trunk rotation while working in a trench, placing sandbags under pipe.

sitting while travelling around site for more than 30 mins at a time.

kneeling, squatting and crouching while working at ground height to adjust chocks, in trenches and crawling through pipe for more than 30 mins at a time.

carrying slings and equipment around site greater than 20kg.

visual and auditory communication for safety around yard and site – physical dangers with depletion in sensory areas.

walking around site on uneven ground and getting in/out of trucks and vehicles using a single leg stance/rhomberg stance.

walking around site for more than 30 mins at a time.

repetitive squatting to pick up equipment, adjusting blocks and sandbags greater than 20kg.

standing with arms overhead while connecting slings to hook for more than 30 mins at a time.

standing during rigging and lift observing for more than 30 mins at a time.

waist to eye level lifting of slings onto hooks greater than 20kg.

floor to waist lifting of slinging equipment and sandbags greater than 20kg.

Ankle sprains/strains: Constant inversion/eversion movements to counteract uneven and unstable surfaces.Ĭritical physical job demands and other task requirements.

Hip joint inflammation: Hip flexor tightness due to prolonged squatting.

Knee joint sprain/strain: Prolonged squatting or weight bearing on knee joint.

Thoracic spine non-specific: Repetitive trunk rotation with variable load.

Shoulder joint complex impingement/strain: Forceful and repetitive movements of upper limbs.

Cervical joints non-specific: Prolonged neck extension or flexion whilst working in awkward positions.

Lumbar muscle non-specific strain: Prolonged forward bending/stooping.

Wrist, forearm and elbow strain: Repetitive tasks such as gripping involving the wrist and forearm increase risk of repetitive stress injuries.

Risks – potential musculoskeletal injuries

uneven and unstable terrain with variant degrees of gradient.

attach loads to rigging to provide support or prepare them for moving.

control movement of pipes through narrow spaces and into trenches.

manual handling of slings and lifting equipment.dismantle and store rigging equipment after use.Although not a physically demanding role, they are required to work on uneven ground and are constantly looking overhead watching the crane's hook. A dogman or rigger then directs the crane operator by either radio or hand signals to advise him when the load can be lifted and moved. They must work together to ensure the slings are safely placed on the equipment to be lifted and that the slings are loaded onto the crane's hooking correctly. A dogman or rigger specialises in the lifting/moving of large and heavy pipes and equipment.

Rigger 5.0 pdf