id	keyword
brj-24969	columns
brj-24969	hollow
brj-24969	bamboo
brj-24969	material
brj-24969	load
brj-24969	failure
brj-24969	ratio
brj-24969	buckling
brj-24969	hgbs
brj-24969	slenderness
brj-24969	capacity
brj-24969	article
brj-24969	et al
brj-24969	modulus
brj-24969	strength