The document contains climate data for Los Angeles including monthly maximum and minimum temperatures, humidity levels, and rainfall. It uses this data to determine appropriate climate-responsive design criteria for architecture in Los Angeles. Key indicators are identified such as thermal stress, rainfall levels, and humidity. Based on these indicators, design criteria are recommended related to building orientation, layout, wall and roof materials, opening placement and size, and external features.

1. BHAGWAN MAHAVIR COLLEGE OF ARCHITECTURE
Subject : Environmental Science
Topic : Mahoney Table for LOS ANGELES CITY
Faculty :- Ar. Dhruvita Mahida
Ar.Nirav khandwala
Prepared By :- Yatharth Thakkar (82)

3. Months Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Monthly mean max. 20.1 20.3 21.2 22.6 23.6 25.6 28.4 29.1 28.4 25.8 22.7 19.8
Monthly mean min. 8.8 9.6 10.6 11.9 13.6 15.7 17.8 17.3 17.3 14.8 11.1 8.6
Monthly mean
range
14.4 14.9 15.9 17.2 18.6 20.6 23 23.4 22.8 20.3 16.9 14.2
Humidity
Group
Average
RH
1 BELOW 30%
2 30 – 50%
3 50 – 70%
4 ABOVE 70%
HIGH AMT
29.1 23.9
8.6 13.1
LOW AMR
Months Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Monthly mean max. 20.1 20.3 21.2 22.6 23.6 25.6 28.4 29.1 28.4 25.8 22.7 19.8
Monthly mean min. 8.8 9.6 10.6 11.9 13.6 15.7 17.8 17.3 17.3 14.8 11.1 8.6
Monthly mean
range
14.4 14.9 15.9 17.2 18.6 20.6 23 23.4 22.8 20.3 16.9 14.2
Air Temperature :
° C
Relative
Humidity: (%)

4. COMFERT LIMIT FOR
DIFFERENT HUMIDITY
GROUPS
Months
AMT OVER 20°C AMT 15 - 20°C AMT BELOW 15°C
DAY NIGHT DAY NIGHT DAY NIGHT
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
Months Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec TOTAL
Rainfall (mm) 79.2 96.5 61.7 23.1 2.3 0.3 1 6.1 16.8 26.4 35.7 59.2 379.2
AVERAGE MONTHLY TEMPERATURE IS
26.95° C AS PER ABOVE SLIDE
DAY COMFERT (UPPER) = 27 ° C
DAY COMFERT (LOWER) = 22° C
NIGHT COMFERT (UPPER) = 21
° C

5. Diagnosis: ° C
Months Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Monthly mean max. 20.1 20.3 21.2 22.6 23.6 25.6 28.4 29.1 28.4 25.8 22.7 19.8
Day comfort upper 29 29 29 27 27 27 27 27 27 29 29 29
Lower 23 23 23 22 22 22 22 22 22 23 23 23
Monthly mean min. 8.8 9.6 10.6 11.9 13.6 15.7 17.8 17.3 17.3 14.8 11.1 8.6
Night comfort Upper 23 23 23 21 21 21 21 21 21 23 23 23
Lower 17 17 17 17 17 17 17 17 17 17 17 17
Thermal stress day C C C O O O H H H O O C
Night C C C C C C O O O C C C
DATA TAKEN FROM FIRST TABLE
O = COMFERTABLE CLIMATE= MONTHY MAX. & MIN. ARE BETWEEN UPPER &
LOWER LIMIT
C = COLD CLIMATE= MONTHY MAX. & MIN. ARE BELOW LOWER LIMIT
H = HOT CLIMATE= MONTHY MAX. & MIN. ARE ABOVE UPPER LIMIT

6. INDICATORS
THERMAL STRESS
RAINFALL
HUMIDITY
GROUP
MONTHLY
MEAN RANGE
DAY NIGHT
H1
H 4
H 2,3 LESS THAN 10
H2 O
H3 OVER 200 mm
A1 1,2,3 MORE THAN 10
A2 H 1,2
H O 1,2
A3 C
Months Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec TOTAL
Humid H1 √ √ √ 3
H2 √ √ √ √ √ 5
H3
Arid A1 √ √ √ √ √ √ 6
A2 √ √ √ 03
A3 √ √ √ √ √ √ √ √ √ 9
Table For Selecting Indicators
Indicators

7. H1 H2 H3 A1 A2 A3 DESIGN CRITERIAS
0-10
√
1
Orientation north & south
(long axis east-west)
11,12
5-12
0-4 2 Compact courtyard planning
H1 H2 H3 A1 A2 A3 DESIGN CRITERIAS
11,12 √ 3 Open spacing for breeze penetration
2-10 4 As 3, but protection from hot & cold
wind
0,1 5 Compact layout of estates
Layout:
Spacing:
Indicator totals
H1 H2 H3 A1 A2 A3
3 5 4 6 3 9

8. H1 H2 H3 A1 A2 A3 DESIGN CRITERIAS
0-2 12 Light walls, short time-lag
3-12 13 Heavy external & internal walls
H1 H2 H3 A1 A2 A3 DESIGN CRITERIAS
0-5 14 Light, insulated roofs
6-12 15 Heavy roofs, over 8 hr. time-lag
H1 H2 H3 A1 A2 A3 DESIGN CRITERIAS
2-12 16 Space for out-door sleeping required
H1 H2 H3 A1 A2 A3 DESIGN CRITERIAS
3-12 √ 17 Protection from heavy rain necessary
Walls:
Roofs:
Out Door
Sleeping:
Rain
protection:
Indicator totals
H1 H2 H3 A1 A2 A3
3 5 4 6 3 9

9. Indicator totals
H1 H2 H3 A1 A2 A3
3 5 4 6 3 9
H1 H2 H3 A1 A2 A3 DESIGN CRITERIAS
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%
H1 H2 H3 A1 A2 A3 DESIGN CRITERIAS
3-12
√ 6
In north & south walls at body height
on wind ward side
1-2
0-5
6-12
7
As above, openings also in internal
walls
0 2-12
Size of
opening:
Position of
opening:

10. Indicator totals
H1 H2 H3 A1 A2 A3
3 5 4 6 3 9
H1 H2 H3 A1 A2 A3 DESIGN CRITERIAS
0-2 8 Exclude direct sunlight
2-12 √ 9 Provide protection from rain
H1 H2 H3 A1 A2 A3 DESIGN CRITERIAS
0-2 10 Low thermal capacity
3-12 11 Heavy, over 8 hr. time-lag
H1 H2 H3 A1 A2 A3 DESIGN CRITERIAS
10-12 0-2 √ 12 Light, reflective surface, cavity
3-12
13 Light, well insulated
0-9 0-5
6-12
14 `
Protection of openings:
Walls &
Floors:
Roofs:

11. Indicator totals
H1 H2 H3 A1 A2 A3
3 5 4 6 3 9
H1 H2 H3 A1 A2 A3 DESIGN CRITERIAS
1-12 15 Space for out-door sleeping
1-12 √ 16 Adequate rain water drainage
External features: