Activity:   ON  SITE  –  Oval  Pavilion  Week  10    

We went out to the Oval Pavilion once again to see their progress and learn more about the structure and function of materials used during its construction and on the building.    

This  is  the  front  of  the  Oval  Pavilion  where  we  can  see  the  construction.    The  plastic  yeallow  caps  can  still  be  seen  in  the  strip  footings  of  the  site  since  our  last  visit.  This  is  used  to  protect  any  workers  from  tripping  into  the  sharp  metals.      

The  block  wall  uses  horizontal  and  vertical  bars  to  create  its  structure  and  reinforces  it.  

The  original  framework  of  the  seats  can  be  seen  in  this  image.    This  is  falsework,  where  temporary  structures  are  created  to  support  the  spans  during  the  constructing  process  (Encyclopedia  Britannica,  2013).  This  is  used  to  brace  it.  

Inside  these  step  and  seats  are  hollow.  The  cement  was  poured  in  stages  in  the  preparation  stage.  

                                                           

The  plywood  used  for  the  fence    

This  fence  is  made  from  timber  and  has  an  origan  finish  which  leaves  it  an  interesting  pattern  that  comes  from  the  plywood.    Cladding  is  the  process  where  one  material  covers  another,  where  cement  is  coated  over  the  plywood  (wiseGEEK,  2013).  This  decision  was  made  for  aesthetic  reasons.  

Two  layers  are  used  for  the  fascia  

The  purlin  is  a  horizontal  beam  used  for  structural  support  in  buildings.  They  are  supported  by  rafters  or  walls  of  the  building.      The  two  layers  of  timber  are  for  acoustic  purposes      

Wooden  trusses  can  be  seen  to  support  the  roof  

                                                         

Sarking  refers  to  the  layer  within  the  walls  that  insulate  or  reflects  heat  from  the  reflective  foil  laminate.  It  is  a  shiny  aluminium  foil  laminated  into  paper.  The  RFL  is  also  fire  retardant  and  provides  a  barrier  to  radiant  heat’  keeping  homes  cool  in  the  Summer  and  warm  in  Winter  (Spacefoil,  2013).      

This  is  a  handrail  clamp  and  is  used  to  clamp  the  roof  and  the  ridge  of  the  roof  sheet  together.    

-­‐  Walls  will  also  have  insulation    -­‐  this  is  part  of  a  chimney  -­‐  will  have  a  skyline  window  

Zincalune  is  used  because  it  is  good  for  heat  insulation    

This  wall  is  made  from  timber  and  was  constructed  using  timber  with  the  tongue  and  groove,  where  the  tongue  is  nailed  into  the  wall.      

                                                           

LVL  (Laminated  veneer  lumber)  (Gurvich,  2013):  

-­‐ high  strength  engineered  wood  product  

-­‐ msde  from  veneers  bonded  together  

-­‐ used  for  permanent  structural  applicants  

 It  is  cheaper  than  real  timber  and  stronger  too.  LVL  are  termite  proof  because  they  do  not  like  to  eat  the  glue  that  holds  the  timber  together.    

This  is  an  aluminium  box  extrusion.  Capping  will  go  on  the  window  section  and  the  fascia  will  be  pulled  down  for  waterproofing.        

This  piece  is  called  the  head  and  it  slides  in  the  aluminium  box  to  prevent  water  from  going  in.  

 Although  rod  bracing  is  easier,  fix  bracing  is  used  when  wanted  to  be  welded  then  rod  bracing  cannot  be  used.    If  the  ends  of  the  rods  need  to  be  cut  and  welded,  therefore  it  becomes  fixed  bracing.  Rod  bracing  is  removable  whereas  fixed  cannot  be.      C  purlins  are  often  used  for  structural  support  in  walls  and  as  floor  joists  as  well  as  roofs.  They  can  also  form  braces,  ties  or  columns.  Although  Z  purlins  allow  itself  to  overlap  with  others  at  the  joints  which  is  why  it  is  potentially  stronger  and  is  used  here  (Stratco,  2010).  

                                                           

This  is  the  tongue  and  groove  timber  piece.  They  have  a  way  of  joining  together  which  makes  it  easier.  During  the  construction,  the  tongues  are  nailed  to  the  wall.        

Any  water  that  goes  through  here  goes  to  the  stormwater  drain.    Waterproof  membranes  are  put  up  against  the  side  of  the  building  so  that  water  cannot  penetrate  through  to  the  walls.    This  is  a  retaining  wall          

       

CONTROL JOINT  

A  groove  which  is  formed,  sawed,  or  tooled  in  a  concrete  or  masonry  structure  to  regulate  the  location  and  amount  of  cracking  and  separation  resulting  from  the  dimensional  change  of  different  parts  of  the  structure,  thereby  avoiding  the  development  of  high  stresses.  

   

Concrete  control  joints  can  be  sawed  or  tooled  and  are  found  in  floor  slabs,  walls,  foundations  and  sidewalks.  As  these  structures  dry,  or  cure,  they  experience  significant  shrinkage  as  water  within  the  concrete  evaporates.  Over  time,  they  continue  to  contract  or  expand  due  to  changes  in  temperature,  humidity  and  moisture  levels.  This  constant  swelling  and  contraction  can  cause  ugly  surface  cracks  as  well  as  structural  damage  if  left  uncontrolled.  

Harris, C. 2006. Dictionary of Architecture and Construction. 4th ed. McGraw-Hill, p. 1019.  

  Wikipedia. 2013. Control Joint. [image online] Available at: http://en.wikipedia.org/wiki/File:Saw_Cut_Control_Joint_in_Concrete.jpg [Accessed: 12 Oct 2013].  

wiseGEEK. 2013. What Are Control Joints?. [online] Available at: http://www.wisegeek.com/what-are-control-joints.htm [Accessed: 12 Oct 2013].  

REFERENCES    Gurvich,  D.  2013.  LVL  timber  –  in  modern  construction  &  veneers  explained  on  WoodSolutions.  [online]  Available  at:  http://www.woodsolutions.com.au/Wood-­‐Product-­‐Categories/Laminated-­‐Veneer-­‐Lumber-­‐LVL  [Accessed:  13  Oct  2013].    Encyclopedia  Britannica.  2013.  falsework  (construction).  [online]  Available  at:  http://www.britannica.com/EBchecked/topic/201089/falsework  [Accessed:  13  Oct  2013].    Spacefoil.  2013.  SpaceFoil  -­‐  Reflective  foils  for  walls  and  roofs  -­‐  Roof  Tile  Foil  Sarking.  [online]  Available  at:  http://www.spacefoil.com.au/Roof-­‐Tile-­‐Foil-­‐Sarking/  [Accessed:  26  Sep  2013].    Stratco.  2010.  Stratco  C  and  Z  Purlins  -­‐  Stratco  C  sections,  Stratco  Z  sections,  Stratco  purlin,  Stratco  girt,  light  weight  beams.  [online]  Available  at:  http://stratco.com.au/Products/Steel_Framing/Types/C_Z_Purlins/C_Z_Purlins.asp  [Accessed:  13  Oct  2013].    wiseGEEK.  2013.  What  Is  Cladding?.  [online]  Available  at:  http://www.wisegeek.com/what-­‐is-­‐cladding.htm  [Accessed:  13  Oct  2013].