAS
Anchor rod
Supplier HILTIHVU adhe‐
sive capsule + HAS An‐
chor rod
Supplier HILTIHVU adhe‐
sive capsule + HAS An‐
chor rod
Threaded rod M16 A4-70 / 333 131
5/8
M20 A4-70 / 333 135 3/4 M20 A4-70 / 333 135 3/4 M16 A4-70 / 333 131 5/8
Hole diameter in the
floor
18 mm
(11/16 in)
24 mm
(7/8 in)
24 mm
(7/8 in)
18 mm
(11/16) in
Hole depth in the floor 125 mm
(5 in)
170 mm
(6-5/8 in)
170 mm
(6-5/8 in)
125 mm
(5 in)
Minimum floor thick‐
ness
180 mm
(7 in)
220 mm
(8-1/2 in)
220 mm
(8-1/2 in)
180 mm
(7 in)
Max Tightening Torque 80 N.m
(59 ft-lb)
150 N.m
(110 ft-lb)
150 N.m
(110 ft-lb)
80 N.m
(59 ft-lb)
NOTE: The floor plate ordered locally needs to be in steel.
Refer to supplier technical documents for all specification and installation data about
chemical anchors.
Optima IGS 320, Optima IGS 330 Pre-Installation Manual
Direction 5537562-1-1EN, Revision 3
120 3 Room Structural Requirements
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