Site investigation for proposed Service Station

Question 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Field notes and traverse drawing may be an outdated form of keeping and presenting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 in
a different way.
The following field notes (3 sheets) of an investigation survey for a proposed service
station site have been compiled by a surveyor.
 Using CAD software, produce a drawing of the traverse showing all the information on
the site.
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Sheet 1 of 3: Site investigation for proposed Service Station
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Sheet 2 of 3: Site investigation for proposed Service Station
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Sheet 3 of 3: Site investigation for proposed Service Station
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Question 2 (95 marks)
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 1. Use this
schematic in conjunction with the following operating requirements,
• 240VAC supplies a PC for the Human-Machine-Interface (HMI), a thermostatswitched 240VAC cooling fan, a 240VAC PLC-controlled pump, a 240VAC to 24VDC
supply and a 240VAC to 12VDC supply.
 24VDC supplies the PLC, Load Cell Transmitters and Ball Valve V-1
 12VDC supplies ancillary lighting and PLC E/stop
 The experiment is commenced by starting Centrifugal Pump E1 while Electronically
Actuated Ball Valve V-1 is closed. Water Pressure Switch S-1 is used to check that E2 is producing pressure. Together with Float 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-3 using a signal from the HMI.
• Butterfly Valve V-4 is opened and 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
allows a precise calculation of the mass flow rate of the jet of water impacting 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.
•
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Figure 1: Rotameter Calibration Schematic. USQ Hydraulics lab.
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Question 3 (95 marks)
Prepare the reinforcement drawings for the R.C. Retaining Wall shown in Figure 2.
Length of wall 5500mm
Concrete cover 40mm
Concrete strength 20MPa
Figure 2: Reinforced Concrete retaining Wall
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Question 4 (65 marks)
One corner of a steel framed sugar mill building is shown below in Figure 3. Prepare detailed
fabrication drawing for member B16.
Figure 3: General views of steel construction detail of Sugar Mill Building
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Question 5 (145 marks)
Draw general assembly views of the belt tensioner, component details of which are given in
Figure 3. You will need to determine how the component fits together to make the assembly.
Take dimension ‘W’ as 68 mm.
(i) a sectional front view on A-A.
(ii) a side view looking at the side on which the nut is fitted.
 Draw to 1:1 scale and provide a title block, parts list, and record a revision assuming that
the Ф14 mounting holes have been revised to be produced as Ф12.
 Provide a title block and parts list.
Figure 4: Components of belt tensioner
(Source: Boundy, AW 2012, Engineering drawing, 8th edn, McGraw-Hill, dimensions altered)
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Marking schedule: Assignment 3
Question 1
Description Marks possible
North datum 10
Traverse table 10
Traverse line 25
Ancillary details 25
Drafting 25
Total 95
Question 2
Description Marks possible
Electrical detail/accuracy 60
Drafting 35
Total 95
Question 3
Description Marks possible
Re-enforcement details 60
Drafting 35
Total 95
Question 4
Description Marks possible
Beam details 30
Dimension 20
Drafting 15
Total 65
Question 5
Description Marks possible
Assembly and detail accuracy 80
Parts list 15
Drafting 50