Materials+Review

Good morning America! This is “How to do it?” and I am (Tom)(Jena). Today I’m going to do an interview to the five greatest experts in construction materials so they would help us to decide which material is the best choice. The first is Jaimar Castro, how are you? (.....) Well tell us about stones, sweetheart: It`s a materials minerals For the construction of monumental architecture There are six types of stone: There are two techniques for working with stone: The simplest and cheapest stonework is RUBLE; i.e., roughly broken stones of any shape bounded in mortar and the strongest and most suitable stonework for monumental architecture is ASHLAR MASONRY, which consists of regularly cut blocks (usually rectangular) Its advantages are durability, adaptability to sculptural treatment, and the fact that it can be used in modest structures in its natural state. Its disadvantages are difficult to quarry, transport, and cut, and its weakness is tension limits its use for beams, lintels, and floor supports.
 * What are they made of?**
 * What are they used for?**
 * How many types of stone are there?**
 * 1. **Granite
 * 2. **Limestone
 * 3. **Sandstone
 * 4. **Marble
 * 5. **Soapstone
 * 6. **Alabaster
 * Describe 2 stone laying techniques**
 * What are their advantages and disadvantages?**

Oh thanks for that information now the second expert is Jessire Suarez, How are you? Tell us about brick: Bricks may be made from clay, shale, soft slate, calcium silicate, concrete, or shaped from quarried stone. Clay is the most common material, with modern clay bricks formed in one of three processes - soft mud, dry press, or extruded. Bricks are used for building Some are different in formation and composition while others vary according to their use. Brick drilled, which are those that have holes in the table they occupy more than 10% of the surface of it. They are used in the execution of brick facades. Solid brick Speak cutter Facing bricks Brick refractory The meaning of masonry is to perform a wide variety of structures or buildings cherished through the technique of laying bricks in an orderly succession. - Cheap and strong in compression -They're sturdier. - They easily can be painted if you want to -Extreme weather may cause degradation of the surface due to frost damage. -Brick adds a lot of weight to the foundation. -Initial cost is very high.
 * What are they made of?**
 * What are they used for?**
 * How many types of brick are there?**
 * What is the meaning of brick laying techniques?**
 * What are their advantages and disadvantages?**
 * Advantages:**
 * Disadvantages:**

That was interesting; now Greisy Marcano and Mikel Amenabar are going to talk about Iron and Steel, Hi, how are you?

In this moment we are going to talk about Iron. What are the characteristics of iron? Or, What kind of abilities has the iron in the construction? Iron has the ability to bear loads and to be produced in an endless variety of forms, in addition to its resistance to fire and corrosion, quickly encouraged architectural adaptations, first as columns and arches and afterward in skeletal structures. Well, the iron can holds to any shape and is strong in compression. That´s why early arch bridges were made of cast iron. The iron is weaker than steel in tension and can breaks without warning. Very well, now tell me an example of iron construction
 * What are the advantages of this material?**
 * And what are the disadvantages of this material?**

greisymarcano: An Iron bridge called Shropshire in England is a good example of iron construction.

The steel is uniformly strong, elastic, and workable. Also its high resistence in all stresses (tension, compression, and bending) can be closely calculated. Steel is one of the strongest materials used in construction and is strong in compression than any other material. That’s why engineers choose steel beams and columns to support most skyscrapers. Steel must to be protected against corrosion by surface covering. Also, steel lose strength in extremely high temperatures. Excellent, so far everything is clear to me. At last, I want to you tell me an example of steel construction A good example of steel construction is the Sears Tower located in Chicago, Illinois.
 * Is time to talk about steel. What are the characteristics of steel?**
 * What are the advantages of this material?**
 * What are the disadvantages of this material?.**

And the last but not least, Lucia Greco is going to tell us about Concrete. Hello how are you? Concrete is made of a cement mixture with water and aggregates like stones and sand. Characteristics The most important characteristic of concrete is it hardness. That gives to the material the potential of supporting strengths.
 * What is it made of?**

The main advantage of concrete is it resistance to compressive strengths. It can be molded into any form before drying too. Concrete offers other possibility in building: the continuity of structures and surfaces. That gives to architecture better finishes than others materials. Concrete works well under compression but not under tension. That is why reinforced concrete was invented. It is made with a reinforcement of steel that gives to simple concrete the advantages in tension of steel. Concrete is material used for building, It was discovered on ancient times by Romans. They used concrete for making new shapes in architecture like domes. Also, nowadays is used to manufacture the building structure: columns and beam
 * Advantages**
 * Disadvantages**
 * What are it uses?**

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