Supplement to ODNRI Bulletin No. 10 - An evaluation of structures suitable for emergency storage in tropical countries 1. Wind forces on emergency storage structures (ODNRI Bulletin No. 23)

The supplement aims to alert donors, designers, suppliers and users of emergency stores to the magnitude and importance of wind loads in tropical countries. This is effected by providing three-second gust speeds and the means to calculate wind loads and also some practical design aids

Supplement to ODNRI Bulletin No. 10 - An evaluation of structures suitable for emergency storage in tropical countries 2. Bumper crop storage (ODNRI Bulletin No. 24)

The supplement distinguishes between emergency storage for relief food and bumper crop storage: it critically examines and compares the different systems including traditional methods, cover and plinth (CAP), flexible silos, pits and bunkers. To help users choose the system appropriate to their unique needs, the supplement provides a qualitative method for system selection and indicative costs

A mathematical model, with cost implications, for predicting temperatures in seed stores (ODNRI Bulletin No. 16)

Mathematical relationships are derived between climatic and design factors in seed stores using heat balance equations modified for tropical seed storage. A computer program has been written for the Hewlett Packard 9645 to make calculation easy; this incorporates data banks of the required parameters for common store building materials and for typical tropical climates. This program has been partially verified for grain in Sri Lanka using field data. Results from program case studies highlight the relative importance of different elements of warehouse design. For seed stores, the program employs viability equations to provide least-cost combinations of warehouse cladding and seed drying regimes under varying conditions of climate and building design. In a typical 1,000-tonne seed store use of aluminium roofing and concrete block walls instead of corrugated steel cladding can save over £12,000 a year, if both drying costs and annualized building costs are taken into account

An evaluation of structures suitable for emergency storage in tropical countries (ODNRI Bulletin No. 10)

The bulletin provides technical, economic and managerial assessment of emergency storage systems. It is based on investigations conducted by ODNRI and on information provided by users from the World Food Programme and five relief agencies. Where the priority was provision of food shelters quickly and easily, with facilities for rapid relocation, users favoured a combination of tarpaulins, tents and plastic-covered metal frame structures . Where the priority was security/ease of management, traditional warehouses or frameless modular structures were superior, more permanent and had a lower annual cost after four years of use. In either case if stores could be provided locally this was generally preferable - for reasons of speed and economy - to provision of imported stores, of which there are a number of well-tested types. Part I of the bulletin provides background, research and tables showing operational comparisons, capital costs, procurement times, packed weights and annual costs for the main store types. Recommendations for research on design of stores capable of resisting tropical wind loads and on bumper crop storage are made. Part II summarizes the results in Part I and provides for users/donors/ governments: (a) a practical decision tree for choosing a store, (b) a method for calculating store capacity, and (c) a catalogue of suppliers giving product details for freight, costs and telex numbers. Suppliers of pallets are included

An evaluation of structures suitable for emergency storage in tropical countries 1; wind forces on emergency storage structures

9.15; Supplement to ODNRI-B--10Available from British Library Document Supply Centre- DSC:2674.72(ODNRI-B--23) / BLDSC - British Library Document Supply CentreSIGLEGBUnited Kingdo

A mathematical model, with cost implications, for predicting temperatures in seed stores

8.00Available from British Library Document Supply Centre- DSC:2674.72(ONDRI-B--16) / BLDSC - British Library Document Supply CentreSIGLEGBUnited Kingdo