Establishment of pasteurized compost unit of capacity 35MT in public sector under HADP project at Doda

Amount

The existing brick boundary wall will be partially demolished to enlarge the entrance gate opening. Demolition will be carried out manually or using suitable mechanical tools, depending on wall thickness and site conditions. Prior to starting, the gate opening area will be marked clearly. All precautionary measures will be taken to avoid damage to adjacent structures. The wall portion between two defined vertical sections will be carefully dismantled up to the required height, typically from foundation or plinth level up to the top of the wall or coping level. Loose debris, mortar, and bricks will be collected and either reused or disposed of as per norms. Once the section is removed, edges of the remaining wall will be straightened and finished to receive the new gate frame. If required, existing columns will be strengthened or new support columns constructed with RCC or steel to accommodate the increased width. All work will conform to standard safety protocols and building norms.

Earth work in bulk excavation by manual means over areas (exceeding 30 cm in depth, 1.5 m in width as well as 10 m2 on plan) including disposal of excavated earth lead upto 50 meters and lift upto 1.5 m, as directed by Engineer-in-Charge.

Providing and laying in position cement concrete of specified grade including curing but excluding the cost of centring and shuttering. All work upto plinth level with: 1:4:8 (1 cement : 4 coarse sand : 8 graded stone aggregate 40 mm nominal size)

Providing and laying in position specified grade of reinforced cement concrete including curing but excluding the cost of centering, shuttering, finishing andreinforcement. All works upto plinth level1:1½:3 (1 cement : 1½ coarse sand : 3 graded stone aggregate 20 mm nominal size)

Providing and laying in position cement concrete of specified grade including curing but excluding the cost of centring and shuttering. All work upto plinth level with: 1:3:6 (1 cement : 3 coarse sand : 6 graded stone aggregate 20 mm nominal size)

Steel reinforcement for R.C.C. work including straightening, cutting, bending, placing in position and binding all complete upto plinth level Thermo-Mechanically Treated bars of grade Fe-500D or more.

Structural steel work in built up sections, trusses and framed work, including cutting, hoisting, fixing in position and applying a priming coat of approved steel primer all complete. Welded

Providing and fixing precoated galvanized iron profile sheets (size, shape and pitch of corrugation as approved by Engineer-in-charge) 0.50 mm (+ 0.05 %) total coated thickness with zinc coating 120 grams per sqm as per IS: 277, in 240 mpa steel grade, 5-7 microns epoxy primer on both side of the sheet and polyester top coat 15-18 microns. Sheet should have protective guard film of 25 microns minimum to avoid scratches during transportation and should be supplied in single length upto 12 metre or as desired by Engineer-in-charge. The sheet shall be fixed using self drilling /self tapping screws of size (5.5x 55 mm) with EPDM seal, complete upto any pitch in horizontal/ vertical or curved surfaces, excluding the cost of purlins, rafters and trusses and including cutting to size and shape wherever required

Providing and laying autoclaved aerated cement blocks masonry with150mm/230mm/300 mm thick AAC blocks in super structure above plinth level up to floor V level with RCC band at sill level and lintel level with approved block laying polymer modified adhesive mortar all complete as per direction of Engineer-in-Charge. (The payment of RCC band and reinforcement shall be made for separately).

Chicken mesh for plaster reinforcement should be made of galvanized iron (GI) with a wire gauge of 22 to 24 SWG (approximately 0.56 mm to 0.7 mm) and a hexagonal mesh opening of 12 mm to 20 mm. The mesh must be zinc-coated for corrosion resistance, especially in humid environments. Fixing should be done using galvanized nails, masonry nails, or screws with washers to ensure firm anchorage on the surface. For installation, first clean the AAC block surface thoroughly to remove dust and loose particles. Cut the mesh to the required size and overlap adjacent sections by at least 100 mm. Fix the mesh securely at 300 mm intervals, ensuring it is taut and flush with the surface. Apply a 10–12 mm thick base coat of 1:4 cement-sand plaster, embedding the mesh properly. Allow it to set for 24 hours before applying the final 4–6 mm thick finishing coat. After finishing, cure the surface regularly for at least 7 days to prevent shrinkage cracks and ensure proper bonding.

