Page 56 - Handbook GEOTEKNIK_Final_Neat

Consideration in Shallow Foundation Design Correlation Between JKR Probe & Bearing Capacity

iv. Confirmatory Probe Test (JKR/Mackintosh Probe) shall be carried out at every
column position

v. Design values for soil bearing capacity:
• 20 blows/300mm for 50kN/m 2

• 30 blows/300mm for 75kN/m 2
• 40 blows/300mm for 100kN/m 2
• 56 blows/300mm for 150kN/m 2

v. Plate Bearing Test shall be carried out when allowable soil bearing capacity is ≥ 150
kN/m
2

vi. Screeding of the excavated pit shall be carried out immediately

Notes: Notes:
If the soil bearing capacity below the spesified foundation depth is not 1 PSF (lbs/Sq.ft) =
achieved, the underlying soil below that foundation should be removed 0.04788 KN/m²
1 TSF (Ton/Sq.ft) = 100
and replaced with the following materials: kN/m²

 30% aggregate with 50 mm in size; or
 mixture of crusher run and 70% of sand; or
 100% sand + 1% of cement; or Table 6: Correlation between JKR Probe Value and Soil Bearing Capacity
 Laterite soil (moisture content < 18%) + 3% of cement

40 PUBLIC WORKS DEPARTMENT MALAYSIA GEOTECHNICAL ENGINEERING HANDBOOK 41