Avoiding Concrete Pipeline Failure: In the laying of pipelines, preventing concrete pipeline failure is crucial. Workers should:

• Minimize bends and support both horizontal and vertical pipelines to prevent additional loads on pipe clamps.
• Secure 90° bends in pipes with legs clamped to the ground to ensure stability.
• Attach vertical lines securely to the building, avoiding connections to cranes, hoist towers, scaffolding, or formwork.
• Regularly inspect all metal pipes and components to verify they are undamaged and meet pipeline specifications.
• Ensure flexible hoses are positioned safely, eliminating the risk of being run over by other on-site plant and equipment.

For more comprehensive details on concrete pipeline failure prevention, refer to Section 4.1.3 of the Concrete Pumping Code of Practice 2019.

Pipe Clamps: When utilizing quick-release pipe clamps on fixed lines:

• Confirm that the selected pipe clamps can handle the maximum concrete pressure in the pipeline.
• Use and engage locking pins with quick-release pipe clamps.
• Avoid using quick-release clamps without provisions for locking pins.
• Regularly inspect all pipe clamps, replacing any that are deformed or damaged.
• Follow the manufacturer's instructions for locking clamps, refraining from methods like hammering the quick-release clamp lever that may cause metal fatigue.

For detailed insights into avoiding concrete pipe clamp failure, consult Section 4.1.3 of the Concrete Pumping Code of Practice 2019.

Anchor Brackets: When installing anchor brackets on the concrete delivery pipe:

• Use anchor brackets and tie downs at intervals not exceeding three meters, unless otherwise directed by a competent person.
• Secure anchor brackets with bolts in accordance with the pump manufacturer's specifications or advice from an engineer.
• Employ high-load slip, torque-controlled friction-type post-installed anchors with a three-to-one factor of safety.
• Conduct pull-out load tests on chemical anchors to 125% of their working load, ensuring a three-to-one factor of safety.
• For overhead securing of pipes, use through bolts extending through the concrete slab rather than post-installed anchors.
• If post-installed anchors are used overhead, subject them to pull-out load tests at 125% of their working load.

Pipe Movement: To address excessive pipe movement in temporarily laid lines due to pump surging:

• Implement additional anchorage methods, particularly at bends and elbows, to restrict line movement.
• Install a short wire-braided high-pressure rubber hose meeting the pump's pressure rating between the concrete pump and pipelines, adhering to the manufacturer's recommendations.

For more detailed information on anchor brackets and pipe movements, check Section 4.1.3 of the  Concrete Pumping Code of Practice 2019 (PDF, 1.04 MB).