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Professional Skills v1.2

Engineering Drawing – Presentation To present drawings in a clear and professional manner To produce and interpret drawings about the built environment using industry standards

These lecture notes are concerned with presentation, the content of drawings will be covered in other parts of the Unit.

For reference, see (amongst other things): BS ISO 128:1982 Technical drawings. General principles of presentation. BS ISO 128-20:2001 Technical drawings. General principles of presentation. Basic conventions for lines. BS ISO 128-21:2001 Technical drawings. General principles of presentation. Preparation of lines by CAD systems. BS ISO 128-22:1999 Technical drawings. General principles of presentation. Basic conventions and applications for leader lines and reference lines. BS ISO 128-23:1999 Technical drawings. General principles of presentation. Lines on construction drawings. BS ISO 128-30:2001 Technical drawings. General principles of presentation. Basic conventions for views. BS ISO 128-40:2001 Technical drawings. General principles of presentation. Basic conventions for cuts and sections. BS ISO 128-50:2001 Technical drawings. General principles of presentation. Basic conventions for representing areas on cuts and sections. BS ISO 129:1985 Technical drawings. Dimensioning. General principles, definitions, methods of execution and special indications. BS ISO 5455:1995 Technical drawings. Scales.

Paper A-series paper is used Designation A0 A1 A2 A3 A4

Size (mm) 841 x 1189 594 x 841 420 x 594 297 x 420 210 x 297

An A0 sheet has an area of 1m2 The sides are in the proportion 1 : 2 The sides of 35mm film have the same proportions

Border (or margin) The drawing should have a border of about 10 mm Space should be left for binding and hole-punching, if the drawing is to be placed in a file

University of Portsmouth Department of Civil Engineering

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Professional Skills v1.2

Title Block and Notes Refer to the example on page 4.

Organisation e.g. University of Portsmouth, Department of Civil Engineering May include logo

Title (Job and Drawing) Job Title (e.g. Portland Building) Drawing Title (e.g. Ground Floor Plan)

Drawing Number A reference which identifies the drawing within the job and organisation

Revision Number Only used if changes are made to the drawing after it has been initially published Should increment with each revision (e.g. 1,2,3,… or A,B,C,… ) Details of each revision should be kept in Revision Table, in Notes area (see later)

Issue Number Should be unique to each paper copy of the drawing that is made (may be written in by hand after printing) An Issue Book should show details of who the particular drawing was issued to, and when it was issued

Scale Express as ratio

drawing unit : real world unit

Enlargement scales Full size Reduction scales

50:1 5:1

20:1 2:1

10:1 1:1 1:10 1:100 1:1000

1:2 1:20 1:200 1:2000

1:5 1:50 1:500 1:5000

Scales other than those above should only be used in exceptional circumstances (ensure that sensible numbers are used, e.g. 1:2500, not 1:2384) Check that the scale on the printed drawing is correct – this is very important (measure it) Different parts of the drawing may be to different scales – state the main scale in the Title Block, and other scales next to the relevant drawing part For ground cross sections, it is common to use a vertical scale which is different (enlarged) from the horizontal scale

Date The date of the original drawing (later revisions will have their own date noted with the details of the revision)

Drawn By The name or initials of the (principal) person who created the drawing For student assignments, this should normally be your Student ID Number

University of Portsmouth Department of Civil Engineering

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Professional Skills v1.2

Approval Signature The original drawing should be checked and approved by a competent person (e.g. your Lecturer) Later revisions have their own approval signatures (see Notes and Revisions Table)

Notes A separate area, not part of the Title Block (see Location, later) Include relevant notes, e.g.: 1. All dimensions in mm 2. All levels in metres 3. Do not scale off drawing – if in doubt, ask May also include a key to symbols used in the drawing May include a Location Figure (a small drawing which shows the location of the main drawing relative to a larger area) Should also include a Revisions Table

Revisions Table In Notes area The table may be upside down (with column headings in the bottom row) Revision Ref

Details

Date

Signature

Location Title Block should be in the bottom right-hand corner – for easy searching of required drawing in a collection of drawings Notes should be vertically above, or horizontally to the left of the Title Block (Notes are not always necessary)

Notes

Drawing area

Drawing area

Title Block

University of Portsmouth Department of Civil Engineering

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Professional Skills v1.2

Example Layout Notes 1. All dimensions in mm 2. All levels in metres 3. Do not scale off drawing – if in doubt, ask

Drawing area advice On a site drawing, show levels instead of vertical dimensions, e.g. 3.764

3.764

3.764

Ensure there are enough levels and dimensions for buildability Do not over-dimension Acceptable units are millimetres, metres and kilometres

Rev ref

Details

Date

Sig

University of Portsmouth

Department of Civil Engineering Job Title: Drg. Title: Drg. No.:

Rev.:

Issue:

Scale:

Date:

Drawn by:

Approved:

Folding a Drawing See extract from British Standard on the Professional Skills unit web (BS 1192:Part 1:1984) http://www.civil.port.ac.uk/communications/ The BS shows how to fold a drawing to ensure that the Title Block is always visible The folding method allows drawings to be placed in a ring binder file and opened for viewing without removing the drawing from the file All paper sizes from A3 to A0 are included

University of Portsmouth Department of Civil Engineering

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