What is the release of lien?

1185

---

The foundations are placed below ground level, to increase?

1253

---

What are the strongest shapes in building?

1139

---

How many lbs are there in a yard?

1226

---

How did street originate in the plumbing term street ell?

1027

---

Does brick grows bigger every year?

1143

---

How do you calculate the power of a centrifugal pump?

1158

---

Why was the empire state building made of steel?

1140

---

What are some facts about concrete?

1171

---

Will water damage concrete?

1279

---

What is alternate bid?

1153

---

Sometimes the side of concrete bridges is observed to turn black in color. What is the reason for this phenomenon?

1151

---

Who built the sears tower?

1212

---

What black man invented the clothes dryer?

1093

---

What is the average density of soil?

1258

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