Table 2.

Comparison of material properties relative to the 160 mm standard wooden block and termite tunnelling preferences.

treatment		material property (relative to 160 mm standard wooden block)		preference
nos.	description	frequency	mass
1	160 mm wood (direction control)	same	same	none
2	20 mm wood (preference control)	higher	lower	160
3	20+140 mm wood (discontinuity control)	same	same	none
4	aluminium (match for frequency)	same	higher	160
5	aluminium (match for mass)	flat	same	160
6	rubber (match for frequency)	flat	lower	160
7	rubber (match for mass)	lower	same	160