The document discusses a cost-benefit analysis for storing paddy in silos versus traditional stacking methods, highlighting various costs associated with each. It compares construction and operational costs of both storage methods, indicating significant savings with silos over time, particularly with zincalume steel silos due to their longer lifespan and better grain quality preservation. It also details the specifications and benefits of different steel coatings for silo construction, arguing for the superior advantages of zincalume steel over galvanized steel.

1. Cost Benefit Analysis
WHY STORE IN SILOS??
LIQUID AND
GRAIN STOARGE
ISO 9001
CERTIFIED
EXPORT IN 25
COUNTRIES
8000+
INSTALLATIONS
TOTAL PADDY STORAGE REQUIREMENT OF 8 TPH RICE PLANT
8 TPH X 22 HRS X 300 DAYS = 52800 MT

2. Description Value Unit
Nos of Bags in a Paddy Stack 1454Bags
Qty of Paddy in one Bag 50Kgs
Total Tonnage of One Stack 72.7MT
LET US BUILD A STACK

3. Description Unit Price Qty Repetitions Amount
Cost of Paddy Jute Bags Rs. 55.00 1454 3 Seasons Rs. 26,656.67
Cost of Husk Bags Rs. 12.00 112 1 Seasons Rs. 1,344.00
Cost of Wooden Pallets Rs. 500.00 32 3 Seasons Rs. 5,333.33
Cost of Jute Covers Rs. 650.00 1 2 Seasons Rs. 325.00
Cost of Tarpaulin Covers Rs. 8,500.00 1 2 Seasons Rs. 4,250.00
MATERIAL REQUIRED FOR STACK BUILDING
Cost of Material Required per Stack Rs. 37,909/-

4. Description Unit Price Qty Amount
Cost per bag for Stack Building Rs. 0.80 1454 Rs. 1,163.20
Cost per Bag for Stack Unloading Rs. 0.90 1454 Rs. 1,308.60
Cost of Stack Unloading at Intake Pit Rs. 0.90 1454 Rs. 1,308.60
Cost of Husk Bag Filling, Sewing Cost Rs. 1.50 1454 Rs. 2,181.00
Cost of Husk Bag Loading and Unloading Cost Rs. 0.40 1454 Rs. 581.60
Cost of Placement of Pallets, Husk Bags, Jute Cover Rs. 100.00 1 Rs. 100.00
Cost of Covering / Uncovering of Tarpaulin Rs. 20.00 20 Rs. 400.00
Cost of Fumigation Rs. 10.00 72.7 Rs. 727.00
LABOUR COST FOR
STACK BUILDING AND HANDLING
Cost of Labour Required per Stack Rs. 7,770/-

5. OPERATION COST – BAGGED STORAGE
Description Amount Unit
Total Cost (Material + Labour) per season Rs. 45,679.00 Rs. per Stack
Cost of storage in Bags per MT per season Rs. 628.32 Rs per MT
Operation Cost of Bagged Storage per Season Rs. 3,14,16,093.54 Rs.
Description Amount Unit
Gross Storage cost in Silos including Loading / Unloading /
Aeration / Fumigation / Power / Manpower, AMCs, Insurances etc.
Rs. 200.00 Rs per MT
Operation Cost of Silo Storage per Season Rs. 1,00,00,000.00 Rs.
Operation Cost – Silo Storage
CASE : 50,000 MT PADDY STORAGE

6. COST COMPARISON
STACKING VS SILOS

7. CAPITAL COST COMPARISON
Cost of Warehouse Construction Cost of Silo Construction
Description Values UOM Description Values UOM
Capacity of Warehouse 50000 MT Capacity of Warehouse 50000 MT
Space requirement per MT 6.50 SqFt Silo Capacity 5000 MT
Warehouse Size required 325000 SqFt Nos of Silos 10 Nos
Cost of Warehouse/Sqft 500.00 Rs/SqFt Dia of Silos 22 Mtrs
Cost of Warehouse 16,25,00,000.00 Rs. Cost of one Silo 65,00,000.00 Rs
Bags Cost 0 Not Considered Total Cost of Silo 6,50,00,000.00 Rs
Pallets Cost 0 Not Considered Material Handling System 3,30,00,000.00 Rs
Forklift Cost 0 Not Considered Civil Foundation Cost 3,25,00,000.00 Rs
Cost of Warehouse Construction 16,25,00,000.00 Rs. Cost of Silo Construction 13,05,00,000.00 Rs.
Land Requirements Land Requirements
Minm Land Requirement 30,192.50 SqMtrs Minm Land Requirement 11,862.80 SqMtrs
Approx Length of Road 720 Mtrs Approx Length of Road 440 Mtrs
Width of Road 7 Mtrs Width of Road 4 Mtrs
SqMt Area of Road 5040 SqMts SqMt Area of Road 1760 SqMts
Total SqM Area 35232.5 SqMtrs Total SqM Area 13622.8 SqMtrs
Land in Acres 8.71 Acres Land in Acres 3.37 Acres
Cost of Land per acre 20,00,000.00 Rs. Cost of Land per acre 20,00,000.00 Rs.
Total Land Cost 1,74,11,901.50 Rs. Total Land Cost 67,32,387.76 Rs.
Approach Roads Approach Roads
Road Laying Cost 750 Rs/SqMtrs Road Laying Cost 750 Rs/SqMtrs
Total Road Layout Cost 37,80,000.00 Rs. Total Road Layout Cost 13,20,000.00 Rs.
Total Warehouse + Roads + Land Cost 18,36,91,901.50 Rs. Total Silo + Roads + Land Cost 13,85,52,387.76 Rs.
Savings in Silo 4,51,39,513.74

