scaffolding with a truss and for round frame such as a church, 2th July, Colone( Koln),  
Mr Nicolizen , ki sang son, july, 1990, Stuttgart, Germany
 
Church, built in roman imperial age, July, 1990, Stuttgart, Germany  
prof Krag , ruhr universitat Essen, Oct 1990, Essen , GERMANY  
temporary protection for uneven excavation area ,Berlin GERMANY, 10th july 1990
kisang son, BG inspector, Berlin office, Nov 1991, Berlin, GERMANY Berlin philharmony orchestra bldg, Nov 1991, Berlin, GERMANY  
ki sang son, dept of civil engineering, OCt 1991, university of Berlin, Berlin , GERMANY  
berlin philharmany orchestra, Dec 1991, Berlin, GERMANY  
test steel beem against buckling, Nov 1991, dept of civil engineering, university of Berin, Berin, GERMANY  
Ki Sang SON, and prof  D. BAMM,   on   1st  OCT---23rd  DEC  1991, dept of  civil  engineering,  BERIN  UNIVERSITY, BERION, GERMAN

Berlin technische universitat/interviewees, Oct 1991

 correspondences in BERLIN

fabricating hand railing with form ,frei universotat BERLIN, GERMANY, Oct 1991

base reinforcement of pipe support, Berlin, germany, Oct 1991

fabricating from and support, Frei universiat Berin, Germany, Oct 1991

round saw,with movable protection, Brlin, GERMANY, oct 1991

ancient castle influenced by ROME, in POTSDAM, GERMANY, Oct 1991