Heiđursfélagar Steinsteypufélagsins eru:
Jónas Frímansson
Eiríkur Jónsson,
Haraldur Ásgeirsson
Hákon Ólafsson
Ólafur H. Wallevik, 2002
Ríkharđur Kristjánsson
Guđmundur Guđmundsson, 1988
Konráđ Andrésson
• American Concrete Institute
• American Society of Civil Engineers, ASCE
• British Cement Association, BCA
• Cement och Betong Institutet - CBI
• The Concrete Society
• ConTec
• The Institution of Civil Engineers, ICE
• International Association for Bridge and Structural Engineering, IABSE
• Nordic Concrete Federation
• Rilem
• SINTEF
• Steinsteypufélag Danmerkur
• Steinsteypufélag Finnlands
• Steinsteypufélag Noregs
• Steinsteypufélag Svíţjóđar
• Teknologisk Institut, Beton
• VTT Building Technology, Technical Research Centre of Finland