Composition - Good find for this challenge. I think the lines and regularity of the pattern work well for this not to mention the way the shadows go too. One thing with having this many lines, you wan't to keep this photo as vertical as possible. The top is definitely leaning to the left a bit. It's easy enough to check when you have a reference line very close to the edge of the frame. Generally speaking I think the composition is pretty good.
Technical - The photo is not as focused as it could be. I would've set the aperture as high as it would go. Judging by the shutter speed, you should be able to easily and still have enough light to effectively shoot this. As it is, I personally would've sped up the shutter a bit. Less exposure gives more saturation. This isn't necessarily over-exposed, but it would be a little more saturated with a quicker shutter. I'm not sure if you can sharpen this one a little more with no ill-effects or not, but you may want to try that if you haven't already. A little more saturation via Photoshop is always an option too.
Overall - I think its not a real compelling subject, but it is very fitting for this challenge. I think with a few minor changes to the colors via PS or a quicker shutter would be advantageous. Something else in the picture to give it a focal point might have been a good idea. Maybe even a person. Good luck to you in future challenges - Inspzil
Nice, but slightly tilted and a little washed out. Try upping the saturation or tweaking brightness/contrast a bit. I like the composition - the shadows add to it.