1.Higher spans can be obtained by reducing no.of column supports.
2.Concrete sections can be reduced.
3.Rebar and concrete can be economized.
4.Used for precast concrete members particularly for bridges.
Pandu R Reddy.Bijjam
M.Tech(structures)
Martin J. Gutzwiller has written: 'Use of precast, prestressed concrete for bridge decks' -- subject(s): Bridges, Floors, Precast concrete, Prestressed concrete, Testing
to offer high resistance in tansion,shear and bond
no
Concrete is cheaper. As in cheaper per kilogram, cheaper to "model". Has a relatively high compressive strength
A straightedge and compass.
They use science when they build big constructions.
When using constructions(bisecting or copying and angle)
Tracing paper, ruler.
Tracing paper, ruler.
To ensure constructions are plumb "vertical"
The ancient Greeks did not use measuring tools such as rulers or protractors in their formal geometric constructions. Instead, they relied on a compass for drawing circles and a straightedge for creating straight lines. Their constructions were based on pure geometric principles, emphasizing the use of these two simple tools to achieve precise results without any measurements.
You can use a concrete crack filler to fill concrete cracks.