Concrete outperforms wood as a construction material, and won't burden building owners with constant repair and maintenance costs. Versatile, long-lasting and durable, concrete is a cost-effective, sustainable choice for both residential and commercial buildings. When it's built with concrete, it's built to last. Concrete is a building material that gains strength over time. Concrete's 100-year service life conserves resources by reducing the need for reconstruction. Concrete is durable - it resists weathering, erosion and natural disasters, needs few repairs and little maintenance, adding up to a solid investment.
Frontier refers to a contrasting region at the edge of a European-American line of settlement. American historians cover multiple frontiers but the folklore is focused primarily on the 19th century west of the Mississippi River.
Border vs Frontier vs Boundary. border the line that separates two countries or areas; the land near this line: a national park on the border between Kenya and Tanzania boundary a line that marks the edges of an area of land and separates it from other areas: The fence marked the boundary between my property and hers.he point where you cross from one country to another is usually called the border. In British English it can also be called the frontier, but this is often in a context of wildness, danger and uncertainty: The rebels control the frontier and the surrounding area.