Prairie Material - Ready Mix, Minneapolis, MN

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updated more than 2 years ago


Concrete buildings are cost effective, durable and allow for great flexibility in design and construction. For high rise construction, continued improvement in concrete strength in the past decade has been a major factor in the development of taller buildings in the United States and throughout the world. New structural systems—including high-strength concrete—created either from concrete alone or with a composite system that includes both concrete and structural steel are partly responsible.
These systems enable skyscrapers to resist the enormous wind and earthquake loads imposed along their height and allow these structures to support the vertical loads created by gravity, the weight of the building, and its occupants. Concrete's inherent properties of heaviness and mass create lateral stiffness, or resistance to horizontal movement.
Occupants of concrete towers are less able to perceive building motion than occupants of comparable tall buildings with non-concrete structural systems.

Company description
Greater building height became possible as concrete strength increased. In the 1950s, 5000 psi (34 MPa) was considered high strength; by 1990, two high-rise buildings were constructed in Seattle using concrete with strengths of up to 19, 000 psi (131 MPa). Prairie Material now produces ultra-high-strength concrete with strengths in excess of 21, 750 psi (150 MPa).

In addition to increased height, concrete buildings have a number of other benefits:
Maximizes Space
Because the depth of a concrete frame is shallower than a steel structure, a concrete building has lower floor-to-floor heights. Structural concrete provides more floors than a steel building of the same height. For buildings taller than five stories, this reduction in floor-to-floor height translates into one additional floor of occupied space for every five floors.

Reduction in height also reduces costs. There's less material and labor cost for exterior building finishes and mechanical, electrical, and HVAC components with vertical runs

Tenant Friendly
Concrete can accommodate variations in architectural design to suit tenant or owner needs. And once in service, concrete buildings adapt to tenant modifications without the special fireproofing needs required by structural steel.

Sound- and Vibration-Proof
Concrete buildings have excellent acoustics. In standardized tests of sound absorption, transmission, and isolation, concrete receives high ratings because of its density. The high density of concrete also resists vibration and electrical interference—prime considerations for today's highly computerized and networked office environment.

Visually Appealing
Concrete buildings have a rich architectural legacy. Concrete's ability to accept any form, finish, color, or texture has long made it the most versatile of building materials.
Concrete Professionals
High Performance Concrete, Self Consolidating Concrete, Structural Lightweight Concrete, Decorative Concrete, Roller Compacted Concrete, Pavement Material, Aggregates
ready-mix designs, mobile plant installations
Redi-Pave, Redi-Fill, Diamond Drive
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