When one considers that the flanks of Mauna Loa sit on sea floor that is about 16,400 ft (5,000 M) deep, the height of this volcano relative to neighboring land (the sea floor) is more like 30,080 ft (9,170 m)!
A tieback is a horizontal rod used to reinforce retaining walls for stability. With one end of the tieback secured to the wall, the other end is anchored into the earth with sufficient resistance. Talk to Helitech CCD for more information about Tiebacks and how they can benefit your job. Fill out the form to the right or call us at 800-246-9721.
So basically you have: ballast, ties, tie plates, rail, spikes, anchors. You can have main line ballast or yard ballast. The ties are usually treated wood or concrete. The tie plates can vary depending on what the size of the rail is and what kind of tie it is. The rail is always steel, I have never seen anything different. It can however differ in size. The spikes are just spikes, but spikes are not used on concrete ties, they have a different method of holding down the rail.