The number of spikes per mile would vary with the spacing of the cross ties, the class of track, and the construction and engineering policies of the rail road involved.
Railroad cross ties made out of wood would float. Concrete railroad ties would not float.
Many nurseries and landscaping companies carry them.
Where do I get free Railroad ties If you live in mesa az. call 480 516 5285
Railroad ties, popularly known as Sleepers.
Railroad ties.
One.
The gravel under and around the ties is called ballast.
2 ft
Railroad ties. The material cost is cheaper. Labor is less skilled and cheaper. Ties will not require a foundation or drainage engineering. Make sure to insert a "deadman" every now and then if the wall is over 4 feet..
John Henry
Telephone poles and railroad ties.