An arch is a vertical curved structure that spans an elevated space and may or may not support the weight above it, or in case of a horizontal arch like an arch dam, the hydrostatic pressure against it.
The many forms of arch are classified into three categories: circular, pointed, and parabolic. Arches can also be configured to produce vaults and arcades.
<h3>Rounded/circular</h3>
Rounded/circular arches were commonly used for ancient arches that were constructed of heavy masonry. Ancient Roman builders relied heavily on the rounded arch to span great lengths.
<h3>The parabolic</h3>
The parabolic arch employs the principle that when weight is uniformly applied to an arch, the internal compression resulting from that weight will follow a parabolic profile. Of all forms of arch, the parabolic arch produces the most thrust at the base yet can span the greatest distances.
Therefore, the parabolic arch is more structurally sound.
learn more about arches from here: brainly.com/question/3836440
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Answer:
Explanation:
This question refers to chapter 3 of <em>To Kill a Mockingbird.</em>
Scout was upset with Walter Cunningham for getting her in trouble with the teacher, so she rubbed his nose in the dirt. Jem intervened and invited Walter to lunch at the Finch house.
On the way there Scout noticed "Jem made pleasant conversation with him" and they talked about the Radleys, specifically Boo.
Jem said "I went all the way up to the house once" and Walter noted he "Almost died first year [he] come to school and eat them pecans".
Jem and Walter talked about the <u>Radleys</u>.
