Me you dumb jackass
It is alright for the surface of the ramp but not for the structure of the ramp.
yes
a
mega ramp
Any don't matter
Concrete has a lot of creases and bumps and the wooden ramp is smooth
Yes, i do want to build a ramp for skateboarding
concrete
This is called a half pipe.
it was invented in 1997
Ramps have been known since ancient times. The first ramps were naturally occurring, so no one invented them. It is unknown who made the first artificial ramp. The first skateboard ramp was built by Tom Stewart, a young California skateboarder, based on the 7.3 meter diameter water pipes being used for a water project in the central Arizona desert in the 1970s.
That would be pretty hard to do. You would have to have a seriously powerful rocket propelled skateboard and a space suit to do something like going to the moon on a ramp and skateboard. Please don't try it. That probably wouldn't end so well for either of us.