ENG1100 Introduction to engineering design
Questions:
1.Field notes and traverse drawing may be an outdated form of keeping and presenting information on the position of features on a site. Modern electronic equipment and computer based processing will inevitably supersede the traditional technique, but any technique does require the understanding of position and relative association which is the basis of the modern alternatives. In completing the following task, you gain some knowledge of the concepts of the traverse and gain experience of using CAD software ina different way.
The following field notes(3sheets) ofan investigation survey for a proposed servicestation sitehave been compiledbya surveyor.
Using CAD software, producea drawingofthetraverseshowing all theinformationonthesite.
2.Some of the Remote Access Laboratory equipment in the Hydraulics Lab at USQ were designed and built in-house. An experiment to demonstrate and measure the force resulting from a jet of water impacting surfaces is depicted in the schematic of Figure . Use this schematic in conjunction with the following operating requirements,
•240VACsupplies a PC for the Human-Machine-Interface (HMI), a thermostat-switched 240VACcooling fan,
a 240VACPLC-controlled pump,
a 240VACto 24VDCsupply and
a 240VACto 12VDCsupply
24VDCsupplies the PLC, Load CellTransmittersand Ball Valve V-1
12VDCsupplies ancillary lighting and PLC E/stop
The experiment is commencedby starting Centrifugal Pump E1 while Electronically Actuated Ball Valve V-1 is closed. Water Pressure Switch S-1 is used to check thatE-2is producing pressure.Together withFloat Switch S-5, this confirms that E-2 can be safely operated
.•The Flat Impact Test or the Cup Impact Test are selected by operating either Angle Seat Valves, V-2 or V-3using a signal from the HMI.
•ButterflyValve V-4 is openedand the output from Load Cell S-4 is monitored until a steady load is measured.A desired anticipated flow rate is set as an input to V-1, sent from the HMI (e.g. 30% of full deflection).
•Once steady conditions are measured at S-4, V-4 is closed until an additional prescribed mass of water accumulates in the Mass Measurement Tank. At this point, V-4 is opened and the length of time that it took to accumulate the mass is recorded by the PLC.This allowsa precise calculation of the mass flow rateof the jet of waterimpacting the surface
•While the Mass Measurement Tank is filling with the set and measured flow, Load Cell S-2 or S-3 measures the force applied to the surface the jet of water impacts. This data is recorded for subsequent analysis.
•Additional data is collected for various setting of V-1. Once the desired data is collected,V-1 is closed and E-2 is stopped.
•The remote HMI Control uses one PLC using fourinputs to produce the data used to calculatethe experiment’s results.
•For safety purposes an emergency stop pushbutton isolates ACpower via a safety relay (except control power to the PLC) when pressed.
Using CAD software, produce two drawings,
The 240 VACPower Distribution diagram
24VDCPower Distribution diagram.
3.PreparethereinforcementdrawingsfortheR.C.RetainingWall.
