Design: The design of BEN & GAWS dry bulk storage silos is made according to the loads  on silo bins derived from American standard ANSI- ASAE EP 433:88 REV 2006 or German standard DIN 1055 1987 , wind load calculation (standard for 180 kmph)follows German standard DIN 1055-4:2005-03,snow & ice load calculation follows German standard DIN 1055-5: 2005-07. All the silos are designed for high cyclic loading.

Capacity Range: Ben & Gaws manufactures FLAT bottom silos from 2.39 meter dimeter and 9 cubic meter volume up to 33 meter diameter and 21,000 cubic meter volume. HOPPER bottom silos start from 2.39 meter diameter and 12 cubic meter volume and go up to 14.33 meter diameter and 1700 cubic meter volume.

STEEL USED: BEN & GAWS uses UNI EN 10346: 2009 S350 GD+Z grade ultra-high tensile and high yield steel with fine molecular structure and controlled internal purity. It combines outstanding mechanical properties like fatigue resistance, toughness and formability along with abrasion resistance.

ANTI-CORROSION SURFACE TREATMENT: Silo roof panels, wall sheets, stiffening struts are made of G 600 grade galvanized steel sheet for better surface protection. For roof panels and wall sheets, marine grade Zinc Aluminium coating and Magnesium coating are also available as options which offer best available surface protection in harsh environments like saline environment in coastal regions, regions with high snow fall or rain and industrial environments with high ammonia concentration, high alkaline or acidic environments etc.


SILO ROOF: Heavy duty commercial roofs are produced for specific geographical condition like seismic zone & snow load with 31° slope to compliment the angle of the products with maximum roof load capacity 20,690 kg.

Roof top ring supports loading conveyors with capacity up to 1000 TPH along with large catwalks. ‘I’ beam rafters from cylinder to top ring along with ‘Compression Beams’ provide strong fame work for the roof.

Roofs are fitted with ‘Inspection Gate’, ‘Roof Ladder’, ‘Inside Ladder’, ‘Roof Vents’, ‘Temperature Monitoring Cable hanging brackets’, ‘High Level Indicator’ etc.

SILO ROOF SURFACE PROTECTION: Silo roofs are prone to red rust due to weather condition or condensation inside the silos. BEN & GAWS manufactures roof purlins from Zinc-Aluminium weather coated steel that ensures best available rust prevention technology in the market with 25 years expected life.
SILO WALL: BEN & GAWS uses ultra-high tensile and high yield corrugated side wall sheets with each sheet length 2.7 m and each sheet height 1.12 m. Sheet thickness varies from 6 mm at the bottom to 1.6 mm at the top according to the load experienced in different parts of the wall or cylinder. 75 mm pitch and 16 mm depth corrugation gives maximum strength and better weather protection at the joints. G 600 galvanization with superior alternatives like ‘Zinc -Aluminium’ coating or ‘Magnesium’ coating provides best available surface protection in the market against corrosion.
Industrial Heavy Duty Stiffeners: Up to 3 number of ‘W’ stiffeners per sheet provides maximum strength to the silo wall and with better load transfer to the foundation. Heavy duty stiffeners also support overhead conveyors and catwalk easily. Stiffeners are joined by vertical fish plates to guarantee even load distribution. These stiffeners are sheared and bender from black steel and finished with hot dip galvanization. Thickness of the stiffeners varies from 2.5 mm to 6 mm depending load calculation.
WIND RINGS: 50 mm diameter multiple wind rings assure better tightening of the silo wall and better protection against wind. BEN & GAWS standard design includes 180 Kmph wind speed consideration which can be upgraded up to 250 Kmph depending on geographical locations.
CATWALKS & SUPPORT TOWERS: BEN & GAWS manufactures heavy duty galvanized modular catwalks with widths 1200 mm to 2200 mm supported by heavy duty industrial goal posts and bracings. BEN & GAWS catwalks can support high capacity loading equipment along with anti-slip design to improve personal safety.

Hot dip galvanized elevator support towers are designed to support elevators with capacity up to 1000 TPH and elevator height up to 35 meter. Rest platforms at certain intervals and safety guard throughout the height are designed specially to provide adequate safety.

SILO PEAK GUARD-RAIL & PLATFORM: Silo peak roof guard-rail along with operational platform can be provided on request to carry out maintenance work safely.
SILO ROOF AXIAL FANS: Generally axial fans are provided on the roof top along with 1 HP motors to store high moisture content solids. Rood fans improves air circulation inside the silos.
BOLTING: JS 1000 grade galvanized hardware exceeds 1000 hours of salt spray test which provides high corrosion resistance and neoprene EPDM backed washer protects zinc coating of the sheet at bolted section and provides watertight joint to protect the materials stored inside the silo.
LEVEL INDICATORS: Vibration fork level switches are best suitable for level sensing of solid granules, powder and liquid. Stainless-steel turning forks sense the level of the stored media through vibration. Efficient sensing, easy installation and self-cleaning are the major advantages.  As an option, paddle or magnetic level switches along with logic based automatic level controller can also be provided if required.
TEMPERATURE MONITORING SYSTEM: Modular and digital temperature monitoring sensors along with thin temperature cables in accordance with international safety standards like ATEX IECEx easily detect hotspots inside the storage system.
SPIRAL LADDER: HOT-DIPPED Galvanized and heavy duty spiral ladders along with anti-slip steps and toe guards are provided for tall liquid storage silos with diameter and height more than 28 meter and 11 meter respectively although this can be provided with smaller silos also on client’s request and will be subjected to extra cost.

HOT-DIPPED Galvanized heavy duty vertical ladders along with anti-sleep steps and toe guards are provided as standard with all silos.

Note: We are manufacturer and supplier of Raw water storage tank, drinking water storage tank, municipal waste water storage tank, firefighting water storage tank, industrial water storage tank, residential water storage tank, treated water storage tank, de-mineralized water storage tank, rain water storage tank, storage tank for water treatment plants (ETP/STP), edible oil storage tank, molasses storage tank, chocolate syrup storage tank, dry and wet paper pulp storage tank, diesel storage tank for India, Bangladesh, Sri Lanka, Nepal, Myanmar, Indonesia, Cambodia, Vietnam, Egypt, Saudi Arabia, Iran, Oman, Jordon, Tanzania, South Africa, Namibia, Kenya, Nigeria, Zambia, Ethiopia, Argentina, Bolivia, Mexico, Peru, Brazil, Colombia.