EXPANSION ANCHOR

EXPANSION ANCHORS ARE TYPICALLY REQUIRED TO JOIN OBJECTS IN CONCRETE OR MASONRY.  THESE BOLTS CONSIST OF A STEEL CASING WITH FINS AT ONE END, AND A STANDARD SCREW INSERTED IN THE CENTER OF THE CASING.  INSTALLERS START BY DRILLING A HOLE, THEN INSERT THE BOLT BY HAND.  ONCE THE BOLT IS IN PLACE, A SCREWDRIVER OR DRILL IS USED TO TIGHTEN THE SCREW.  THIS PULLS THE SCREW UP INSIDE THE FINS OF THE BOLT, FORCING THESE FINS OUT TO THE SIDES.
USERS SHOULD KEEP IN MIND THAT AN EXPANSION ANCHOR IS ONLY AS STRONG AS THE MATERIAL IN WHICH IT IS INSTALLED.  THIS MEANS THAT AN EXPANSION ANCHOR WILL NOT HOLD IF THE SURROUNDING SURFACE IS WEAK OR BADLY DAMAGED.  EXPANSION ANCHORS MAY NOT BE SUITABLE FOR USE IN DAMAGED OR CRUMBLING CONCRETE OR SOFTER WOODS.
Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s