1. Ol as tingting: Ol metal anka i save kisim gutpela koneksen long as bilong en long rot bilong putim anka i go insait long simen o ol narapela samting, na ol mekanik anka i save kisim anka bilong ol long rot bilong 'negative' na 'positive friction'.
2. Bearing Capacity: Bikos ol metal anka i stap insait tru long as bilong en, ol inap long sanap strong long ol bikpela 'tensile' na 'shear' fos, na dispela i mekim na ol i gat bikpela bearing kapasiti na strong bilong anka winim ol mechanical anka.
3. Ol wok: Bikos ol 'metal anchor' i nidim 'pre-embedding, yusim bilong ol i nidim sampela samting. Ol i ken yusim ol 'mechanical anchors' long wok konstraksen na 'structural engineering' na planti manmeri i save yusim ol.
