Week 12: Final Construction Order

I have researched and elaborated in detail the correct construction order of the building elements and processes of the two different construction models. I have asked a few builders in the area of the order of some elements I was unsure about. I have highlighted any issues i am unsure about in the model. This will then be given to the modelling guys to clarify and sort out layers.

Timber Model

1.     Site Clearing

2.     Excavation of the rear slope

-       Excavate flat working site

-       Excavate sloping site at a 30 degree batter (no shoring required)

-       Excavate footings for retaining wall (Strip and pad footings)

3.     Construct formwork if needed (depending on ground type, we will assume no)

4.     Concrete preparation

-       Place waterproof membrane

-       Place reinforcement supports (Chairs)

-       Place reinforcement (bars and cages made up for the strip and pad footings, all to structural engineers details.)

5.     Pour Concrete for Strip and pad footings

6.     Place minimum 100 DIA sub soil drain with geo-fabric sleeve and surround with aggregate. Connect to storm water system (AG line needs to be below the ground level of FSL if there is a slab on the low side of the retaining wall.)

7.     Build block retaining wall (which will tie in with reinforcing bars set into the strip footings

-       Place reinforcement

-       Pour concrete

8.     Place waterproof membrane onto the retaining block wall

9.     Backfill with Course granular fill

10.   Bolt Post Anchor to the pad footings by the bottom plate.

-       Drill bolt holes

-       Clean holes

-       Fill holes with epoxy (One bolt secured with epoxy can hold 15 tonne each bolt)

-       Place Rod into hole with epoxy

-       Place nut and washer, tighten and grind excess rods to top of nut

11.  Fix Timber Posts to Anchor with bolt connections

12.  Fix Post cap to timber post

13.  Fix timber bearers to timber post

14.   Fix timber floor joists to bearer

15.  Fix timber floor sheeting to floor joists

16.  Ground Wall Timber Construction (Load-bearing and non load bearing)

includes the following members:

Timber

-       Bottom plate

-       Common studs

-       Nogging

-       Top wall plate

For Window Openings

-       Bottom plate

-       Jamb stud

-       Jack stud

-       Sill trimmer

-       Lintel

-       Ledger

-       Jack stud

-       Top plate

For Door Opening

-       Stud

-       Head

-       Jambs

-       Jack stud

-       Top plate

Masonry

-       Block work Fireplace

17.  First Floor timber construction

-       Bearers

-       Floor Joists

-       Timber Flooring

18.  Timber Frame Staircase

-       Timber Tread

-       Timber stringer

19.  Steel Support Structure

-       Timber Columns??

-       Steel C-Channel Beams

20.  First Floor Wall Construction

-       Bottom plate

-       Common studs

-       Nogging

-       Top wall plate

For Window Openings

-       Bottom plate

-       Jamb stud

-       Jack stud

-       Sill trimmer

-       Lintel

-       Ledger

-       Jack stud

-       Top plate

For Door Opening

-       Stud

-       Head

-       Jambs

-       Jack stud

-       Top plate

21.  Ceiling Joists or exposed beams??

22.  Roof Timber Construction

-       Beam

-       Rafter

-       Insulation

-       Metal sheet roofing

23.  Insert Metal frame windows and doors

24.  Fix Insulation and Gyprock to Exterior walls

25.  Fix insulation and Gyprock to interior walls

26.  Place floor finishes

-       Carpet

-       Tiles in wet areas

27.  Finishes

-     Doors

-       Skirting

-       Architraves

-       Cabinetry

-       Paint

28.   Fix Steel and glass railings as necessary

29.  Fixings

-       Electrical (Plugs, switches etc.)

-       Plumbing (Taps etc.)

30.  Final coats of Paint

   

Concrete Model

31.  Site Clearing

32.  Excavation of site

-       Excavate to U/S of slab level (The cut will be the extent of the building footprint)

-       Excavate trenches to the U/S of the strip footings

-       Excavate at the TOP of the strip footing level a 30 degree batter (this will ensure no shoring is needed)

33.  Construct formwork if needed.

34.  Concrete preparation for the strip footings

-       Place waterproof membrane

-       Place reinforcement supports (Chairs)

-       Place reinforcement (bars and cages made up for the strip and pad footings, all to structural engineers details.)

