Anchorage bolt for building structure has mid-shank bush and tip cap

摘要

A removable metal anchorage bolt (2) is fitted in a pre- drilled hole within e.g. concrete forming part of a building structure. The bolt has a cap (3) covering its tip and a bush (4) astride the transitional zone between the smooth bolt shank (11) and extending into the upper section of the thread (14). The cap and bush keel their respective sectors clear of the semi-liquid mass (9) which hardens after insertion of the bolt.