American Government and History Assignment Example | Topics and Well Written Essays - 1000 words

American Government and History - Assignment Example There were a series of events including tax resistance against British colonists that led to the formation of a congress that adopted the Independence Declaration. This resulted to the foundation of The United States of America. With constitution amendment, abolishment of retrogressive practices like slavery and the emergence of the Manifest Destiny Doctrine a stable government was formed. This paper seeks to assess the history of the American government. 1. The term government refers to a system through which policies of a state are enforced to control its citizens. The government includes legislators, administrators and arbitrators. These positions are acquired through political discourses. 3. Sovereignty is "an attribute of a state in the form of its complete self-sufficiency in the frames of a certain territory that is supreme in its domestic policy and independence in the foreign one" (Story 88). This enables a state to have authority over another. 4. Hegemony refers to a type of leadership where there is imperial dominance.The ruler uses the implied power to geopolitically mediocre states. Rebellion is thus eliminated without direct military action Theocracy is a means of rule that has raised a lot of debate between the religious rulers and political leaders on who has more power. It is a type of government who are led by religious persons who are divinely guided in their state activities. The source of power is from a supreme being that is God. These leaders must be members of a clergy. Some of the benefits of this type of leadership is it creates a sagacity of community that is more established. There is also an infallible word of law with strict rules, and a respectable and notable leader since authority is from God (Storey 96). However, there are disadvantages that come as a result of theocracy, and they outweigh the advantages. According to Storey (98), perversion of the theocracy by

Design a Trussed Bridge to Measure Strength to weight ration Essay

Design a Trussed Bridge to Measure Strength to weight ration - Essay Example Design a Trussed Bridge to Measure Strength to weight ration In this design competition, two models of Warren truss (Bridge A and Bridge B) are presented. The aim of the competition is to provide an analytical approach to the bridge design by subjecting the prototypes to damaging failures. In the designs of Bridge A and bridge B, â€Å"scientific principles, mathematical tools, and engineering concepts† are considered. Experimental testing gave the results as follows; Bridge A with a mass of 0.1892 Kg and 0.3m supports a mass of 25.251Kg, whereas Bridge B with a mass of 0.2003 Kg supported a mass of 5.729 Kg. 1. Introduction Bridges are solutions to complex puzzles. They help in overcoming common problems presented by rivers and lakes. Application of basic engineering principles results in the design of a model to mimic the actual bridge structures. The best bridge structure the one designed to be â€Å"most efficient, elegant, and safest† (Cronn-Mills 215). A truss is a common and basic design in bridge structures. It is a compi lation of straight members organized to transmit any load to entire structure (Zureick 51). The design used here in the Warren truss (Figure 1). Figure 1: Truss Bridge Geometry Materials Common truss bridges are from steel. However, in cases of minimal loads wooden truss bridges are used. When designing a bridge from any material, material stress is calculated. (Kappos 70). When the stress value is too high then the designer remains with only two options; increasing cross sectional area of the structure or redesign the geometry to allow even distribution of loads (Cronn-Mills 252). Either of the choice has a negative impact on the structure. Increasing cross sectional area will increase the weight of the structure to the truss (Zureick 52). (Zureick 52). This might cause more geometrical problems leading to poor performance of the bridge structure (Jurado 103). On the other hand, redesigning the geometry introduces more connections, which increases the possible failure points (Zurei ck 52). Objectives The main objective of the bridge design task is to design a final prototype bridge structure that can support heavy loads before undergoing damaging failure. Two structures are designed with the same material but in different ways. (i) Bridge A is designed with more triangle structures and a combination of both hollow cylindrical and rectangular members in the structure. (ii) Bridge B is designed with less triangular structures and larger cross section area than bridge B. It uses only the rectangular hollow members in the entire structure. Truss Loads There are three types of loads all bridges must withstand, the dead loads, live loads, and dynamic loads (Zureick 53).. (i) Dead Load The weight due to the bridge structure is the dead load. It comprises of the weight of truss â€Å"members, gusset plates, and road deck† (Kappos 71). Dead loads will not change during the life span of the bridge. This load can be computed by computing the weight of one truss me mber. (ii) Live Load This is the weight due to things moving over the bridge. Live loads are temporarily on the bridge and changes from time to time (Zureick 53). (iii) Dynamic Load Temporary load tends to perturb the bridge structure for a short time. Such load includes wind load acting against the side faces of the truss (Jurado 111). It results in the truss experiencing a drag force. 2. Methodology 2.1. Model Bridge designing Bridge A and bridge B are designed