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Cork Institute of Technology
Bachelor of Engineering in Building Services Engineering – Stage 2
(EBSEN_7_Y2)
Summer 2008
Drawing & Design (CAD) – Paper 1
(Time: 4 Hours)
Instructions Q1 and Q2 must be attempted. Attempt one other question. All questions carry equal marks. Save all AutoCad work frequently.
Examiners: Mr. Michael Walsh Dr. Mervyn Smyth Mr. Declan Leonard
It is recommended that all students attempt Q1 before opening AutoCad.
Materials to be provided for each student. 1 Floppy Disk. 2 sheets ( minimum ) of A4 size isometric drawing paper.
Student Procedure for Saving Files. a) It is important that all students follow this procedure exactly. b) Failure to save work correctly and failure to verify the work is saved correctly may result in a loss of the files. c) No marks can be awarded if work is not presented for correction. d) Write the following information on the floppy disk provided. Name Surname, First Name Class BIS 2 Subject CAD Summer 08 Todays date Insert the floppy disk into the disk drive. e) Use “My Computer” or “Windows Explorer” to generate a new folder on the floppy disk. Name this folder as – Surname Firstname Summer 2008 CAD. Use your own surname and first name in the folder name. f) Save any AutoCad drawings generated using the file names given in the questions. g) Save a copy of this folder in the assessments folder in the BIS06 account.
Q1.
On your answer books supplied, answer the following questions:
a) (i) Buildings generally take on 3 typical structural forms, list these 3 forms.
(ii) Which of these structural forms is best suited to accommodate large scale building services and briefly explain why.
(iii) List 3 different types of foundation.
(iv) With reference to site drainage what do the following abbreviations stand for SVP, AJ, IC, RWG.
(v) Foul Sewers collect water from which sources.
(vi) With the aid of a neat sketch, show what the terms going, riser and nosing refer to on a stairs. (15 marks)
b) (ii) Sketch a strip foundation, include the dpc, dpm, insulation and hardcore. (10 Marks)
Q3. This question uses the compulsory Q2 as a basis for the design of the foul sewer pipe work and the hot and cold pipe work services for this 3 storey hotel wing.
(a) Using AutoCad – Open Q2 drawing which should have been saved as Floor Plans.dwg Immediately save this file as Drainage. dwg Before proceeding, check your list of saved files to make sure you now have more than one saved drawings, i.e. Floor Plans.dwg and Drainage.dwg.
(b) In the drawing Drainage. dwg generate the following layers. Layer name = Foul Sewer Colour Magenta Layer name = Hot Water Colour Red Layer name = Cold Water Colour Blue (7 Marks)
(c) For one of the service ducts backing onto the bathrooms, draw in proposed routes for the foul sewer pipe work, the hot water supply and the cold water supply. Show 100mm diam pipe as full scale = 2 lines 100mm apart. Show others as centre line. All foul sewer outlets feed into a common vertical pipe leading to the basement. All hot and cold pipe work originates from a plant room area in the basement. For clarity on these drawings – keep a min of 50mm clearance around pipes. Indicate vertical sections of pipe work with the appropriate symbols and text. Please use a legible text size. (8 Marks)
(d) Draw an isometric sketch of the foul sewer pipe work, and the hot and cold water pipe work through the basement, ground floor, first floor and second floor. NB: This is not an AutoCad exercise, please use the A4 sized isometric paper provided. If isometric paper is not available, use the squared pages in the centre of an answer book. This is not a freehand sketch – use of rulers or straight edges allowed. Since all service ducts will have identical or mirror image layouts, please show the detail at the service duct behind the bathrooms at only one point on the isometric. Indicate expected diameter of pipe required in the labelling of individual pipe work sections. (10 marks)
Q4. This question uses the compulsory Q2 as a basis for the design of the LPHW central heating pipe work layout for this hotel wing.
(a) Using AutoCad – Open Q2 drawing which should have been saved as Floor Plans.dwg Immediately save this file as LPHW. dwg Before proceeding, check your list of saved files to make sure you now have more than one saved drawings, i.e. Floor Plans.dwg and LPHW.dwg.
(b) In the drawing LPHW. dwg generate the following layers. Layer name = LPHW Flow Colour Red. Layer name = LPHW Return Colour Blue. (4 Marks)
(c) Assume a two pipe LPHW central heating system in this hotel wing. Draw in proposed routes for LPHW pipe work on the first floor plan. For clarity on these drawings – keep pipe runs at least 100mm away from parallel walls and 100mm away from each other. Bedrooms use one 1800mm long radiator. Bathrooms use one 600mm long radiator. Indicate vertical sections of pipe work with the appropriate symbols and text. Please use a legible text size. Indicate expected diameter of pipe required in the labelling of pipe work sections. Save this file as LPHW. dwg (5 Marks)
(d) Draw an isometric sketch of the LPHW work, through the basement, ground floor, first floor and second floor. Include a boiler on the floor of the basement. NB: This is not an AutoCad exercise, please use the A4 sized isometric paper provided. If isometric paper is not available, use the squared pages in the centre of an answer book. This is not a freehand sketch – use of rulers or straight edges allowed. Since all rooms will have identical or mirror image layouts, please show the room detail at only one point on the isometric. Indicate expected diameter of pipe required in the labelling of individual pipe work sections. (8 Marks)
(e) Design and draw to scale a hand sketch of the following fire escape stairs at the end of each corridor. This is not a freehand sketch – use of rulers or straight edges allowed. Two section stairs with intermediate landing between each floor. Vertical distance of 3000mm between floors. Max stairs width 1000mm. Draw an exploded side view of 3 threads showing the going, rise, etc. (8 Marks)
