This standard outlines the specifications for power-operated rodding machines used to remove blockages in sewer lines. It details requirements related to engine characteristics, chassis construction, rod and coupling dimensions, accessory tools, lubrication, and operational controls to ensure effective and safe sewer maintenance. The code serves as a reference for manufacturers, buyers, and users involved with sewer cleaning equipment.
Overview
This standard outlines the specifications for power-operated rodding machines used to remove blockages in sewer lines. It details requirements related to engine characteristics, chassis construction, rod and coupling dimensions, accessory tools, lubrication, and operational controls to ensure effective and safe sewer maintenance. The code serves as a reference for manufacturers, buyers, and users involved with sewer cleaning equipment.
Audience
Contents
Structure
This section defines the scope for power-driven rodding machines intended to clear sewer obstructions. It includes requirements for rods, couplings, and accessories, referencing material and dimensional standards. Guidelines for rounding numerical values as per IS 2-1960 are also summarized.
Covers construction specifications including rod and coupling dimensions and materials, adherence to quality standards, and accessory descriptions. Also explains rounding off procedures and provides typical rod size examples.
Outlines requirements for petrol or diesel engines with gear arrangements, including power output, maximum power take-off speed, cooling types, clutch and coupling mechanisms, starter types, control levers, accessory provisions, and lubrication diagrams.
Discusses fabrication of chassis from mild steel sections or tubes, wheel types, rear support options, handlebar controls, machine balance, and dimensional restrictions to prevent obstruction during operation.
Details rod length, diameter, material properties including corrosion resistance and elasticity, torque capacity, and coupling design to permit rotation and secure connections without disassembly during use.
Lists typical accessories such as rod coupling spanners, bar turning handles, hand ratchets, rod guides, push-pull tools, finishing tools, and rod reels. Also outlines attachment tools designed for different blockage types, including auger cutters and borers.
Specifies the comprehensive accessory set to be supplied with the rodding machine, including tools for rod handling and various attachment cutters, with notes on standards compliance and interim agreements.
Emphasizes the necessity for a clear lubrication diagram indicating points, lubricant types, and frequency. Maintenance instructions include adhering to lubrication schedules and inspecting components for wear.
Focuses on machine sizing to avoid traffic obstruction, accessory selection per purchaser requirements, and rounding rules for test results. Highlights typical accessory functions related to safe and efficient sewer cleaning.
Provides guidelines on surface preparation, primer and finishing coat application, color selection, and adherence to rounding conventions for test data.
Describes operational range, component requirements such as flexible rods and couplings, protective guides, and portability. Includes a conceptual diagram illustrating the power transmission path from the unit to sewer pipes.
Frequently Asked
IS 11117 does not explicitly mandate exact engine power and speed values. However, typical engineering practice suggests that engines should deliver between 1.5 to 3.0 kW (approximately 2 to 4 horsepower) to provide adequate torque for clearing sewer blockages. The rotational speed of the rodding cable generally ranges from 200 to 300 revolutions per minute, balancing effective cleaning with operational control. The machine is designed to operate efficiently over distances up to 100 meters between manholes, ensuring smooth cable feeding and retrieval without risking pipe damage.
According to IS 11117, rods must be 1.0 meter in length with a minimum diameter of 7 mm, constructed from corrosion-resistant alloy steel that can endure torque up to 26 kg-m and maintain elasticity when bent at 90 degrees. Each rod features one male and one female screwed sleeve, with ends bent at 90 degrees to offer secure anchorage and allow rotation without disconnection. The coupling on the output shaft is typically a pin chuck, allowing quick rod attachment and detachment, which facilitates ease of assembly and reliable torque transmission.
IS 11117 Appendix A recommends a comprehensive set of accessories and attachment tools including rod coupling spanners, bar turning handles, hand ratchets, rod guide assemblies, push-pull tools with pins, finishing tools, and rod reels with stands for organized storage. Attachment tools designed for specific blockages include auger-type rod cutters for sand, silt, and roots; sand borers for rapid penetration of sand blockages; spearpoint borers with manganese-steel heads for breaking bottles, cans, and bricks; and drill point borers with four radial blades for tougher obstructions. These tools ensure efficient removal of various sewer blockages.
The chassis is fabricated using mild steel sections or tubes to provide a strong yet lightweight frame. It includes two wheels, preferably solid rubber cushion-tyred, to absorb shocks and enhance durability. A rear skid support or an additional third wheel is incorporated to prevent tipping and improve stability. The handlebar integrates twist grip-type clutch and throttle controls, enabling smooth and convenient operation. The overall design ensures the machine remains well-balanced during use and complies with dimensional restrictions to avoid obstruction of traffic or roadways.
The standard mandates a clear lubrication diagram that identifies all lubrication points, specifies the appropriate types of lubricants (such as grease or oil) for each location, and indicates the frequency of lubrication—daily, weekly, or monthly. Maintenance involves strictly following this lubrication schedule to ensure smooth functionality and minimize wear. Regular inspection for leaks or contamination at lubrication points is essential. Additionally, surface preparation and painting with one primer coat and two finishing coats prevent corrosion. Engine and accessory maintenance includes keeping clutch and throttle controls operational and ensuring availability of starter mechanisms and spare parts as specified.
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