1. Mahoney’s Table
AR205
Taught on 2/11/2011

2. TABLE 1
Location
Longitude
Latitude
Altitude
Air temperature : °C
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

3. TABLE 1
Location Baghdad, Iraq
Longitude 44° 24´ E.
Latitude 33° 20´ N.
Altitude 34 m
Air temperature : °C
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

4. Relative humidity: %
Monthly mean max. a.m.
Monthly mean min. p.m.
Average
Humidity group
Humidity group: 1 If average RH: below 30 %
2 30-50 %
3 50-70%
4 Above 70 %

5. Relative humidity: %
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
Humidity group: 1 If average RH: below 30 %
2 30-50 %
3 50-70%
4 Above 70 %

6. Rain and wind
Rainfall, mm Total
Wind, prevailing
Wind, secondary
J F M A M J J A S O N D
AMT AMT AMT
over 20 °C 15-20 °C 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

7. 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 AMT AMT
over 20 °C 15-20 °C 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

8. 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

9. 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

10. Indicators
Humid: H1
H2 Total
H3
Arid: A1
A2
A3
J F M A M J J A S O N D

11. INDICATORS
Applicable when: Thermal Humidity Monthly mean
Meaning: Indicator stress Rainfall Group 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 A1 1,2,3 More than 10
necessary
Out-door sleeping A2 H 1,2
desirable H O 1,2 More than 10
Protection from cold A3 C

12. 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

13. Table 3: Recommended Specifications
Indicator Totals from Table 2
H1 H2 H3 A1 A2 A3
Layout
0-10 1 Orientation north and south
11,12 5-12 (long axis east-west)
0-4 2 Compact courtyard planning
Spacing
11,12 3 Open spacing for breeze
penetration
2-10 4 As 3, but protection form hot
and cold wind
0,1 5 Compact lay-out of estates

14. Table 3: Recommended Specifications
Indicator Totals from Table 2
H1 H2 H3 A1 A2 A3
0 0 0 12 5 4
Layout
0-10 1 Orientation north and south
11,12 5-12 (long axis east-west)
0-4 √ 2 Compact courtyard planning
Spacing
11,12 3 Open spacing for breeze
penetration
2-10 4 As 3, but protection form hot
and cold wind
0,1 5 Compact lay-out of estates

15. Indicator Totals from Table 2
H1 H2 H3 A1 A2 A3
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
2-12
0
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%

16. Indicator Totals from Table 2
H1 H2 H3 A1 A2 A3
0 0 0 12 5 4
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
2-12
0
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%

17. Indicator Totals from Table 2
H1 H2 H3 A1 A2 A3
Walls
0-2 12 Light walls, short time-lag
3-12 13 Heavy external and internal
walls
Roofs
0-5 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
Rain protection
3-12 17 Protection from heavy rain
necessary

18. Indicator Totals from Table 2
H1 H2 H3 A1 A2 A3
0 0 0 12 5 4
Walls
0-2 12 Light walls, short time-lag
3-12 √ 13 Heavy external and internal
walls
Roofs
0-5 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
Rain protection
3-12 17 Protection from heavy rain
necessary

19. Table 4: Detail
Recommendations
Indicator totals from Table 2
H1 H2 H3 A1 A2 A3
Size of opening
0,1 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%

20. Indicator totals from Table 2
H1 H2 H3 A1 A2 A3
Position on openings
3-12 6 In north and south at body height
on windward side
1-2 0-5
6-12 7 As above, openings also in
internal walls
0 2-12
Protection of openings
0-2 8 Exclude direct sunlight
2-12 9 Provide protection from rain
Walls and floors
0-2 10 Light, low thermal capacity
3-12 11 Heavy, over 8 h time-lag

21. Indicator totals from Table 2
H1 H2 H3 A1 A2 A3
Roofs
10-12 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 features
1-12 15 Spaces for out-door sleeping
1-12 16 Adequate rainwater drainage