Bio Engineering: Grass Seeding & Turfing

Grass Seeding & Turfing in Bio Engineering

Grass Seeding:

• Prepare the site well in advance
• Immediately before sowing, scarify the surface of the slope
• Start sowing from the top of the slope and work downwards. ( @ 25 gm/m2)          
• Cover the seeds completely with a layer of mulch
• Wide mesh jute netting (150 mm × 500 mm mesh size) should be used to hold mulch on to the surface
• if the slope is greater than 30°

 

 Turfing:

Function:  

•  Put in gentle embankment slopes to armour

Sites:   

• Gentle slope less than 30°, well-drained materials, with minimal risk of slumping Materials

Materials Required: 

• Flat shovel, khukuri to cut the turf to shape, water, wooden rammer (mungro), wooden pegs.

Working Method:

• Mark out with lines the size and shape to be cut (300 × 600 mm);
• Cut the sides of the shapes with a khukuri, to at least 50-mm depth;
• Using a broad, flat shovel to cut horizontally under the shapes and lift them out.
• Prepare site well in advance
• Scarify the surface and place turf.
• If the slope is steeper than about 25°, wooden pegs should be hammered
• Once the slope has been satisfactorily covered, compact the turf with the wooden rammer.
• Finally, water the fresh turf thoroughly.