35.  Pour Concrete for Strip footings

36.  Construct formwork for concrete support foundations (Continuous Concrete Pier)

37.  Concrete preparation for the concrete piers

-       Place waterproof membrane

-       Place reinforcement supports (Chairs)

-       Place reinforcement (bars and cages made up for the strip and pad footings, all to structural engineers details.)

38.  Pour concrete for concrete piers

39.  Place sub soil strip drain with geo-fabric sleeve and surround with aggregate. Connect to storm water system (AG line needs to be below NGL.)

40.  Construct formwork for reinforced concrete slab

41.  Concrete preparation for reinforced concrete slab

-       Place waterproof membrane

-       Place reinforcement supports (Chairs)

-       Place reinforcement (bars and cages made up for the strip and pad footings, all to structural engineers details.)

-       Place all plumbing and electrical fittings that are fixed through the slab

42.  Pour Concrete slab

43.  Construct formwork for cast in place concrete walls

44.  Concrete preparation for cast in place walls (up to U/S of First Floor Window)

-       Place waterproof membrane

-       Place reinforcement supports (Chairs)

-       Place reinforcement (bars and cages made up for the strip and pad footings, all to structural engineers details.)

-       Place all plumbing and electrical fittings that are fixed through the slab

45.  Pour Concrete Walls

46.  Place waterproof membrane onto the retaining concrete wall

47.  Backfill up to Natural Ground Level (Backfill layer needs to be compressed for every 200mm of soil)

48.  Construct formwork for First Floors Cast-in-place concrete walls

49.  Concrete preparation for cast in place walls (up to roof level)

-       Place waterproof membrane

-       Place reinforcement supports (Chairs)

-       Place reinforcement (bars and cages made up for the strip and pad footings, all to structural engineers details.)

-       Place all plumbing and electrical fittings that are fixed through the slab

50.   Erect Steel Support Structure

-       Timber Columns??

-       Steel C-Channel Beams

51.  Erect and secure chimney

52.   

53.  Pour Concrete Walls

54.  Roof Timber Construction

-       Beam

-       Rafter

-       Insulation

-       Metal sheet roofing

55.   Insert Metal frame windows and doors

- Waterproof around windows

56.  Construct Ground Floor Timber walls

- Insulation

- Gyprock

- Place All plumbing & electrical fitting through walls

57.  Construct First Floor Timber Floor

58.  Timber Frame Staircase

-       Timber Tread

-       Timber stringer

59.  First Floor Wall Construction

60.  Ceiling Joists or exposed beams??

61.  Place floor finishes

-       Carpet

-       Tiles in wet areas

62.  Finishes

-     Doors

-       Skirting

-       Architraves

-       Cabinetry

-       Paint

63.   Fix Steel and glass railings as necessary

64.  Fixings

-       Electrical (Plugs, switches etc.)

-       Plumbing (Taps etc.)

65.  Final coats of Paint

Progress

To do:

1. Research formwork for concrete model
2. Start modelling formwork backup

For the concrete model I was asked to research and model the formwork as a backup if the complex formwork did not export to Sketchup properly. As I have worked on site before I am familiar with formwork for slabs and beams but I have not witnessed a complete two storey building being Cast in place with concrete. I know one issue with formwork on large structures is that the concrete needs to be vibrated so all air is pushed out and concrete reaches all areas of the formed structure. This 2 storey building will need to be constructed in stages.

- Formwork design must comply with AS 3610 Formwork for concrete

RESEARCH

image01: meeting with concreter to discuss how you would go about forming the 2 storey house. The formwork consists of plywood sheeting fixed with horizontal and vertical timbers (4x3) as well as bracing on both sides of the structure.

image02: this is my initial drawing trying to clarify formwork infomation. I have drawn the plywood horizontally but needs to be vertical. Rod holes that are a feature on exposed concrete walls are only used for supporting formwork rods to strengthen formwork, nothing to do with structural elements of the concrete. (see image03-06)

1. Plywood

2. Bottom sill plate (4x3 100x50)

3.Verticals 

4. Bearers

image03: I took this shot at UNSW, at the new housing. They had nice finishes on the concrete and there was minimal air bubbles in the concrete

image04: The rod holes have been finished with cement for a clean finish as this wall is on clear display.

