Why gunny bags should be placed away from the walls of the godown?
Answers
The approximate location of a proposed warehouse for grain storage will have been decided already. However, the determination of its exact siting is a matter for engineers. If a large warehouse is planned, it is always prudent to involve local Civil Engineers at this stage.
Several factors need to be considered in selecting a suitable site. In the first instance the topography of the area has to be studied. It is preferable to erect the warehouse on level ground, ideally slightly raised above the surrounding area, which is well drained and not prone to flooding. Low locations must be avoided. If it is difficult to find a level area then the least undulating or sloping area should be selected, and the site should be oriented along contour lines, in order to minimise the amount of levelling and filling in to be done.
It is then important to determine the characteristics of the soil: its load-bearing capacity, resistance to compaction, and drainage characteristics. Never build on black cotton soils, because these are weak and do not have sufficient soil-bearing capacity even for small warehouses. The warehouse and the approaches to it will need to be protected from running water by an effective drainage system, and the site should be able to accommodate such a system.
For easy access and movement of stocks, the warehouse should be sited as near as possible to a main road. It is also important to ensure that the approaches to the warehouse will permit easy movement and manoeuvring of vehicles around it. This means that, in addition to the area to be occupied by the warehouse, there should be plenty of usable space around it. Also, looking to the future, there should be sufficient space for the erection of additional warehouses and utility buildings.
In tropical countries it is very important that the long axes of warehouses are oriented East-West as nearly as possible. This way, the side walls are least exposed to the sun and temperature variations inside are minimised. If the warehouse cannot be oriented EastWest, some benefit may be derived from siting it across the direction of the prevailing wind. The interior can then be effectively cooled by opening all doors and windows at appropriate times.
Finally, bearing in mind that grain in the warehouse will probably be fumigated with gas lethal to human beings (see Chapter 8) from time to time, it is important that the site chosen must be a safe distance from dwelling houses, shopping centres and other working areas.
Gunny bags should be placed away from the walls of the godown for the following reasons.
- To prevent the moisture being absorbed from the walls.
- To allow space for inspection of areas for cleanliness
- To inspect possible insect or rodent activity.
- Keep in mind that the walls are in constant contact with the outside environmental conditions and gunny bags are made of natural fibres like jute, hemp, etc.
- They are susceptible to moisture absorption and fungal contamination and any dampness can cause damage to the seeds or grains stored in them.
- Therefore, it is advised to place the gunny bags 0.5 metre away from the wall .
- In addition, the seed sacks should be stacked on wooden dunnage/matting and stacked one above the other and a maximum of 6-7 sacks can be stacked in a vertical row.
- Leave space between the stacks so that air can move freely between them.
Some related information can be found in these links.
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