CEMENT PLASTER (IN FINE SAND) 12mm Cement plaster of mix: 13.1.1 1 : 4 ( 1 cement : 4 fine sand)

Wall Painting with acrylic emulsion paint of approved brand and manufacture to give an even shade. Two or more coats on new work

The electrical installation covers lighting, switching, and power socket arrangements for three mushroom composting sheds: one main composting shed (60 × 40 × 20 ft), two side sheds (each 40 × 12 × 12 ft), and one insulated tunnel shed (40 × 40 × 12 ft). High-efficiency, moisture-proof IP65-rated 40W LED batten lights will be installed inside each shed to ensure uniform brightness and safe working conditions. The main shed will have 12 batten lights arranged in a grid, while each side shed will have 4 batten lights. The insulated shed will be equipped with 8 batten lights and 2 LED emergency lights For exterior visibility and security during nighttime operations, IP65-rated LED floodlights will be mounted on each shed. The main shed will have four 100W floodlights on all sides. Each side shed will have one 50W floodlight. The insulated shed will utilize shared lighting from adjacent installations if required. Industrial-grade 6A switches and 16A socket outlets will be installed at accessible heights within each shed. Each shed will have at least 2 power sockets to facilitate connection of temporary electrical equipment, tools, or aeration controls. All switchboards and sockets will be housed in weatherproof enclosures. The wiring will use ISI-marked copper cables: 3-core 2.5 mm² for lighting circuits and 3-core 4 mm² for power sockets, enclosed in heavy-duty PVC conduit. Main distribution cable will be 4-core 10 mm² armoured copper from the main panel, with proper earthing using 2.5 mm² green copper wire. The entire installation will conform to standard safety and electrical code practices suitable for industrial-grade composting environments.

The work involves the supply, installation, testing, and commissioning of a fully automated blower-based aeration system for a mushroom composting unit comprising open and insulated tunnels. The system includes two independent sets of centrifugal blowers—each set having one working and one standby unit—making a total of four blowers, each rated at 5 kW. These shaft-driven, powder-coated centrifugal blowers are designed for silent operation and provide an airflow of 10,000 CFM at a static pressure of 125 mm water column. The powder coating ensures corrosion resistance in the high-humidity composting environment, conforming to IS 13871 for powder coatings, and the shaft-driven design offers robust mechanical efficiency. One blower set will serve the open tunnel, while the second set is dedicated to the insulated tunnel. The entire system is governed by a PLC-based control panel integrated with advanced sensors in the insulated tunnel, including six temperature sensors, one humidity sensor, one oxygen sensor, and one carbon dioxide sensor. These sensors continuously monitor environmental parameters within the tunnel and send real-time data to the PLC, where an HMI screen allows the end user to input threshold values for temperature, humidity, oxygen, and CO₂. The blower operation is fully automated based on these setpoints, ensuring precise control of composting conditions. Additionally, the system includes timer-based cycling logic to maintain air circulation in the event of sensor failure or override. Installation work includes constructing suitable RCC foundations for each blower with anti-vibration mountings to ensure stable and quiet operation, adhering to IS 2974 (Part 1) for foundation design of machinery. Each blower will be connected to its respective composting tunnel via galvanized iron (GI) sheet metal ducting, fabricated as per IS 655, and fitted with butterfly dampers for airflow control. The electrical wiring will be laid using 3.5-core armored aluminum or copper cables conforming to IS 1554 (Part 1), with weatherproof termination in heavy-duty PVC cable trays complying with IS 14927. All electrical works will follow safety guidelines as per IS 732 for electrical wiring installations and IS 3043 for earthing. The control panel, built with an IP65-rated powder-coated enclosure, will house the PLC, HMI, timers, MCBs, contactors, and motor protection devices, assembled in compliance with IS/IEC 60947 for low-voltage switchgear and controlgear. All sensors will be installed at strategic locations inside the insulated tunnel and calibrated for accurate readings, using industrial-grade transmitters conforming to ISO/IEC standards applicable to environmental monitoring. Upon installation, the system will undergo comprehensive testing, including motor run tests, sensor calibration, and PLC functional testing. The control logic will be programmed as per the technical officer’s guidelines, and the user will be trained to modify the setpoints using the HMI interface. The system ensures seamless switchover between working and standby blowers, either manually or automatically, based on operational requirements or blower failure. This solution is aimed at optimizing the composting process, enhancing compost quality, and minimizing manual intervention through automated environmental control. The entire installation will be completed in accordance with relevant IS codes and safety standards, ensuring a long-lasting, efficient, and user-friendly system.

