SiiNunit
{
trailer_def : trailer_def.gravel.bottom_dump
{
	trailer: trailer.bottom_dump
	gross_trailer_weight_limit: 23291.2
	chassis_mass: 5600
	body_mass: 0
	axles: 3
	volume: 100.1
	body_type: _bottumpgrel

	mass_ratio[]: 1
}
}
