1.   No city or government wants to build earthen structures or allow them to be built.

2.   To build these structures under water, the work place is enclosed by watertight walls.

3.   You need to jot down the main purpose, headings, ideas ... then build your structure before you begin.

4.   Therefore, building structures that can withstand the power of earthquakes is a major concern.

5.   Many new structures are built with a new type of steel joint, an I-joint, which appears to be the most durable type of joint.

6.   Structures were built of logs, the ends cut and dovetailed.

7.   And the Rich Co. was compelled to build structures by certain dates or else sacrifice development rights.

8.   Another complication is that flood-control structures have been built piecemeal over the years.

9.   A concrete and steel structure was built within the original walls.