Pile Design and Construction Practice, Fifth edition

From the above table the pile head deflection is satisfactory and the moment of resistance of the pile is not exceeded. Because ...

Vertical component on each pile in Row A 291.0151.6 442.6 kN Vertical component on each pile in Row B 382.0 kN Vertical compone ...

and the tower is subject to a maximum horizontal wind force of 1 500 kN with a centre of pressure 35 m above ground level. The b ...

The resultant of the vertical and horizontal forces has an eccentricity of 150035/30 000 1.75 m at ground level. From equation ...

under-reamed piles and adopting a safety factor of 2 on combined end bearing and shaft friction is given by Therefore straight-s ...

The Brinch Hansen bearing capacity factors for  0 are obtained in the same way as shown above, giving Nc 5.2, sc 1.05, dc 1.3 ...

the soft clay),  1 0.75 and  0 0.92. Therefore immediate settlement From Figure 5.13 the average vertical stress at the cent ...

Modulus of elasticity of pile 26  103 MN/m^2 Take a rheological factor of 0.8, then from equation 6.43a: km 67 MN/m^2 Over ela ...

Corresponding lateral load at assumed ground surface = 1.012 MN Slope at assumed ground surface Total deflection at real ground ...

7.1 General design requirements Piles must be designed to withstand stresses caused during their installation, and subsequently ...

in general, be covered in this chapter, but a particular point to be noted is that whereas BS8004 allows an increase in working ...

characteristic strength of 40 N/mm^2 has been used with a characteristic strength for the reinforcement of 250 N/mm^2 , and 40 m ...

the ultimatedead load corresponding to the selected pick-up point is then read off from the appropriate curve. Next the ultimate ...

7.3 Designing piles to resist driving stresses It is necessary to check the adequacy of the designed strength of a pile to resis ...

blows per unit penetration distance to develop this resistance, using a hammer of given rated energy or weight and height of dro ...

(3) Weight per unit length of pile (4) Weight and fall of hammer (or rated energy per hammer blow) (5) Efficiency of hammer (6) ...

instrument location downwards. Values of soil resistance, quake, and damping are assigned and the measured time varying velocity ...

A heavier hammer can be used to achieve the necessary penetration but this may involve a risk of overstressing the pile. 7.4 The ...

Effective lengths for reinforced concrete piles when regarded as columns are defined by EC2 (Clause 5.8.3.2): Restrained at both ...

should not arise if the piles are driven a short distance below rockhead to achieve a degree of fixity. The appropriate codes of ...