8.  ZINCALUME STEEL SILOS
 Better Grain Quality, and
 Longer Life of Silos
WHY ONLY ROSTFREI MAKE ZINCALUME
STEEL SILOS??

9. COATED METAL COATING DESCRIPTION
Galvanised Steel 99.7% Zinc + 0.2% Aluminum Coating
Galfan
95% Zinc + 5% Aluminum Coating
Magnelis
93.5% Zinc + 3.5% Aluminum + 3% Manganese
Coating
Zincalume 43.5% Zinc + 55% Aluminum + 1.5% Silicon Coating
METALS FOR CONSTRUCTION OF GRAIN SILO
GALFAN, MAGNELIS, ZINCALUME ARE FAR BETTER MATERIALS
THAN GI AS THEY LAST MUCH LONGER THAN GI

10. STILL BUYING GI SILOS???
LOOK AT THE SERVICE LIFE OF GI SILOS
G115
Rostfrei Silo are better than G210 grade of GI and lasts 40-50 Years
GI Std. Oz/ft2 g/m2
Service
Life
G40 0.4 122 7-9 Yrs
G60 0.6 183 10-12 Yrs
G90 0.9 275 15-18 Yrs
G115 1.15 351 20-23 Yrs
G140 1.4 427 24-27 Yrs
G165 1.65 504 28-32 Yrs
G210 2.1 641 36-41 Yrs

11.  Uniform Alloy Coating : ZINCALUME Steel has Alloy coating of 55% aluminium,
43.4% zinc and 1.6% silicon which is carried out at 600 Deg C, hence more uniform
and strong.
 Scratch Resistant : ZINCALUME steel is coated with specially developed passivation
and resin coating as separate layers that improves its mark resistance qualities.
Hence Zincalume looks newer for long maintaining its lustre
 Last Lasting Lustre : Special treatment provided to Zincalume Steel reduces the
rate of oxidation and resultant discoloration (Darkening) of Zincalume steels hence
look newer for longer time.
 Service Life : ZINCALUME Silos provides up to 3 to 4 times the service life of
Galvanised steel silos and that too at no EXTRA COST. Average Life of Zincalume
Silo is approximately 40-50 years as against 18-23 years of Galvanised steel silos
 Warranty : Only ZINCALUME steel comes with up to 20 years warranty against
perforation by weathering from the date of installation in neutral environment
LONGER LIFE OF SILOS
ROSTFREI MAKE ZINCALUME SILOS

12.  Since Zincalume absorb only 4-5% heat as against GI Silos that absorb 22% to
26% heat, hence grains in Zincalume Silos are are 4 Deg Cooler than GI Silos
 Cooler Grains requires lesser aeration and lesser infestation problems thus
more savings on power cost and fumigant cost
 High solar heat absorption by grains increases average temperature inside silos
which results in yellowing or discoloration of grains.
BETTER GRAIN QUALITY
ROSTFREI MAKE ZINCALUME SILOS
 Moreover high solar heat absorption in GI Silos
makes grains more brittle and which
ultimately breaks during drying & milling resulting
in more Brokens.
 Zincalume Steel is much better steel to store Grain
with high moisture content as it is tested to
withstand salt spray test of 2000 Hours as against
240 Hours of GI Steels

13. OUR INSTALLATIONS
HOPPER BOTTOM SILOS - 175 MT X 5 NOS
SILO ROOF

14. SILOS - NARELA,
300 MT X 7 NOS.

15. PADDY SILOS - PUNJAB,
2500 MT X 3 Nos
MAIZE SILO 5000 MT –
ERODE (TN)
FLAT BOTTOM SILOS

16. KOHLAPUR
500 MT x 2
ARUNANCHAL PRADESH
200 MT X 2 MALT STORAGE
HOPPER BOTTOM SILOS

17. For any further information,
Please Contact
PK Bhardwaj
Vice President (Grain Management)
Rostfrei Steels Pvt Ltd
Plot No. 211, 2nd Floor,
Okhla Industrial Area, Phase – III,
New Delhi – 110020 (India)
Phone : +91-9810010076
www.rostfreisteels.com
http://www.linkedin.com/in/pkbhardwaj
Thank You Very Much