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Site Investigation Works

Location : S21Chainage : CH 23+800 (From Ranau)Area of Failure : 150 sq. m

Brief Description of Road Failure

Pavement : Cracked & DepressedRoad Side Drain : OKCulvert / Sump : NoneEmbankment : Settled (LHS)Slope : NoneCauses of Failure : There is continuous flow of water from earth road side drain on the right

hand side of the road. Other possible cause of failure is embankmentmovement.

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Site Investigation Works

Location : S22Chainage : CH 24+050 (From Ranau)Area of Failure : 1930 sq. m

Brief Description of Road Failure

Pavement : Edge Cracked & Collapsed (One lane available RHS)Road Side Drain : OK (RHS)Culvert / Sump : Hidden in the BushesEmbankment : Collapsed (LHS)Slope : Collapsed (RHS)Causes of Failure : There is continuous flow of water from uphill on the right hand side of

the road to the embankment via a culvert across the road. Water fromoutlet of culvert discharged directly to the embankment surface, whichmight trigger landslip. Other possible cause of failure is embankmentmovement.

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Site Investigation Works

Location : S23Chainage : CH 24+300 (From Ranau)Area of Failure : 159 sq. m

Brief Description of Road Failure

Pavement : Alligator Cracked, Depressed & PotholesRoad Side Drain : OKCulvert / Sump : Hidden in the BushesEmbankment : OKSlope : OKCauses of Failure : Pavement improperly drained penetrated the surface and road

frequently used by heavy trucks.

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Site Investigation Works

Location : S24Chainage : CH 24+660 (From Ranau)Area of Failure : 184 sq. m

Brief Description of Road Failure

Pavement : Cracked & SettledRoad Side Drain : Settled (LHS)Culvert / Sump : OKEmbankment : SettledSlope : OKCauses of Failure : There is continuous flow of water from uphill on the right hand side of

the road to the road side drain then to the embankment via a culvertacross the road. Other possible cause of failure is embankmentmovement.

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Site Investigation Works

Location : S25Chainage : CH 24+900 (From Ranau)Area of Failure : 628 sq. m

Brief Description of Road Failure

Pavement : Cracked & SettledRoad Side Drain : OKCulvert / Sump : NoneEmbankment : SettledSlope : OKCauses of Failure : Pavement improperly drained penetrated the surface and road

frequently used by heavy trucks. Other possible cause of failure ishigh embankment movement.

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Site Investigation Works

Location : S26 (New)Chainage : CH 25+050 (From Ranau)Area of Failure : 1450 sq. m

Brief Description of Road Failure

Pavement : OKRoad Side Drain : Collapsed (LHS)Culvert / Sump : NoneEmbankment : Collapsed (LHS)Slope : OKCauses of Failure : Loose and soft soil in high embankment slope. No water encountered.

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Site Investigation Works

Location : S27Chainage : CH 25+200 (From Ranau)Area of Failure : 3000 sq. m

Brief Description of Road Failure

Pavement : Cracked, Potholes & SettledRoad Side Drain : Settled & CollapsedCulvert / Sump : OKEmbankment : Subsidence & CollapsedSlope : OKCauses of Failure : There is continuous flow of water from uphill on the right hand side of

the road to the embankment via a culvert across the road and ariver on the left hand side. Other possible cause of failure isembankment movement.

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Site Investigation Works

Location : S28Chainage : CH 26+689 (From Ranau)Area of Failure : 430 sq. m

Brief Description of Road Failure

Pavement : Alligator Cracked & PotholesRoad Side Drain : OKCulvert / Sump : NoneEmbankment : NoneSlope : OKCauses of Failure : Pavement improperly drained penetrated the surface and road

frequently used by heavy trucks.

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Site Investigation Works

Location : S29 (New)Chainage : CH 27+200 (From Ranau)Area of Failure : 5000 sq. m

Brief Description of Road Failure

Pavement : Depressed & SettledRoad Side Drain : OKCulvert / Sump : OKEmbankment : OKSlope : Landslide, Mudflow & EarthflowCauses of Failure : There is continuous flow of water from uphill on the left hand side of

the road and a river on the right hand side. Other possible causes offailure are movement of unconsolidated material and coherent block ofmaterial.

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Site Investigation Works

Location : S30Chainage : CH 27+450 (From Ranau)Area of Failure : 4800 sq. m

Brief Description of Road Failure

Pavement : OKRoad Side Drain : OKCulvert / Sump : NoneEmbankment : Collapsed (RHS)Slope : OKCauses of Failure : River on the right hand side of high and steep embankment slope. Other

possible cause of failure is embankment movement.

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Site Investigation Works

Location : S31 (New)Chainage : CH 28+000 (From Ranau)Area of Failure : 5120 sq. m

Brief Description of Road Failure

Pavement : Edge Cracked & PotholesRoad Side Drain : OKCulvert / Sump : OKEmbankment : CollapsedSlope : OKCauses of Failure : There is continuous flow of water from uphill on the left hand side of

the road to the embankment via a culvert across the road and ariver on the right hand side. Other possible cause of failure isembankment movement.

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Site Investigation Works

Location : S32Chainage : CH 28+275 (From Ranau)Area of Failure : 1395 sq. m

Brief Description of Road Failure

Pavement : Edge Cracked & PotholesRoad Side Drain : OKCulvert / Sump : OKEmbankment : CollapsedSlope : OKCauses of Failure : There is continuous flow of water from uphill on the left hand side of

the road to the embankment via a culvert across the road and ariver on the right hand side. Other possible cause of failure isembankment movement.

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Site Investigation Works

Location : S34Chainage : CH 29+220 (From Ranau)Area of Failure : 2102 sq. m

Brief Description of Road Failure

Pavement : Alligator Cracked & PotholesRoad Side Drain : OKCulvert / Sump : Collapsed together with Gabions (RHS)Embankment : Collapsed (RHS)Slope : OKCauses of Failure : There is continuous flow of water from uphill on the left hand side of

the road to the embankment via a culvert across the road and onsurface of the road. Other possible cause of failure isembankment movement.

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Site Investigation Works

Location : S35Chainage : CH 29+330 (From Ranau)Area of Failure : 1350 sq. m

Brief Description of Road Failure

Pavement : OKRoad Side Drain : OKCulvert / Sump : NoneEmbankment : Collapsed (RHS)Slope : OKCauses of Failure : There is continuous flow of water from uphill on the left hand side of

the road. Other possible cause of failure is embankmentmovement.

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Site Investigation Works

Location : S36Chainage : CH 29+460 (From Ranau)Area of Failure : 2130 sq. m

Brief Description of Road Failure

Pavement : Cracked & SettledRoad Side Drain : OKCulvert / Sump : NoneEmbankment : Collapsed (RHS)Slope : OKCauses of Failure : The main cause of failure is embankment movement.

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Site Investigation Works

Location : S37 (New)Chainage : CH 29+750 (From Ranau)Area of Failure : 1530 sq. m

Brief Description of Road Failure

Pavement : OKRoad Side Drain : OKCulvert / Sump : NoneEmbankment : Collapsed (RHS)Slope : OKCauses of Failure : There is continuous flow of water from uphill on the left hand side of

the road. Other possible cause of failure is embankmentmovement.

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