Document Text Contents
Page 2
C O M M E M O R A T I O N
James Jonathan (Smitty) Smith
Page 30
PAGE 26 S T RU C T U R A L S T E E L E R E C T I O N BEST PRAC TICES
4.13 ANCHOR BOLTS (ANCHOR RODS)
NOTE: The term “anchor bolt” is commonly used; however, the Canadian
Standards Association standard CSA-S16 now uses the term “anchor rod.”
• A minimum of 4 anchor bolts are important on main structural columns to
ensure stability during erection, although it may not be a design
requirement to support the completed structure.
• Wherever possible, the 4 bolt anchor pattern should be symmetrical.
• This type of anchor bolt is manufactured by the steel fabricator using rod
specified by the design engineer (e.g., A307, 44W). The specifications must
include the diameter, embedment, and hook length of the anchor bolt.
Figure 4 Typical 4 anchor bolt column setting.
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S T RU C T U R A L S T E E L E R E C T I O N BEST PRAC TICES PAGE 27
SECTION 4
5.1 INSPECTIONS
• Careful consideration must be given to the ground conditions and the soil
compaction in areas in which cranes are to be moved and operated.
• If work is done or equipment is operated in the area of an energized
overhead power line, the employer must contact the power line operator to
determine the voltage of the power line, which determines the safe approach
distance. Until the power line operator verifies the voltage, the employer
must maintain a safe clearance distance according to OHS CODE PART 17.
• For lattice boom cranes, assemble the boom sections precisely according to
the manufacturer’s recommendations to attain the boom strength on which
the capacities in the load chart are based.
• On cranes operating with outriggers, the beams must be extended with the
pads down according to manufacturer’s recommendations. The ground
should be checked periodically for settling, and the outriggers reset if
necessary.
• If a crane makes its lift on rubber (without outriggers), ensure that the tires
are properly inflated; otherwise, the capacity and crane stability will be
reduced. Check the ground periodically for settling.
• Always use outrigger mats or pads to provide additional support for the
crane. In unstable surface conditions, cribbing may be needed, which should
be tightly spaced using rigid timbers.
Hoisting and Rigging
S e c t i o n 5
Page 60
S T RU C T U R A L S T E E L E R E C T I O N BEST PRAC TICES
TO ORDER THIS BOOKLET, OR FOR MORE INFORMATION, CONTACT:
an Alberta MHSA Office at www.mhsa.ab.ca
or an ACSA office at www.acsa-safety.org
C O M M E M O R A T I O N
James Jonathan (Smitty) Smith
Page 30
PAGE 26 S T RU C T U R A L S T E E L E R E C T I O N BEST PRAC TICES
4.13 ANCHOR BOLTS (ANCHOR RODS)
NOTE: The term “anchor bolt” is commonly used; however, the Canadian
Standards Association standard CSA-S16 now uses the term “anchor rod.”
• A minimum of 4 anchor bolts are important on main structural columns to
ensure stability during erection, although it may not be a design
requirement to support the completed structure.
• Wherever possible, the 4 bolt anchor pattern should be symmetrical.
• This type of anchor bolt is manufactured by the steel fabricator using rod
specified by the design engineer (e.g., A307, 44W). The specifications must
include the diameter, embedment, and hook length of the anchor bolt.
Figure 4 Typical 4 anchor bolt column setting.
Page 31
S T RU C T U R A L S T E E L E R E C T I O N BEST PRAC TICES PAGE 27
SECTION 4
5.1 INSPECTIONS
• Careful consideration must be given to the ground conditions and the soil
compaction in areas in which cranes are to be moved and operated.
• If work is done or equipment is operated in the area of an energized
overhead power line, the employer must contact the power line operator to
determine the voltage of the power line, which determines the safe approach
distance. Until the power line operator verifies the voltage, the employer
must maintain a safe clearance distance according to OHS CODE PART 17.
• For lattice boom cranes, assemble the boom sections precisely according to
the manufacturer’s recommendations to attain the boom strength on which
the capacities in the load chart are based.
• On cranes operating with outriggers, the beams must be extended with the
pads down according to manufacturer’s recommendations. The ground
should be checked periodically for settling, and the outriggers reset if
necessary.
• If a crane makes its lift on rubber (without outriggers), ensure that the tires
are properly inflated; otherwise, the capacity and crane stability will be
reduced. Check the ground periodically for settling.
• Always use outrigger mats or pads to provide additional support for the
crane. In unstable surface conditions, cribbing may be needed, which should
be tightly spaced using rigid timbers.
Hoisting and Rigging
S e c t i o n 5
Page 60
S T RU C T U R A L S T E E L E R E C T I O N BEST PRAC TICES
TO ORDER THIS BOOKLET, OR FOR MORE INFORMATION, CONTACT:
an Alberta MHSA Office at www.mhsa.ab.ca
or an ACSA office at www.acsa-safety.org
