4.2 Building near trees

4.2.13 Method of assessment of foundation depths using tables

Foundation depths shall be determined to prevent excessive movement due to ground heave.

A detailed method of assessing foundation depths of up to 2.5m using Tables 11-19 are given in the worked Example of clause 4.2.14 of this chapter.

Tables 11-13 are for use in High volume change potential soils, and Tables 14-16 and 17-19 are for use in Medium and Low volume change potential soils respectively.

Table 11: HIGH volume change potential soil and HIGH water demand tree

Table 11: HIGH volume change potential soil and HIGH water demand tree

Table 12: HIGH volume change potential soil and MODERATE water demand tree

Table 12: HIGH volume change potential soil and MODERATE water demand tree

Table 13: HIGH volume change potential soil and LOW water demand tree

Table 13: HIGH volume change potential soil and LOW water demand tree

Table 14: MEDIUM volume change potential soil and HIGH water demand tree

Table 14: MEDIUM volume change potential soil and HIGH water demand tree

Table 15: MEDIUM volume change potential soil and MODERATE water demand tree

Table 15: MEDIUM volume change potential soil and MODERATE water demand tree

Table 16: MEDIUM volume change potential soil and LOW water demand tree

Table 16: MEDIUM volume change potential soil and LOW water demand tree

Table 17: LOW volume change potential soil and HIGH water demand tree

Table 17: LOW volume change potential soil and HIGH water demand tree

Table 18: LOW volume change potential soil and MODERATE water demand tree

Table 18: LOW volume change potential soil and MODERATE water demand tree

Table 19: LOW volume change potential soil and LOW water demand tree

Table 19: LOW volume change potential soil and LOW water demand tree

Last updated: 2nd January 2024

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