12.07.2015 Views

jabatan kerja raya a practical guide for environmental protection ...

jabatan kerja raya a practical guide for environmental protection ...

jabatan kerja raya a practical guide for environmental protection ...

SHOW MORE
SHOW LESS
  • No tags were found...

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

4.9 Requirements In Relation To Waterways(a)(b)(c)The Contractor and/or JKR shall seek approval from Jabatan Pengaliran &Saliran (JPS) <strong>for</strong> any works related to natural waterways includingdiversions, modifications replacements and/or relocation of rivers,watercourses and related structures during execution of the works.The Contractor shall coordinate all operations and make adjustments to hisprogrammed resulting from JPS requirements pertaining to changes madeto the natural waterways.The Contractor shall ensure that temporary diversions of rivers and/orwaterways shall be capable of sustaining flows throughout the year asspecified by the JPS.4.10 Erosion and Sediment Control (Temporary works)4.10.1 Erosion Control(a)Natural(I).BioengineeringVetiverThe plant, Vetiver Zizanioodes (Rumput Wangi) shall benon-seeding types tillers derived from tissue culture ormicro propagation method. The plantlets to be supplied shallbe at least an aggregate of 5 plantlets with roots at least 3 cmlong.The Contractor shall plant Vetiver Zizanioodes in rows asspecified in the drawings or as directed by the S.O. Indifficult soil types, borrowed topsoil may be required torefill trenches <strong>for</strong> planting the vetiver. The Contractor shallensure and maintain the growth of the vetiver.CreepersThe Contractor shall plant creepers either through seeds orsaplings. Commonly used creepers are of the speciesCentrusemo pubscens, Ficus pumila and Parthenocissushimalayana. Ficus pumila and Parthenocissus himalayanaare suitable on concrete/gunited slopes and rock surfaces.Creepers shall be planted into a planter bed previouslyprepared with drainage layer/weep holes and topsoil.Creepers should be planted individually immediately at thetoe of wall/slopes at approximately 0.3m centre to centre.31

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!