Supply and Installation of Moisture-Resistant GI Ducts with Solenoid-Operated Fresh Air Dampers The work involves the supply, fabrication, and installation of moisture-resistant GI ducts for humid air handling in both insulated and open composting tunnels. The ducts shall be fabricated from G-90 grade GI sheets with a minimum 275 GSM zinc coating as per IS 277:2021, ensuring rust resistance in high-moisture environments. Ducts shall conform to IS 655 and SMACNA standards for fabrication and installation. Each duct line shall include provision for fresh air inlet gates, equipped with solenoid-operated dampers, which will open or close based on site-specific control logic or environmental conditions. These gates must be fabricated from anti-corrosive materials and integrated into the duct network with airtight sealing. Ducts shall be internally epoxy-coated if required and supported with MS angle frames and vibration-isolated clamps. Electrical actuation wiring for solenoids and control switches will be terminated at the nearest junction box or control panel.

Placement of Perforated PVC Pipes for Aeration in Mushroom Composting Tunnels The work involves the supply, placement, and installation of perforated PVC pipes for an under-floor aeration system in three mushroom composting tunnels, each measuring 40 ft (L) × 12 ft (W) × 12 ft (H). This includes two standard tunnels and one insulated tunnel. The scope of this work is limited to the aeration piping only; associated blower systems and electrical works are excluded and being handled separately. Each tunnel will have 12 PVC pipes, each of 8-inch (200 mm) outer diameter and 40 ft (12.2 m) length, placed horizontally along the tunnel floor at 1 ft (300 mm) center-to-center spacing. Pipes shall be aligned parallel to each other for even airflow coverage.Each pipe shall have 80 perforation holes, spaced at 6-inch (150 mm) intervals, with each hole having a diameter of 1.5 cm. This results in a total of 960 holes per tunnel (12 pipes × 80 holes). The holes shall be positioned to face upward to allow vertical air discharge through the compost pile.Airflow, supplied by a separate 10,000 CFM blower system, is designed to deliver an average air velocity of 27.8 m/s per hole, ensuring uniform aeration. The pipes must be laid without deformation, with ends aligned for duct connection or capping. Pipes shall be anchored or weighted to prevent movement during compost loading.The contractor shall clean the area post-installation and hand over the system ready for integration.

The work involves the installation of two chemical earthing pits using 3-meter long, 50 mm diameter GI or copper-bonded electrodes as per IS 3043:2018. Each electrode will be installed in a vertical borehole with chemical backfill compounds like Bentonite or graphite-based earth enhancement material to maintain low soil resistance. The electrodes will be connected to the earthing network using 25×3 mm GI/copper strip and terminated inside a PVC inspection chamber. The final earth resistance of each pit shall be maintained below 1 Ohm, ensuring safe, reliable, and maintenance-free earthing for the connected electrical systems.

