mahoney's table
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Mahoney’s Table
AR205Taught on 2/11/2011
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TABLE 1
LocationLongitudeLatitudeAltitude
J F M A M J J A S O N D High AMT
Monthly mean max.
Monthly mean min.
Monthly mean range Low AMR
Air temperature : °C
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TABLE 1
Location Baghdad, IraqLongitude 44° 24´ E. Latitude 33° 20´ N.Altitude 34 m
J F M A M J J A S O N D High AMT
Monthly mean max. 16 18.5 22 29 36 41 43.5 43.5 40 34 24.5 17.5 43.5 23.5
Monthly mean min. 4 5.5 9 14.5 20 23.5 25.5 24.5 21 16 10.5 5 4 39.5
Monthly mean range 12 13 13 14 16 17.5 18 18 19 18 14 12.5 Low AMR
Air temperature : °C
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Relative humidity: %
Humidity group: 1 If average RH: below 30 %
2 30-50 %
3 50-70%
4 Above 70 %
Monthly mean max. a.m.
Monthly mean min. p.m.
Average
Humidity group
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Relative humidity: %
Humidity group: 1 If average RH: below 30 %
2 30-50 %
3 50-70%
4 Above 70 %
Monthly mean max. a.m. 87 78 74 68 46 34 32 32 38 50 67 89
Monthly mean min. p.m. 50 41 35 27 18 13 12 13 15 21 39 51
Average 68.5 59.5 54.5 47.5 32 23.5 22 23.5 26.5 35.5 53 70
Humidity group 3 3 3 2 2 1 1 1 1 2 3 3
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Rain and wind
Rainfall, mm Total
Wind, prevailing
Wind, secondary
J F M A M J J A S O N D
AMT over 20 °C
AMT 15-20 °C
AMT below 15 °C
Comfort limits Day Night Day Night Day Night
Humidity groups 1 26-34 17-25 23-32 14-23 21-30 12-21
2 25-31 17-24 22-30 14-22 20-27 12-20
3 23-29 17-23 21-28 14-21 19-26 12-19
4 22-27 17-21 20-25 14-20 18-24 12-18
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Rain and wind
Rainfall, mm 24 25 28 15 7 0 0 0 0 3 22 26 150 Total
Wind, prevailing NW.
NW.
NW.
NW.
NW.
NW.
NW. NW.
NW.
NW.
NW. NW.
Wind, secondary SE. SE. N N N N N & W N N N N SE
J F M A M J J A S O N D
AMT over 20 °C
AMT 15-20 °C
AMT below 15 °C
Comfort limits Day Night Day Night Day Night
Humidity groups 1 26-34 17-25 23-32 14-23 21-30 12-21
2 25-31 17-24 22-30 14-22 20-27 12-20
3 23-29 17-23 21-28 14-21 19-26 12-19
4 22-27 17-21 20-25 14-20 18-24 12-18
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TABLE 2-Diagnosis
J F M A M J J A S Q N D
Monthly mean max. AMT
Day comfort: upper
lower
Monthly mean min.
