0000920371-00-000004 DEF 14A 1 19991231 20000414 SIMPSON MANUFACTURING CO INC /CA/ 0000920371 3420 943196943 DE 1231 DEF 14A 34 001-13429 601205 4637 CHABOT DR STE 200 PLEASANTON CA 94588 5106099912 4637 CHABOT DR STE 200 PLEASANTON CA 94588 DEF 14A 1 000092037100000004-001-seq1-def-14a.txt 2000 PROXY