Overhead Sprinkler Pipe Network with Zoning and Manual Valve Control The work involves the supply, installation, and commissioning of an overhead sprinkler irrigation network to uniformly wet compost in two composting tunnels and one open shed. The system is divided into four zones for ease of control, water management, and operational flexibility. The sprinkler system covers: Two tunnels, each measuring 40 ft × 12 ft, with 5 sprinklers each (Zones 1 and 2) One open shed, measuring 60 ft × 40 ft, divided into two zones with 15 sprinklers total (Zones 3 and 4) A total of 25 brass/polymer impact sprinklers (¾") are installed at 10 ft spacing, each delivering 11 LPM at 2.5–3.0 bar pressure. The network uses approximately 60 meters of 50 mm HDPE pipe as the mainline, and 70 meters of 40 mm HDPE pipe as branch lines. Sprinkler risers are made of 25 mm UPVC or GI pipe, with a total riser length of 30 meters.Each zone is equipped with a manual 1.5" brass or GI ball valve to control water flow independently. The layout allows either all zones to run simultaneously or sequentially, depending on pump capacity and water availability. All joints shall be leak-proof, using compression fittings or solvent-welded joints as per IS standards. components like inline filters, pressure gauges, are to be added . The entire system must be tested under pressure, flushed before use, and anchored firmly to prevent movement. All materials used must comply with IS 4984 (HDPE pipes) and IS 4985 (UPVC pipes), ensuring durability and safety. Proper spacing, alignment, and sprinkler positioning are critical to achieving uniform compost wetting without water logging.

SITC of 3.5KW 3 phase Water Pump with direct shaft connected motor capable to handling 275 LPM water at full load at 3.5 bar pressure at the most remote sprinkler. The job includes cost of Wate Pump along with its Control Pannel/ Starter, necessary foot valve and NRV at the suction end and a appriopriate sized Suction pipe.

Supply and installation of a 40 Mbps wireless fiber optic internet connection with router and antenna, including all accessories, for 2 years. The service shall ensure reliable connectivity for monitoring and control systems with 99.5% uptime and technical support, compliant with DoT and BIS standards.

Printing and documentation like 3 No. A4 size Paper Rim 10 No. each Black and Blue ball point pens , 10 files Covers with In built paper clips, one paper Hole punch

Supply and Installation of 12 ft × 12 ft Insulated Double-Door Gate The work involves the supply, fabrication, and installation of a double-leaf insulated gate of size 12 ft × 12 ft for an insulated composting tunnel. The gate shall be constructed using PUF-insulated sandwich panels, minimum 40–50 mm thick, offering high thermal resistance and structural integrity. The panels shall conform to IS 12436 for thermal insulation and IS 14276 for rigid PUF construction.The frame shall be fabricated from powder-coated mild steel sections conforming to IS 2062 and painted as per IS 1477 standards for corrosion protection. The gate will be mounted on heavy-duty stainless steel or galvanized hinges, fitted with industrial locking handles and EPDM rubber gaskets for airtight sealing. A proper thermal break must be ensured between the outer frame and internal space.All necessary accessories, anchor fasteners, primers, topcoat paints, and installation hardware shall be included. The installation must ensure smooth opening, weatherproofing, and thermal sealing to preserve internal tunnel conditions.

Centering and shuttering including strutting, propping etc. and removal of form work for:

Carriage of cement by Mechanical Transport for an average distance of 10 Km (ten Kilometres) from nearest source to the site of work incl. loading, unloading and stacking complete.

Carriage of stone aggregate above 40 mm by Mechanical Transport for an average distance of 30 Km (thirty Kilometres) from nearest source to the site of work incl. loading, unloading and stacking complete.

Carriage of Sand and stone aggregate below 40 mm by Mechanical Transport for an average distance of 30 Km (thirty Kilometres) from nearest source to the site of work incl. loading, unloading and stacking complete.

Disposal of surplus earth av, distance 100 Mtr.

Carriage of Steel by Mechanical Transport for an average distance of 30 Km (thirty Kilometres) from nearest source to the site of work incl. loading, unloading and stacking complete.

Zephyrwings solution pvt ltd (BID ID -2617893)