image05: This is in a carpark in Bondi Junction, the works are not as clean as the UNSW housing works. The plastic is still left in the holes but this is a carpark and details/ finishes do not have to be exact.

image06: This image was to show rough rod spacings.

image07: a standard plywood sheet is 1200x 1800/2400.  The bottom bearer needs to span along the entire wall (continuous). If a bearer stops at the plywood end there needs to be a double bearer fixed so there is stregth in the overlap. The bottom bearer is either a 4x3 or 4x2, all timber is fixed by concrete nails through a ramset gun. The following horizontal timbers are set at 300,400,600,600 etc. The vertical timbers are spread roughly at 4 by 1200, they are always place on ends.

image08: all plumbing, electrical, openings, windows need to be planned and complete before both sides of the walls is erected.

image09: I was very unsure how to form around a window but the concreters explained that the plywood will go completely past the window and on the inside will be a structure of plywood and timbers to ensure no concrete goes into the opening. The opening is strengthen with 100x50 timbers.

image10: i was also unsure how the formwork gets constructed near the skillion roof, whether it is staggered or flush at a angle. There is a major issue pouring concrete around the windows (highlighted) the concrete needs to be extensively vibrated to ensure all air bubbles are out. The house will need to be poured in two stages.

BIM MODELLING

image11: I have modelled one board with a bottom bearer and vertical timbers.

image12: The horizontal timbers are placed at the estimated spacings 300,400,600.

image13: I modelled the reinforcing mesh in which does not go through the window openings. I have also modelled the window plywood structure without the timber bracings.

image14: One side of formwork is erected, then the reinforcing then the other side of formwork is fixed and supported.

image15: The levels in which i have modelled the plywood up to. The first pour of concrete will be the ground floor. This will have to cure up to 7 days.

image16: Both sides erected around the reinforcing.

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Week 11: Remuneration Presentation

Week 10: Conflict Presentation

6th May 2013 - Feedback and changes

- Explain the work on the blog clearer (hard to understand some of the calculations, text...)
- change the references to be clearer ( under the image not as endnotes)
-add all work onto blog ( not just on Dropbox and wiki)

http://bimandbeam.typepad.com/bim_beam/toms_corner/

http://www.tractorbynet.com/forums/build-yourself/152193-gantry-barn.html

http://studio-tm.com/constructionblog/?cat=232

http://studio-tm.com/constructionblog/?cat=112

Week 09: Individual Major Milestone

BIM to CryEngine3

- The start of this course I always wanted to be involved with the BIM to CryEngine3 group. As I have always been interested in construction and architecture as well as the tools to design and document using Building Information Modelling (BIM) programs. From the beginning of this assignment my role included Construction, modelling whilst following all standards and codes.

 I initially met with two builders in the Eastern Suburbs of Sydney to clarify construction methods and stages and to receive feedback on the design and construction of the Revit Sample Model. I then started to adjust the sample model to comply with Aus standards as well as following feedback from the builders. 

As the time it took to research construction stages, materials, sizes, spans etc  that all comply to the BCA and AUS standards the modelling was going to take to long to keep up with our planning schedule. From week three I had researched two construction types including Brick Veneer and Timber Frame. 

But with feedback given from Russell, he advised us to work from the Revit Sample model and to create another timber frame model to show lightweight construction compared to heavyweight construction. 

As this idea could show builders/ clients numerous different issues including price, carbon footprint etc. There we reassigned roles throughout the group and Matt and Dan were to model using sketchup and 3DS max and my role included working with them for construction types, sizes, spans and design. 

For my contribution to the group, I have been researching construction members, materials and stages as well as checking in with the local builders to get feedback from the works. 

My major milestone for this assignment includes gaining knowledge about and within the construction industry, learning on-site information as well as being able to interpret and gain knowledge using the Building Code and the Australian Standards. 

Also using this project as a 'real life project' to plan using a 'real' site which has factors to be considered including a local council, Waverley Council and their planning instruments including the Local Environment Plan and Development Control Plans. Which I have also learnt to analyse and interpret appropriate information needed to plan and design a building.

Tasks on WIKI

The following images show our planning schedule for the project displayed on wiki and the checklist for jobs to be completed.