First  of  all,  we  placed  two  pieces  of  timber  on  the  vertical,   since   they   can  be  more  stable   in  such  position.  Then,  use  nails   to  combine  the  thin   board   with   the   two   pieces   of   timber  mentioned   above.   The   last   step   can   be   a   bit  complex.   Firstly,   measure   the   width   of   the  combination.   Secondly,   use   the   data   to  make  converted   timber   by   saw   cutting   the   third  piece  of  timber.  Finally,  measure  the  length  of  the   combination   and   divide   it   into   five   parts  on   average,   pinning   the   converted   timber  on  the  combination.      

Week  4  

The   following   part   is   a   kind   of   tension   and  compression   test.   The   strength   of   material  depends   on   its   ability   to   sustain   a   load  without   excessive   deformation   or   failure.  Since   we   all   use   the   same   material,   the  strength   of   span   depends   on   its   structure.  The  interesting  is  normally  the  first  place  to  collapse   should   be   the   point   of   junction  between   different   types   of   wood,   since   the  nail  slightly  damage  its  internal  structure.  

The   spanning   capability   of   horizontal   elements  determines  the  spacing  of  their  vertical  supports.  This   fundamental  relationship  between   the  span  and  spacing  of  structural  elements  influences  the  dimensions  and  scale  of  the  spaces  defined  by  the  structural   system   of   a   building.   The   dimensions  and   proportions   of   structural   bays,   in   turn,  should   be   related   to   the   programmatic  requirements  of  the  spaces.