Guidelines to set up reinforced concrete pipe (RCP)
Reinforced concrete pipes alias RCPs, are suitable for storm sewer systems and water sewer systems. The set up of these pipes is complicated since they are weighty and heavy equipments are required to shift and place them. Given below, the details about RCP handling and installation.
Handling Reinforced Concrete Pipe: Reinforced concrete pipes should be dealt with cautiously so that the bell is not damaged (the wide or flared end of the RCP) and spigot (the narrow end that is inserted into the bell of an adjacent pipe).
RCPs should not be pulled to the site. It is suggested that initially, the pipes should be unloaded with a nylon sling or other certified material to support the weight of the pipe, and make balance properly in the sling.
Excavating Reinforced Concrete Pipe: Prior to start the installation process, make sure to arrange the trench to adapt minimum two pipes so that it becomes possible to check that the installation will retain the necessary slope and the consequent trenching will not affect the pipe being installed as well as endanger the security of workers.
Once each RCP is installed, the line and grade levels should be examined properly. Keep in mind that the trench should be adequately wide to facilitate the workers installing and controlling the pipe securely.
It is recommended not to change the pipe alignment or grade with the pipe in the home position. Keep in mind that all through the installation process the pipes should not be supported on bells since it could damage them. The bedding material should not contain any debris and should retain a consistently level surface.
How to arrange joining surfaces of RCP: Prior to placing the RC pipe, it is required to cleanse all impurities from the joining surfaces of the bell of the pipe cautiously to provide perfect homing of the pipe.
Provide lubricant to the bell portion of the RCP with a brush or gloves. Check with the RCP manufacturer for suggested lubricants that should be used. Lubricant should be sufficient to prevent the gasket from rolling away and damaging the bell end.
Cleanse the spigot or tongue end of the pipe to seal the gasket properly. Lubricate the tongue end of the pipe along with the gasket recess. If the lubricating grease is inadequate, the gasket may twist out of recess. The gasket should be lubricated prior to arrange it on the tongue of the RCP.
How to set up RCP: To set up the RCP, the pipe should be managed with few workers. It is necessary to lubricate pipe bell and gasket not to utilize extra force.
Set up the gasket and apply a round object to level the gasket stretch. Pass the object frequently along the circumference to keep everything in exact location. When the gasket is not expanded, leaks may occur at the joint or the bell may crack. Align bell and spigot, and ensure that the gasket gets in touch with the entry taper.
Ensure the pipe is aligned with surveying or leveling instruments. If the pipe going to be installed contains a small diameter, a wood block should be arranged across the bell end of the pipe and pushed with a wedge bar to shift the pipe gradually into place. Continue pushing unless the pipe is entirely installed. When the pipe diameter remains somewhat bigger and heavier, the pipe pullers should be applied to install the pipe.
Backfilling Reinforced Concrete Pipe: Backfill material should be set cautiously along the pipe and compacted methodically. Backfill material should be arranged consistently in lifts on both sides of the pipe and fill the trench up one foot over the top of the pipe.
The material should not be bulldozed into the trench or provided directly on top of the pipe. The backfill material with large boulders should not be utilized since they will not be consolidated and may damage the pipe.
The material with roots or other organic material should not be used. Backfill should be arranged based on the geotechnical recommendations on particular backfill material.
Lastly, heavy construction equipment should not be operated over the pipe unless sufficient backfill is prepared or the pipe is sufficiently deep in order that it is not damaged.