weber GENESIS 1500 LX - Manual (Page 15)

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Method 3 - Concrete
A 3/8 inch machine screw anchor, using a 3/8-16 x
1 1/2 inch machine screw and a flat washer. Figure 8.
Note - Use a 3/4 inch diameter concrete drill bit for drilling
the hole for the screw base. The machine screw anchor
requires a setting tool.
3/8-16 x 1 1/2 machine screw
3/8 inch flat washer
Mount plate
3/8 inch screw anchor
Drilled hole
Figure 8
Method 2 - Concrete
A concrete lag bolt, a minimum of 3/8 inch x 2 1/2 inches
long with a 3/8 inch diameter long lag shield and a 3/8 inch
flat washer. Figure 7.
Note - Use a 5/8 inch concrete drill bit for drilling the hole
for the lag shield.
Concrete lag bolt
3/8 inch flat washer
Mount plate
Lag shield
Drilled hole
Figure 7
Typical installation of the base for an existing
concrete patio, new pad or wood deck (continued)
Method 1 - Concrete
A strike anchor, a minimum size of 3/8 inch x 3 1/2 inches
long with a 3/8 inch flat washer and 3/8 inch nut. Figure 6.
Note - Use a 3/8 inch diameter concrete drill bit for drilling
the hole for the strike anchor.
Strike anchor
3/8 inch nut
3/8 inch flat washer
Mount plate
Drilled hole
Figure 6