Warehouse for Bag Type Storage of Grains

Question 1

Moving of air through stored grains at low airflow rates between 0.05 – 2.28 cubic meter per
minute per ton for purposes other than drying, to maintain or improve its quality

Answer 1

aeration

Question 2

Wooden or plastic (food grade) frames used on concrete floors for stacking bags to prevent
direct contact between the grains and the floor

Answer 2

dunnage

or “tarima”

Question 3

In this type, six blocks are formed to make standard stack of 9.14m x 6m size. Each block is
of the size 6m x 1.5m. In the block, one layer is put lengthwise and other breath-wise.

Answer 3

Block stacking

Question 4

Methods of piling where sacks
are piled side by side and one on top of the other for appropriate pest control measures

Answer 4

Chinese Method

Question 5

This system of stacking provides ventilation space between bags and allows circulation of
convective air currents that provide a medium for heat dissipation.

Answer 5

Japanese method

Question 6

In this type bags are laid in complete length-wise or breath-wise tiers in alternate layers
systematically. The first layer will have 11 bags in 9.14m direction with 11 such rows.

Answer 6

Criss-cross stocking

Question 7

Sacks made of woven polypropylene have a tendency to slide on each other,
and therefore shall not be stacked more than ______ high. Jute sacks bind together better, and
maybe stacked up to ____ above the floor.

Answer 7

3 m- woven polypropylene
6 m- jute sacks

Question 8

Recommended stack heights

Answer 8

Grain type Max.stack. Stack
height in layers height (m)
*Wheat, 18 4.57
Barley,
Corn
*Paddy 16 6
*Rice 16 5.5

Question 9

Recommended stacking density

Question 10

Recommended stacking density

Answer 10

Stacking Number of bags
Density per cubic meter

Paddy 10
Corn 12
Rice 15

Question 11

Space between piles shall be ______ wide.

Answer 11

1m

Question 12

A minimum of _____ space between the edge of the pile and the wall shall be provided.

Answer 12

1m

Question 13

Warehouse dimensions based on the number of bags

Answer 13

Number of bags Dimensions
(1 bag = 50kg)

10,000 10 m x 30 m
30,000 16 m x 48 m
50,000 20 m x 60 m
100,000 25 m x 78 m
500,000 75 m x 142 m

Question 14

Recommended thickness of CHB used for
walls of warehouse

Answer 14

150 mm

Question 15

PAES 419:2015 (Warehouse for Bagged Storage of Grains): The standard pallet size should be:

Answer 15

152 cm × 61 cm

Question 16

Based on PABES 289:2019(FMR) For sidewalks less than 1.5 m wide, how frequently must a passing section be provided to ensure accessibility?

Answer 16

Every 30 m

Question 17

Based on PABES 289:2019(FMR) What is the maximum allowable cross slope for sidewalks to accommodate persons with disabilities?

Answer 17

2%