2014_studio18_Logbook

Week1  Mass  construction  tower  

We   chose   to   build   this   mass   construction  

tower  in  a  shape  of  cylinder  because  according  

to   its   base,   compared   with   a   triangle   or   a  

square   or   a   triangle   or   a   regular   or   irregular  

polygon,   the   circular   base   saves   the  materials  

to   build   the   tower.   During   building   this  

cylinder   tower,   we   also   take   another   way   to  

save   the  wood  bricks,  which   is  setting   aside   a  

certain  amount  of  space  which  is   less  than  the  

length   of   a   piece   of   wood   brick   between   two  

pieces  of  wood  bricks.    

Materials:  wood  bricks  

Efficiency:  -­‐strength:  strong  compression  

                                    weak  tension  

                    -­‐stiffness:  stiff  

                    -­‐shape:  volumetric  

                    -­‐economy:  economical  

                    -­‐material  behavior:  isotropic  

From  this  load  path,  we  can  

clearly  see  how  the  loads  

transfer  down.  Each  one  of  the  

forces  of  wood  bricks  transfer  

down  to  the  beam,  which  is  

consist  of  two  wood  bricks.  In  

terms  of  this,  all  terms  of  loads  

go  down  to  the  ground.  They  

are  supported  by  the  ground.  

When   time   is  over,   the   two  mass   construction  towers  are  what  we  done  and  what  my   friends’  group   done.   It   can   be   clearly   seen   that   we   built   much   taller   than   what   they   did.   Because   of  different  methods,   there   came   two  different   types   of   towers.   Although   our   tower   seems  much  taller   than   the   other   groups   in   the   class,   there   are   some   serious   problems   existing.   Compared  with   the   right-­‐hand  side   tower,   the   stability  of  our   tower   is  weaker   for   its   enclosure  system   is  consisting  of  double  layers  of  wood  bricks.  However,  even  though  their  enclosure  system  makes  the  tower  more  stable   than  ours,   it  cost   lots  of  materials.   In   the  consideration  of  economy,  our  tower  is  more  welcomed.  On  the  way,  to  build  up  a  tower,  it  saves  more  time  if  trying  to  build  a  tower  like  ours.  

Opening  

During   building   this  tower,  the  procedure  of  setting   up   an   opening  is   the   most   difficult  problem   though  all   the  procedures.   The   wood  bricks   around   the  opening  need  to  rely  on  the  forces，   which  are  transferred   by   the  wood   bricks   above  them.  We  need  to  build  up  the  other  sides  first,  and   then   we   can   seal  the  opening.  It  is  tough  to   create   an   opening  and   we   failed   many  times.   It   still   looks  irregular   even   though  we   were   successful   to  finish  this  task.  

Deconstruction  process  

It   is   interesting   to   notice   that   when   we   are   doing   the   deconstruction  

process,  the   tower  would  not  collapse  until  we   take  one  particular  wood  

brick.  From  the  photo,  we  can  see  the  tower  still  stands  there  even  if  my  

partner  is  taking  the  bricks  from  the  tower.  

Knowledge  Map                                                        

Glossary                                            

Beams  are  rigid  structural  members  designed  to  carry  and  transfer  

transverse  loads  across  space  to  supporting  elements.  The  

nonconcurrent  pattern  of  forces  subjects  a  beam  to  bending  and  

deflection,  which  must  be  resisted  by  internal  strength  of  the  material.    

Load  

Path  

Week2  Frame                                                  

Material:  balsa  wood  

Efficiency:  -­‐strength:  strong  

                  -­‐stiffness:  stiff  

                  -­‐shape:  volumetric  

                  -­‐economy:  economical  

                  -­‐material:  behavior:  isotropic  

                  -­‐sustainability:  sustainable  

First  of  all,  we  decide  to  build  this  frame  

by   using   the  base   like  what   is   shown   in  

the   graph.   To   make   sure   this   base   is  

stable,  we  add  four  pieces  of  short  balsa  

wood  which  connecting  each  sides  of  the  

base  to  the  main  stanchion  in  the  middle  

because  when  there  have  those  pieces  of  

short  balsa  wood,   the   triangle  will   exist,  

which  in  order  to  make  the  frame  stable,  

for   the   triangular   things   have   the   best  

stability.  

We   did   not   have   a   clear  

design   of   the   frame,   but  

when   we   were   building   the  

frame,   we   always   try   to  

make   it   with   triangles,   in  

order   to   make   the   frame  

stable.   As   a   result,   we   come  

up  an   idea   to  build  up   like  a  

diamond  shape.  

During   building   this   frame,  

we   try   our   best   to   notice  

every   detail.   Like   what   my  

partner  is  doing  in  the  photo,  

to   ensure   this   frame   has  

enough   stability,   he   adds  

more   triangles   on   this  

diamond  shaped  frame.  

Actually,  it  is  easy  to  find  how  

the   forces   transfer   to   the  

ground.   The   force   spread   out  

to   the   edges   of   the   diamond  

and   the   main   stanchion  

initially.   However,   the   forces  

are   going   to   load   the   middle  

again,   and   then   spread   out  

again,   and   finally,   they   all   go  

down  to  the  ground.  

The   frame(left-­‐hand   side)   is   built  

by   another   group   in   the   class.  We  

can   see   it   is   completely   different  

from  our  group’s.         Not  only  the  

appearance,  but  also   the  load  path  

is  quite  different  from  ours.  

Construction-­‐stressing  process  

When   Candy   cut   the  

outside  frame,  one  of  

the   edges   of   the  

frame,   it   has   a   little  

deformation,   but   we  

can   see   the   frame  

does  not  fall  down  

When   Candy   cut   all  

the   edges   of   the    

first  diamond   ,   it   has  

deformation   but   the  

frame   still   stands  

there.  

When   the   main  

stanchion   is   cut,   the  

whole   frame   falls  

down.   It   shows   that  

this   frame   relies   on  

the  stanchion.  

Knowledge  Map  

Glossary  Structural  joints:  

Braced  Frame: