On this construction project, pile foundation pipe-ramming with ***steel section insertion masts*** (HEB-masts and HEM-masts) was used

sources:

[PDF] TK_Bautechnik im Überblick (e) RZ: PDF/Adobe Acrobat - HTML
Bautechnik supplies pipe-ramming equipment, are lower pollution ...... With standard clamp ** Version for mast with guide width up to 450 mm. Drill drives ..... without damaging the pile, i.e. no deformation of the steel sections. .... Insertion end ..... with hook-type angle for HEB 300 steel waler for Gi-SV-l ...
www.tkgftbautechnik.com/english/_pdf/.../bautechnik_overvie...

HACK Layer; Piocher Construction of R.C. and P.C.; Masonry; Work 1 ...by H STONE
HALF ROUND (STEEL). Demi-rond. Metallurgy. A standard section whose cross section is a part ..... Foundation. The top part of a pile. HEAD BAY. Arrière-bief. Construction ..... base of the mast, by the return pulley of the pull ..... H.E.A., H.E.B.,and H.E.M.. HUCKBOLT. Rivelon. Metal Construction ...
www.springerlink.com/index/xxr1384226091222.pdf -