FEL4 Soil Moisture Suction Sand Table Didactic Education Equipment for School Lab Hydrodynamics Experiment Apparatus
FEL4 Soil Moisture Suction Sand Table Didactic Education Equipment for School Lab Hydrodynamics Experiment Apparatus
- Description
- Inquiry
Description
FEL4 Soil Moisture Suction Sand Table Didactic Education Equipment for School Lab Hydrodynamics Experiment Apparatus
DESCRIPTION
The equipment consists of a freestanding circular tank fflled with saturated sand (not supplied).
Equilibrated soil samples placed on the sand are then subjected to a known variable suction range of 0-800mm of water.
The suction is applied by means of a buried porous pipe and an associated sliding control chamber. In order to maintain the suction an uninterrupted low volume water supply is required.
A lightweight cover is provided to prevent evaporative water loss during experiments and the table is large enough to permit the simultaneous evaluation of several samples.
Experimental content
Understand the principles of water retentivity in terms of soil suction
Demonstrate the relationship between soil texture and soil water characteristics
Understand the relationship between water retentivity and soil
Demonstrate the influence of soil structure on the soil water characteristics of a soil
Derive soil moisture characteristic curves for a variety of soil
Relationship between applied suction and suction attained in a sand table