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Grade 9

Architectural planning

Module 9

The skill of drawing on scale

Activity 1:

To do an architectural drawing of the new classroom

An architectural drawing is called a plan. The house you live in was first planned by an architect and the plans were given to the builder who built the house according to the plan. A plan is more complex than an orthographic drawing. It often includes the building materials, kitchen and bathroom layout, furniture, electrical points and water layout. All plans must comply with building regulations and must be approved by a local building depart­ment. Plans are used to determine the cost of a building. The building cost of a house these days varies from R2 000 to R5 000 per square meter (R2 000 - R5 000 / m2 ).

  • The illustration below is a simple plan of a garage and store, which a person built next to his house.




east elevation: 1:100



Focus task a

Use grid paper and produce a location drawing (plan view) of your classroom. You must indicate where the doors and windows are to be placed. Also add dimensions to your drawing. The grid will help you with the scale. Use one block for 1 meter. Calculate what the cost of the classroom will be if the building cost is R3 000 per square meter (R3 000 / m 2 ).

The following is an example of a plan view of a building.

LO 1.9

Activity 2:

To develop a scale model of the new classroom

Most architects produce scale models to show their clients what the final product will look like. Materials such as paper, cardboard or styrofoam can be used to convert all the 2-D drawings into a 3-D model. Cardboard can easily be cut and then glued on to grid paper to establish the right scale. Add some colour and you have developed a demonstration model.

Focus task b

1. Produce a scale model of your classroom. You might leave one section of the roof off to show the layout on the inside.

LO 1.10

2. Formulate at least five criteria for the evaluation of your plan (refer to the design brief), and evaluate the model. Write down the outcome.

LO 1.13

3. Present your idea to the rest of the class.

LO 1.15


Learning outcomes(LOs)
LO 1
TECHNOLOGICAL PROCESSES AND SKILLS The learner will be able to apply technological processes and skills ethically and responsibly using appropriate information and communication technology.
Assessment standards(ASs)
We know this when the learner:
investigates:1.1 identifies and explains a problem, need or opportunity from a real-life context, and investigates the context, the nature of the need, the environmental situation, and the people concerned;
1.4 uses a variety of available technologies and methods to:
  • locate (e.g. use library referencing system, database searches, indexes);
  • collect (questionnaires, data collection forms, requests for information, information searches, literature surveys);
  • compare;
  • sort;
  • verify;
  • evaluate;
  • store information;
designs:1.5 writes or communicates a short and clear statement or a design brief for the development of a product or system related to a context, problem, need or opportunity that has been identified by self;
1.6 lists product specifications and design specifications and constraints for a solution to an identified problem, need or opportunity based on all of the design key words listed below:
  • people, age, target market, human rights, access;
  • purpose, function, what the product will do;
  • appearance and aesthetics: form, colour, shape, feel;
  • environment: where product will be used or made, impact on the environment in the long and short term;
  • safety: for users and manufacturers;
  • cost, cost of materials, wastage, cost of manufacture, maximum selling price;
  • ergonomics;
  • quality;
  • production;
1.7 generates a range of possible solutions that are significantly different from each other, and that show clear links to the design brief and specifications and constraints;
makes:1.9 develops plans for making that include all of the following:
  • resource lists (e.g. materials lists, tools, people, cost);
  • formal drawings showing dimensions or quantities (e.g. orthographic, oblique or isometric views, sequence drawings, exploded views);
  • manufacturing sequence;
1.10 chooses and uses appropriate tools and materials to make designed products with precision and control by measuring, marking, cutting or separating, shaping or forming, joining or combining, and finishing a range of materials accurately and efficiently;
evaluates:1.13 evaluates the product or system based on self-generated objective criteria linked directly to the design brief, specifications and constraints using self-designed procedures (e.g. surveys, questionnaires, testing procedures) for self-testing, and suggests sensible improvements or modifications that would clearly result in a more effective or higher-quality end product;
communicates:1.15 presents ideas (in a project portfolio) using formal techniques, in two-dimensional or three-dimensional sketches, circuit diagrams or systems diagrams that include all of the following features:
  • use of SA conventional drawing standards (e.g. scale, outlines, dimension lines, first and first angle projection;
  • notes that clarify design reasoning and key choices;
  • impressive enhancements of significant sketches (e.g. colour, texture, shade, thick and thin lines, shadow).

Questions & Answers

so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
many many of nanotubes
what is the k.e before it land
what is the function of carbon nanotubes?
I'm interested in nanotube
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
what is system testing
what is the application of nanotechnology?
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
anybody can imagine what will be happen after 100 years from now in nano tech world
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
silver nanoparticles could handle the job?
not now but maybe in future only AgNP maybe any other nanomaterials
I'm interested in Nanotube
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
can nanotechnology change the direction of the face of the world
Prasenjit Reply
At high concentrations (>0.01 M), the relation between absorptivity coefficient and absorbance is no longer linear. This is due to the electrostatic interactions between the quantum dots in close proximity. If the concentration of the solution is high, another effect that is seen is the scattering of light from the large number of quantum dots. This assumption only works at low concentrations of the analyte. Presence of stray light.
Ali Reply
the Beer law works very well for dilute solutions but fails for very high concentrations. why?
bamidele Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Technology grade 9. OpenStax CNX. Sep 15, 2009 Download for free at http://cnx.org/content/col11071/1.1
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