- Part Number:1926
- Part Number Title:Safety and Health Regulations for Construction
- Subpart:1926 Subpart CC
- Subpart Title:Cranes and Derricks in Construction
- Standard Number:
- Title:Floating cranes/derricks and land cranes/derricks on barges.
- GPO Source:
Clearly mark the hazard areas by a combination of warning signs (such as, "Danger-Swing/Crush Zone") and high visibility markings on the equipment that identify the hazard areas. In addition, the employer must train each employee to understand what these markings signify.
The employer must ensure that the requirements for maximum allowable list and maximum allowable trim as specified in Table M1 of this section are met.
|Rated capacity||Maximum allowable list (degrees)||Maximum allowable trim (degrees)|
|Equipment designed for marine use by permanent attachment (other than derricks):|
|25 tons or less||5||5|
|Over 25 tons||7||7|
|Derricks designed for marine use by permanent attachment:|
|Any rated capacity||10||10|
The employer must ensure that the equipment is stable under the conditions specified in Tables M2 and M3 of this section. (Note: Freeboard is the vertical distance between the water line and the main deck of the vessel.)
|Operated at||Wind speed (mph)||Minimum freeboard (ft)|
|Rated capacity plus 25%||60||1|
|High boom, no load||60||2|
|Operated at||Wind speed|
|For backward stability of the boom:|
|High boom, no load, full back list (least stable condition)||90 mph.|
[75 FR 48169, August 9, 2010]