Major Assignment - In-situ concrete CAD drawing

I have been trying for a few days to draw this really good detail but I have been having a really hard time. Here is the grid that I imagine and I'm trying to draw the ligatures but I have not had much luck with the cad tools thus far.


Detail that I want to draw:

Image from: ‘E Allen, J Iano, ‘Fundamentals of Building
Construction, Materials and Methods’, Fourth Edition, John Wiley
and Sons Inc., New Jersey 2004

My drawing so far:


I haven't really shown all my tries at different ways of making a wrapping ligature here. Its just getting really difficult and getting frustrated with it. I have asked a few of my friends for help as they are a bit better at CAD than me but I they cant work it out either. I have tried micro station and 3D Autocad tools. The whole point of in-situ is the re-enforcing and the form work so its no use leaving it out of my drawing.

If I don't work things out by tomorrow, I might have to resort to making a physical model. I'm just not familiar enough with CAD. I will make up my mind tomorrow.

Major Assignment - Change of plans

Ok, so I have decided that the design that I want will not work with pre cast concrete and I have tried and tried to make it work.
I am now going to use in-situ concrete to build. Here are some notes I have made on the topic:


Tonight I hope to start on a CAD drawing for the re-enforcing in the columns and the connection to the beams. We will see how this goes...

Major Assignment - CAD Drawing Update 1

Here is what I have been working on today. I made a column with an edge for the beams to sit on. I'm not really happy with the way that this will come together as it isn' t very clean. Ando's insitu designs would not have had such a messy edge piece.

Major Assignment - CAD Drawing

Here is what I have managed to draw so far in CAD.
I'm still haven't put a corbel in and I'm not sure how even the grid will look once its in.

Major Assignment - Warehouse Plan and Elevation

Here is the CAD drawing I drew up today showing how I want the warehouse to look.

(click on the image to see in close up)

I'm still not sure about how the windows are going to look in the office block. Tadao Ando would have done something similar to this:

Tadao Ando, 'Matsumoto House', Wakayama,1979-80
-------------------------------------------------


Tadao Ando, 'Onishi House', Osaka, 1979
-------------------------------------------------

In an Australian context, I don't think covering the whole wall with glass is a viable solution. Thats why in the elevation I have divided up the wall panel and put a smaller window at eye level instead. Still not sure if I will change the windows on ground floor to be different from first floor.

Plan:

So the car park will be wrapped by the wall extending from the office block. The dimensions of the warehouse have been skewed slightly from the original given so that they will play in nicely with the grid pattern.

Major Assignment - Hollow Core Research Update 4

Just putting up some of the details I found in the manuals from the 'National Precast Association Australia' www.npcaa.com.au

'Hollowcore Walling- Technical Manual', National Precast Association Australia, 1992

'Hollowcore Flooring- Technical Manual', National Precast Association Australia, 2003

Plank to plank connection:

'Hollowcore Flooring- Technical Manual', National Precast Association Australia, 2003, p.16.

----------------------------------------------------

Plank to beam details:

'Hollowcore Flooring- Technical Manual', National Precast Association Australia, 2003, p.13.

----------------------------------------------------

Bearing support details:

'Hollowcore Flooring- Technical Manual', National Precast Association Australia, 2003, p.17.
----------------------------------------------------

Insitu connection detail:

'Hollowcore Flooring- Technical Manual', National Precast Association Australia, 2003, p.19.

----------------------------------------------------

Wall panel fixing details:

'Hollowcore Walling- Technical Manual', National Precast Association Australia, 1992, p.14-15.
----------------------------------------------------

Typical panel details at roof:

'Hollowcore Walling- Technical Manual', National Precast Association Australia, 1992, p.16.

Major Assignment - Hollow Core Research Update 3

I have been reading a few books on hollow core and here is the notes I have got so far to help me with my assignment.

Hollow core:

- Pre cast, pre stressed, excellent fire resistance
- Allows for fast construction as made off site
- Planks are 1200mm wide, thickness between 150mm-400mm
- Wall panels are standard widths of 1200mm-2400mm
- Casting bed is between 120m-170m in length, planks saw cut to size
- The voids allow sound insulation, reduce dead weight, conceal wiring and ducts, eg. lighting circuits. Slabs with heated are through cores can be used as a thermal mass in passive solar application.
- Topping on floor planks is a cement based skim coat to top surface of slabs. This allows direct installation of floor coverings as well as allowing the floor to act as one composite element.
- Structural topping a minimum of 60 mm thick for up to 200mm deep planks, 80mm thick for 300mm deep planks. Topping provides a level working surface.
- Non structural topping usually self leveling mortar at 10-15 mm average thickness
- Camber- topping thickness to follow camber of the planks or not, varies with each situation.
- Construction joints- saw cut made within 18 hrs of casting topping

Book list

Verge, G.C, 'Hollow core floor technical manual', 2nd ed, National precast Concrete Association of Australia, North Sydney, 199-

'Tilt-up construction notes / Cement and Concrete Association of Australia', Cement and Concrete Association of Australia, North Sydney, N.S.W., 1997

'Guide to concrete construction / a joint publication of Cement and Concrete Association of Australia and Standards Australia', 2nd ed., Cement and Concrete Association of Australia ; Homebush, Standards Australia, 2002

Helpful websites

- National Precast Association Australia, www.npcaa.com.au

Two manuals I was able to download have been even more helpful than the above books which I found in the library. They are:

'Hollowcore Walling- Technical Manual', National Precast Association Australia, 1992

'Hollowcore Flooring- Technical Manual', National Precast Association Australia, 2003


- Concrete Institute of Australia, www.coninst.com.au/