Table 6

Construction Materials	Material Frquency	Cycle Frequency	Specialized Training	Specialized Equipment	Employee Health Hazard	Renewable Resource Requirement	Maintenance Costs	Disposal Problems

ROADS

Gravel	3	3	1	1	1	3	3	1
Asphalt	1	1	2	2	1	2	1	2
Concrete	1	1	2	2	1	2	1	2
Special Treatments	v	v	v	v	v	v	v	v

TRAILS

Gravel	2	3	1	1	1	3	3	1
Stone Chips	1	2	1	1	1	3	3	1
Barks	3	3	1	1	1	3	3	1
Native Soil	3	3	1	1	1	3	3	1
Wooden Boardwalk	2	2	2	2	1	1	2	3
Concrete	1	1	3	2	1	2	1	2
Asphalt	1	1	3	2	1	2	1	2

BUILDING MATERIALS

Foundations
Concrete	1	1	2	3	1	2	2	3
Block	1	1	2	2	1	2	3	2
Treated Plywood	3	2	2	1	2	1	2	2

Exterior Walls
Wood	2	2	1	1	2		2	2
Plaster	1	1	2	1	1		3	1
Concrete	1	1	2	2	1		2	1
Block	1	1	2	1	1		2	2
Vinyl	3	3	2	2	1		3	1
Stone	1	1	1	2	1		3	1

Roofing
Tile	1	1	2	2	1	2	1	1
Roll Roofing	3	3	1	1	1	1	3	3
Asphalt Shingles	2	2	1	1	1	1	2	3
Sheet Metal	2	2	2	2	2	2	1	2

Interior Walls
Sheet Rock	3	3	2	1	1	3	2	2
Plaster	1	1	2	1	1	3	2	2
Tile	1	1	3	2	1	2	1	2
Treated Plywood	2	2	1	1	2	1	2	3

Flooring
Slate	1	1	2	2	1		1	1
Linoleum	1	1	1	1	1		3	3
Tile	1	1	2	2	1		1	1
Vinyl	2	3	2	1	1		3	3
Carpet	3	3	1	1	1		2	3
Wood	2	2	1	1	2		2	2

Key to Ratings:	1 = long	1 = low longevity	1 = little training replacement	1 = general required	1 = low health equipment	1 = minimizes use of nonrenwable resources	1 = low cost of nonrenewable resources	1 = low
	3 = low life expectancy	3 = high degree of training	3 = high degree of training	3 = specialized equipment	3 = high health hazard	3 = requires high degre of nonrenewable resources	3 = high costs	3 = high
	v = varies	v = varies	v = varies	v = varies	v = varies	v = varies	v = varies	v = varies