512 EM 385-1-1 Chapters 16-22

Sections

16-8. General Requirements.

Overhead and Gantry Cranes

Assemble the crane as per the manufacturer's guidelines and ASME B30.2 or B30.17.
Clearly display the crane's rated load, ensuring visibility from the ground or floor.
Operators must secure outdoor cranes when not in use and halt operations if wind-indicating alarms sound.

Monorails and Under Hung Cranes

Construct and install as per the manufacturer's guidelines and ASME B30.17.
Clearly mark the rated load on the crane, ensuring legibility from the ground or floor.
Signal persons must correctly use the applicable hand signals.

Derricks

Provide load anchoring data to the relevant authority and ensure the derrick's components are suitable and securely anchored.
Avoid sudden movements when rotating a derrick and use taglines to control the load.
When not in use, properly secure the derrick boom as per the specified methods.

Handling Loads Suspended from Rotorcraft

Use hand signals in accordance with ASME B30.12.

Powered Industrial Trucks (PITs)/Telehandlers

Use PITs for hoisting only if permitted by the equipment manufacturer and follow the provided procedures.
Operators, riggers, and involved personnel must have documented proof of qualifications and adhere to the manufacturer's load rating capacities.

Knowledge Check Choose the best answer for the question.

16-15. Operators must halt overhead and gantry crane operations _____.

if wind-indicating alarms sound

if lightening is within 30 minutes of the project

when recommended by competent crane operators

when surpassing maximum stiffleg ratings

You forgot to answer the question!

EM 385-1-1 Paragraph 16-8 (aa.–ee.).

16-8. General Requirements. (aa.–ee.).

aa.  Overhead and Gantry Cranes.

(1)  The requirements in this paragraph 16-8.aa are supplemental requirements for temporary or permanent overhead and gantry cranes.  The requirements apply to overhead/bridge cranes, semi gantry, cantilever gantry, wall cranes, storage bridge cranes, and other LHE having the same fundamental characteristics regardless of how it travels (such as, on tracks, wheels), unless otherwise specified.

(2)  Assemble all load bearing foundations, anchorages, runways, and rail tracks following the crane manufacturer's instructions and ASME B30.2 or B30.17, as applicable.

(3)  Plainly mark the rated load of the crane on each side of the crane.

(a)  If the crane has more than one hoisting unit, mark each hoist or each of the load blocks.

(b)  Markings on the bridge, trolley, and load block must be legible from the ground or floor.

(4)  Warning Device.  Except for floor-operated cranes, install an alarm or other effective warning signal on each crane equipped with a power traveling mechanism.

(5)  Maintain proper clearance between the crane and any structure or object, any parallel running cranes, and any cranes operating at different elevations.

(6)  Make any necessary contact with runway stops or other cranes with extreme care and caution.  The operator must do so with particular care for the safety of persons on or below any of the cranes involved. The operator must be sure that all persons on the other cranes are aware of what is happening.

(7)  Operators of outdoor cranes must secure them when leaving.

(8)  When the wind-indicating alarm of a cab-operated outdoor crane sounds, stop all crane operations and properly secure and store the crane during the excessive wind conditions.

(9)  Signal persons must properly use the applicable hand signals.

bb.  Monorails and Under Hung Cranes.  (16-8.bb)

(1)  Construct and install crane runways, monorail tracks, track supports, and track control devices following the crane manufacturer's instructions and ASME B30.17.

(2)  Plainly mark the rated load of the crane on each side of the crane.

(a)  If the crane has more than one hoisting unit, mark each hoist or each of the load blocks.

(b)  Markings on the bridge, trolley, and load block must be legible from the ground or floor.

(3)  Signal persons must properly use the applicable hand signals.

cc.  Derricks.  (16-8.cc)

(1)  For permanent fixed locations, provide the following load anchoring data to the USACE supervisor/KO or COR.  For non-permanent installations, this data must be prepared by a QP.

(a)  Guy Derricks.

(a-1)  Maximum horizontal and vertical forces when handling rated loads with the particular guy slope and spacing stipulated for the application.

(a-2)  Maximum horizontal and vertical forces at the guy when handling rated loads with the particular guy slope and spacing stipulated for the application.

(b)  Stiffleg Derricks.

(b-1)  Maximum horizontal and vertical forces at the mast base when handling rated loads with the particular stiffleg slope and spacing stipulated for the application.
            (b-2)  Maximum horizontal and vertical forces at the stifflegs when handling rated loads with the particular stiffleg arrangement stipulated for the application.

(2)  Derrick booms, load hoists, and swinger mechanisms must be suitable for the derrick work intended and must be anchored to prevent displacement from imposed loads.

(3)  When rotating a derrick, avoid sudden starts and stops and limit the rotational speed so that the load does not swing out beyond the radius at which it can be controlled make sure to use tagline(s).

(4)  Do not allow the boom and hoisting rope systems to twist.

(5)  Notify the operator before handling ropes on a winch head.  When a winch head is used, the operator must be within reach of the power unit controls.

(6)  When securing the boom, engage the dogs or other positive holding mechanisms on the hoist.

(7)  When not in use, the derrick boom must be either:

(a)  Laid down;

(b)  Secured to a stationary member, as directly under the head as possible, by attaching a sling to the load block;

(d)  Secured against a stiffleg (for stiffleg derricks).

dd.  Handling Loads Suspended from Rotorcraft (see 1926.551 and FAA requirements). Use hand signals according to ASME B30.12.  (16-8.dd)

ee.  Powered Industrial Trucks (PITs)/Telehandlers.  (16-8.ee)

(1)  Do not use this equipment to hoist loads unless allowed by the equipment manufacturer and the manufacturer provides the procedures.

(2)  Operations involving the use of PITs to raise personnel and/or using rigging to transport or hoist loads or personnel require different operator skills and considerations than the standard PIT operations performed with this equipment. When PITs are used to transport personnel or hoist loads utilizing hooks, eyes, slings, chains, or other rigging, the following requirements apply:

(a)  Follow the procedures included in equipment manufacturer’s operating manual.

(b)  Equipment operators, riggers, and others involved in the transportation and hoisting operations must provide written proof of qualifications.

(d)  Operators must properly use and keep onsite a copy of each manufacturer's load rating capacities or charts for the approved attachments.