12.07.2015 Views

Buildings B

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4.1 Dealing WithBuilding Defects& Nuisance4. 1.4 Slopes and Retaining Walls (continues)FeaturesTypical Maintenance Works Required(c) 'Rigid 1 Surface Cover • Remove undesirable vegetation growth.(e.g. chunam andshotcrete) • Repair cracks or spoiling.• Regrade and repair eroded areas.Replace surface cover which has separated fromunderlying soil.(d)Vegetated SurfaceCover• Regrade eroded areas with compacted soilfollowed by re-planting.• Replant vegetation in areas where the vegetatedsurfacing has died.(e)Rock Slopes andBouldersSeal up open joints or provide local surfacingto prevent ingress of water.Remove loose rock debris.Remove undesirable vegetation growth.(f)Structural Facings• Re-point deteriorated mortar joints on masonryface.• Repair cracking or spoiling of concrete surfaceand replace missing or deteriorated joint fillersand sealants.Note :Safe and easy access should be designed and maintained for carryingout the maintenance works.SELECTING THE APPROPRIATE SOLUTIONS

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