CONCRETE PIPE Concrete Pipe Handling and Installation Contractor Installation Notes Although each shipment of pipe is blocked and tied down by the hauler, inspect each pipe shipment upon arrival before unloading. Set aside damaged pipe and notify the pipe plant so that repair or replacement can be arranged. Damaged ends, chips or cracks that do not pass through the wall can usually be repaired. Provide padding between the pipe and lifting device to avoid damage during offloading. Stockpile pipe with all the bells arranged at the same end. If stacking pipe, each row should be arranged in the opposite direction with the spigot end protruding to keep the bells from resting on them. Ensure that the bottom row of stockpiled pipe is securely blocked at each end. All flexible gasket materials, including joint lubricating compounds, should be stored in a cool dry place. Rubber gaskets and preformed bulk mastics should be kept clean, away from oil, grease, excessive heat and out of the sun. Gaskets are made so that a precise volume of rubber is used from each joint, to provide a long lasting, tight and flexible joint. O-ring gaskets for ASTM C76 & C361 pipe require a lubricant for proper installation. See “Gasket Installation” on the following page for gasket and lubrication procedures. Do NOT transport pipe over uneven ground using lift anchors – this dynamic loading may cause damage to the lift anchor and concrete. Care must be taken not to tamper with lift pins. Tampering would include heating, hammering, welding, or side loading the pins or anything else that could damage the pin or concrete. Keep the trench clean and dewatered with a firm bottom free of mud, taking care to prevent foreign material from entering the joint or pipe. Before the pipe is installed a bell hole must be dug in the bedding to accommodate the bell. Failure to do this can cause beam breaks or cracks in the barrel of the pipe. During insertion of the spigot into the bell, before the pipe is homed, the pipe should be partially supported to minimize lateral pressure on the gasket and to maintain concentricity until the gasket is properly positioned. Once the bell and spigot have been carefully aligned, the pipe must be homed with a direct thrust and not moved from side to side as it enters the bell. Proper homing can be achieved with blocks and lever bars, or mechanical ‘come-alongs’ suitably braced to ensure even entry into the bell. Back hoes and tractors are NOT recommended for this purpose. If the bell and spigot are not carefully aligned, the gasket will be displaced causing a leak or splitting of the bell. Label A B C D Length of Chain 1440 400 1040 1940 Lifting Chain Diagram PAGE 60 LAFARGE PIPE eMANUAL