DESIGN OF NON VENTED DRIFTS AND KEY WALLS IN SEASONAL RIVERS

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Presentation transcript:

DESIGN OF NON VENTED DRIFTS AND KEY WALLS IN SEASONAL RIVERS KITUI TRAINING 10TH APRIL 2017 Eng. Benson M. Masila KENYA RURAL ROADS AUTHORITY KENYA DRAWINGS

TYPICAL RURAL ROAD CROSS SECTION

CONSTRUCTION OF DRIFTS IN SANDY RIVER BED - PLAN

CROSS SECTION OF DRIFT – IN SANDY RIVER BED

LONGITUDINAL PROFILE OF DRIFT IN SANDY RIVER BED

LONGITUDINAL PROFILE OF DRIFT IN ROCKY RIVER BED

CROSS SECTION OF DRIFT – IN SANDY RIVER BED

CONSTRUCTION OF DRIFTS IN SWAMPY PLANES - PLAN

CROSS SECTION OF DRIFT – IN FLOOD PLANES

CONSTRUCTION OF KEY WALLS TYPICAL PLAN

CONSTRUCTION OF KEY WALLS TYPICAL CROSSSECTION

LONGITUDINAL PROFILE FOR KEY WALL

GABION CONSTRUCTION WORKS PLAN AND CROSS SECTION

DRIFT FAILURE MECHANISMS