Review Task 1

8/7/2019 Review Task 1

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Review Task 1.

1) How do you define a building element?

An element is an individual part of a building such as a wall, a floor or roof etc. Each element

has its function within the construction.

Elements

1. Foundation. The foundations

function is to provide support to

the structure.

2. The framework provides stability to

the structure.

3. Floors and ceilings provide steady

load-bearing platforms.

4. Exterior walls support the roof and

protect occupants from the

elements of weather.

5. Windows allow light in they also

give a view of the outside which can

have an effect on a person’s mental

health.

6. The roof provides shelter keeping

the internal structure and

occupants dry.

7. Internal walls separate the overall

floor space into smaller rooms.

(Diagram from www.petervaldivia.com)

2) Why is the weight of all occupants using a building, together with the weight of all

furniture and goods called “live” loading?

Live loading is a term for the loading created by the weight of the occupants, the furniture;

snow which falls and settles on the roof is considered a live loading. These loads are

considered as acting positively on a structure; live loads are subject to change and therefore

can only be estimated

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3) What are the stresses that are been placed onto the following elements of

construction?

An external wall supporting a roof. A concrete floor with a heavy filing cabinet placed on it.

A sheet of plywood fixed over a timber framework.

An external wall supporting a roof.

Compression.

A concrete floor with a heavy filing cabinet placed on it.

Shear.

SHEAR



sheet of plywood fixed over a timber framework.

Tension.

4) As a group discuss the following performance requirements of a building and agree

on a group ranking.

Performance requirement Group ranking 1 = most important to 8 = least important

Structural stability. 1

Durability. 2

Thermal insulation. 5

Exclusion of moisture. 3

Acoustic insulation. 7

Flexibility. 8

Aesthetics. 6

Buildibility. 4

Individually decide your ranking of the following performance requirements.

Performance requirement My ranking 1 = most important to 8 = least important

Structural stability. 1

Durability. 2

Thermal insulation. 6

Exclusion of moisture. 4

Acoustic insulation. 7

Flexibility. 8

Aesthetics. 5

Buildibility. 3



5) Explain briefly why you chose structural stability as the most important.

Structural stability is the most important in my view because I don’t want my structure to

move unnecessarily when a load is introduced such as occupant loading or wind loads.Excess movement in a structure can cause severe weaknesses and structural collapse

6) Explain briefly why you chose flexibility as the least important.

Flexibility is the least important to me, as a change to the structure is not done many times

during a buildings life span maybe once or twice, as long as the structure is safe, warm, dry;

I feel it is fulfilling its purpose as a dwelling the aesthetics can be changed with redecorating

the visual size of a room can be made to appear larger with clever use of colour.

7) Give an example of a building material that; Has a high thermal resistivity value:-

Has a low thermal resistivity value:-

High thermal resistivity value:-

Fibre glass insulation.

Insulant Density (kg/m3) Thermal conductivity

(W/mK)

Window Glass 2200 0.8 to 1.0

Glass fibre 10.5 0.035 to 0.045

Expanded polystyrene 25 0.033 to 0.04

Extruded polystyrene 27 0.02 to 0.03

PUR/PIR 30-40 0.02 to 0.03

(Table from www.colorcoat-online.com)

Used for property insulation in lofts and walls because of its low thermal conduction.

Low thermal resistivity value:-

Glass

Glass has a thermal conductivity of 0.8W/mK. A lot of heat can be lost through windows in

properties but the use of double glazed units improves this figure.

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Documents

Review Task 1