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close this bookSpecial Public Works Programmes - SPWP - Anti-Erosion Ditches - Training Element and Technical Guide for SPWP Workers, Booklet No. 1 (ILO - UNDP, 84 p.)
close this folder4. Worksite organisation
close this folder4.2 Good selection of tools
View the document(introduction...)
View the document4.2.1 Surveying Instruments
View the document4.2.2 Tools used in the digging of ditches


Three types of tool are required in the construction of ditches:

- those which are used in the measurement of distance and slope. These tools enable us to determine the right location for the ditch and are known as SURVEYING INSTRUMENTS;

- those needed for the digging of the trench and backfilling of excavated materials;

- those necessary to check the quality of the work.

We will deal with each of these tools in turn, giving a detailed description of its use.