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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

what is Nano technology ?
Bob Reply
write examples of Nano molecule?
The nanotechnology is as new science, to scale nanometric
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
for teaching engĺish at school how nano technology help us
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
what is the actual application of fullerenes nowadays?
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
is Bucky paper clear?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Do you know which machine is used to that process?
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.
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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