Posts Tagged ‘concrete’

Sand sculpting… amazing!

August 30, 2009

So after my sand models I wasn’t really sure where to take it next. It was suggested that I look into professional sand sculpting. WOW these model makers are amazing! They create such intricate design out of sand (with a limited amount of time).

I really wanted to find out what additives they were using in the sand mixture. This is a lot harder to find then i first thought because it is banned in most professional competitions. Nowadays they just use sand and water. I heard it may be a mixture of Gelatin and salt. Others say its concrete mixed with sand. But it’s my mission to find out exactly what they use. Why? Because if I can get my hand on some I will be building massive sand sculptures and skate obstacles… And making them permanent features! I will mix in way too much hardener and sculpt myself a bench. I could leave it as- is. Or I can take that design and cast myself a mould out of concrete of plaster. Could you imagine building a piece of sand furniture that hardens, and then you pick it up and take it home.

The best sand to use is sand from a river bed because it has larger triangular grains that stick together. (River = No waves!) Beach sand is not the best because the grains are rounded and smooth. This is because the waves and tides have been crashing down causing the grains to wear down over hundreds (millions?) of years.



Believe it or not but they plant explosives in these sculptures as they build them. When the competition is over… BOOM!  And I thought kicking over a sand castle was fun.

Pound- up process. Building the frames up virtically.

Pound- up process. Building the frames up vertically. Usually done the day before a competition.

They use a method called ‘Pound-up’. It basically involves building a framework out of timber. These timber walls are built up vertically until it reaches a desired height. Each section is filled with sand and is then compacted down by whacking it, jumping on it or pouring water on it. (machinery can be used to compact the sand as well.)

This is a very interesting process that I will look into further.



August 30, 2009

Before I  got started I was in need of some inspiration. I found these images of people skating different obstacles.

The Great Petition Sculpture- Burston Reserve, Melbourne

The Great Petition Sculpture- Burston Reserve, Melbourne

Rolled steel was used to create this sculpture.

I found a video that shows the meaning behind this sculpture and the design process (including fabrication). It’s really quite interesting.

Another Problem with street skating and urban design is the Cultural Significance of the location or obstacle your skating. Skaters may or may-not know what the obstacle was designed for (unless they read the plaque). And so you get a lot of skateboarders damaging sensitive sites around the CBD. Moreover, it is also seen as disrespectful when you skate at a location that is valued highly by individuals. Some examples include Lincoln Square (Swanston st) that is now a memorial for the Bali bombing victims. Churches and any other location with religious meaning. The ‘great petition sculpture’ represents women’s rights.

So to stick a bunch of anti-skate products on one of these “sacred” obstacles would detract from the meaning of the obstacle itself. And this is something skaters unfortunately take advantage of.  I would like to design an obstacle that avoids this issue.  The last thing I want is for the skater using my obstacle to be called insensitive vandal.

Skateparsk in the states

concrete bowl

concrete bowl