The initial aportable sonara unit developed for ground truthing activities at the Rio Grande test sites in New Mexico ... These ni-cad battery packs are readily available and can be quickly recharged (15 min each) using an RC battery charger thatanbsp;...
|Title||:||Instrumentation for Measuring Scour at Bridge Piers and Abutments|
|Author||:||Peter Frederick Lagasse|
|Publisher||:||Transportation Research Board - 1997-01-01|