CONSTRUCTION MANAGEMENT
Qualification Level 3 BTEC QCF Diplomas in Construction and the Built Environment
Unit number and title Unit 4 Science and Materials
Assignment no. and title 1of 3 Factors affecting human comfort
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Learning outcomes 1 Know the basic factors that affect human comfort
Criteria reference Assessment criteria 1st Submission Final Submission
P1 Describe the basic factors in simple scientific terms that
influence human comfort in the internal environment. Yes/No Yes/No
P2 Describe how each factor is measured. Yes/No Yes/No
P3 State acceptable values for each factor.
Yes/No Yes/No
M1 Produce clearly worked, accurate answers for three different calculations relating to human comfort in the internal environment. Yes/No Yes/No
D1 Analyse, in both qualitative and quantitative terms, the basic factors that affect human comfort. Yes/No Yes/No
Student declaration I certify that the evidence submitted for this assignment is my own. I have clearly referenced any sources used in the work. I understand that false declaration is a form of malpractice.
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Assessor declaration I certify that the evidence submitted for this assignment is the student’s own. The student has clearly referenced any sources used in the work. I understand that false declaration is a form of malpractice.
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Assignment 1 brief
Assignment written by Steve Atherton Date 18 Dec 2014
Assignment IV’d by Giles Dawes Date 7 Jan 2015
Scenario
A college is converting a disused building into a modern construction management teaching facility. It is keen to make the working environment for the staff and students as comfortable as possible. As a consultant, explain how this can be done by addressing the relevant grading criteria.
P1
Describe a minimum of four factors that influence an individual’s overall perception of comfort in the internal environment. State how these factors affect the individual’s perception of comfort.
P2
Describe how each of the factors described in P1 can be measured; ie what instrument is used. Use images where appropriate.
P3
State an acceptable range of values or specific values, if appropriate, for each of the factors identified above. Correct units should be used at all times.
M1
1 Calculate the U value for a cavity wall made up of 102.5 mm facing brick, 50mm cavity,
50mm insulation, 100mm block and 15mm plaster.
Use the following K values: brick 0.84, cavity 0.13, insulation 0.025, block 0.51 and plaster 0.16 (all k values in W/mK). Take the inside and outside surface resistances as RSi 0.04m2K/W and RSo 0.13m2K/W
2 a) A lamp with an intensity of 2200 cd is 2.5 m above a worktop. Calculate the illumination directly below the lamp.
b) 2 street lamps are 6 m high and 25m apart. If each lamp has an intensity of 20,000 cd
calculate the illumination at a point in the road equidistant from the lamps.
3 A school is 32m from a road. The sound level is measured as 90dB at 2m from the road.
Calculate the sound level 8m from the road and at the school.
D1
Analyse the basic factors that affect human comfort. This should include a basic
discussion of how the thermoregulatory system is affected by air temperature, mean radiant temperature, relative humidity, air speed, rates of air change, activity and clothing level to create the perception of thermal comfort; how specific values for the factors that affect the visual environment interact with the vision system to allow us to perform tasks, and how specific values of the aural environment interact with hearing systems to allow us to concentrate and make the space fit for purpose.
The analysis should include comment on the acceptability of comfort parameters for given locations. This may be either an analysis of the suitability of given parameters for various locations or by recommending and justifying values for the various parameters for given locations.
Feedback sheet
P1 Describe the basic factors in simple scientific terms that influence human comfort in the internal environment
Assessor feedback
P2 Describe how each factor is measured
Assessor feedback
P3 State acceptable values for each factor
Assessor feedback
M1 Produce clearly worked, accurate answers for three different calculations relating to human comfort in the internal environment
Assessor feedback
D1 Analyse, in both qualitative and quantitative terms, the basic factors that affect human comfort
Assessor feedback
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