Night comfort: upper lower
Thermal stress: day
night
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TABLE 2-Diagnosis
J F M A M J J A S Q N D
Monthly mean max. 16 18.5 22 29 36 41 43.5 43.5 40 34 24.5 17.5 23.5 AMT
Day comfort: upper 29 29 29 31 31 34 34 34 34 31 29 29
lower 23 23 23 25 25 26 26 26 26 25 23 23
Monthly mean min. 4 5.5 9 14.5 20 23.5 25.5 24.5 21 16 10.5 5
Night comfort: upper
23 23 23 24 24 25 25 25 25 24 23 23
lower 17 17 17 17 17 17 17 17 17 17 17 17
Thermal stress: day C C C O H H H H H H O C
night C C C C O O H O O C C C
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Indicators
Humid: H1
H2 Total
H3
Arid: A1
A2
A3
J F M A M J J A S O N D
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Applicable when: Meaning: Indicator
Thermal stress Rainfall
HumidityGroup
Monthly mean range
Day Night
Air movement essential H1 H 4
H 2.3 Less than 10
Air movement desirable H2 O 4
Rain protection necessary H3 Over 200 mm
Thermal capacity necessary
A1 1,2,3 More than 10
Out-door sleeping desirable
A2 H 1,2
H O 1,2 More than 10
Protection from cold A3 C
INDICATORS
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Indicators
Humid: H1 0
H2 0 Total
H3 0
Arid: A1 √ √ √ √ √ √ √ √ √ √ √ √ 12
A2 √ √ √ √ √ 5
A3 √ √ √ √ 4
J F M A M J J A S O N D
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Indicator Totals from Table 2
H1 H2 H3 A1 A2 A3
Layout0-10 1 Orientation north and south
(long axis east-west)11,12 5-12
0-4 2 Compact courtyard planning
Spacing 11,12 3 Open spacing for breeze
penetration2-10 4 As 3, but protection form hot
and cold wind0,1 5 Compact lay-out of estates
Table 3: Recommended Specifications
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Indicator Totals from Table 2
H1 H2 H3 A1 A2 A3
0 0 0 12 5 4Layout
0-10 1 Orientation north and south (long axis east-west)11,12 5-12
0-4 √ 2 Compact courtyard planning
Spacing 11,12 3 Open spacing for breeze
penetration2-10 4 As 3, but protection form hot
and cold wind0,1 5 Compact lay-out of estates
Table 3: Recommended Specifications
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Air movement
3-12 6 Rooms single banked, permanent provision for air movement
1,2 0-5
6-12 7 Double banked rooms, temporary provision for air movement
02-12
0,1 8 No air movement requirement
Openings
0,1 0 9 Large openings, 40-80%
11,12 0,1 10 Very small openings, 10-20%
Any other conditions 11 Medium openings, 20-40%
Indicator Totals from Table 2
H1 H2 H3 A1 A2 A3
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Air movement
3-12 6 Rooms single banked, permanent provision for air movement
1,2 0-5
6-12√
7 Double banked rooms, temporary provision for air movement
02-12
0,1 8 No air movement requirement
Openings
0,1 0 9 Large openings, 40-80%
11,12 0,1 √ 10 Very small openings, 10-20%
Any other conditions 11 Medium openings, 20-40%
Indicator Totals from Table 2
H1 H2 H3 A1 A2 A3
0 0 0 12 5 4
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Walls0-2 12 Light walls, short time-lag
3-12 13 Heavy external and internal walls
Roofs0-5 14 Light, insulated roofs
6-12 15 Heavy roofs, over 8 h time-lag
Out-door sleeping 2-12 16 Space for out-door sleeping
required
Indicator Totals from Table 2
H1 H2 H3 A1 A2 A3
Rain protection3-12 17 Protection from heavy rain
necessary
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Walls0-2 12 Light walls, short time-lag
3-12 √ 13 Heavy external and internal walls
Roofs0-5 14 Light, insulated roofs
6-12 √ 15 Heavy roofs, over 8 h time-lag
Out-door sleeping 2-12 √ 16 Space for out-door sleeping
required
Indicator Totals from Table 2
H1 H2 H3 A1 A2 A3
0 0 0 12 5 4
Rain protection3-12 17 Protection from heavy rain
necessary
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Table 4: Detail Recommendations
Indicator totals from Table 2H1 H2 H3 A1 A2 A3
Size of opening0,1 0 1 Large: 40-80%
1-12 2 Medium: 25-40%
2-5
6-10 3 Small: 15-25%
11,12 0-3 4 Very small: 10-20%
4-12 5 Medium: 25-40%
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Position on openings3-12 6 In north and south at body height
on windward side1-2 0-5
6-12 7 As above, openings also in internal walls
0 2-12
Protection of openings0-2 8 Exclude direct sunlight
2-12 9 Provide protection from rain
Walls and floors0-2 10 Light, low thermal capacity
3-12 11 Heavy, over 8 h time-lag
Indicator totals from Table 2H1 H2 H3 A1 A2 A3
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Roofs10-12 0-2 12 Light, reflective surface, cavity
3-12 13
0-9 0-5 Light, well insulated
6-12 14 Heavy, over 8 h time-lag
External features1-12 15 Spaces for out-door sleeping
1-12 16 Adequate rainwater drainage
Indicator totals from Table 2H1 H2 H3 A1 A2 A3
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