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close this bookStructures Suitable for Emergency Storage in Tropical Countries (NRI)
View the document(introduction...)
View the documentAcknowledgements
close this folderSummaries
View the documentSummary
View the documentRésumé
View the documentResumen
close this folderPart I: Survey and analysis
View the documentIntroduction
View the documentProject background
View the documentObjectives
View the documentMethod
View the documentResults
View the documentAssessment
View the documentCritical factors in system selection
View the documentDiscussion
View the documentConclusion and recommendations
close this folderPart II: Users' guide to relief foot! stores
View the documentIntroduction to users' guide
View the documentStorage operations
View the documentStorage costs
View the documentWhat size of structure to order
View the documentChoosing emergency stores
View the documentSuppliers' data
View the documentWooden pallet manufactures
View the documentResponsibilities for purchasers and users of temporary stores
close this folderAppendices
View the documentAppendix 1: Letter to relief workers
View the documentAppendix 2: Questionnaire for firms
View the documentAppendix 3: Letter to firms
View the documentAppendix 4: Main features of Botswana relief stores
View the documentAppendix 5: Pyramid-shaped cap storage specification
View the documentAppendix 6: Examples of emergency storage systems
View the documentAppendix 7: Sub-categories of emergency stores
View the documentAppendix 8: A note on steel frame warehouse design for emergency
View the documentAppendix 9: Derivation of table 4 data
View the documentAppendix 10: Derivation of annual costs
View the documentAppendix 11: Store capacity for bagged produce
View the documentReferences

What size of structure to order

The following questionnaire and worked example in Table7 is based on one transit store but could be applied to a whole emergency distribution system of port store, regional stores and district stores.

Table 7: Store size calculations

When the actual required floor area, B, has been calculated, the warehouse dimensions can be determined. For economy these should be chosen from the supplier's standard range. Thus, if a 15 m span is standard, length required is 562.5 /15 = 37.5 m. The nearest multiple of the standard bay length may then be selected, e.g. 39 m for 3 m bays.

For tarpaulin quantities it is economical to order standard sizes of sheet, e.g. 7.5 x 10 m. Using one as the ground sheet, allowing 1 m margin all round, this will support a stack of 5.5 m x 8 m x 2 m high as before.

Then stack volume

= 88 m³

Stack weight (calculated as rice)

=88 /1.5 tonnes

=59 tonnes.

Two further tarpaulins 7.5 x 10 m each will easily cover the stack allowing for 1m overlaps. Hence a total of three will be required for a 2 m high stack of 59 tonnes.