Pearl Building Rating System - Estidama

Calculation example:
The following example is based on a simple 10 storey building. The table below lists
relevant building parameters assumed in the models as follows:
Geometry
Proposed building Baseline building
Floor Area (m 2 ) 50,000 50,000
Floor-Floor Height (m) 3.4 3.4
Vertical Fenestration
overall glazing ratio*
80% 40%
Vertical Fenestration
SHGC
0.22 0.25
External Shading 1.5m overhangs None
Air Leakage Rate (l/s/m 2 )
U-Values (W/m
3.64 3.64
2 K)
Above-grade walls 0.35 0.705
Roof 0.25 0.36
Floors 0.25 1.986
Vertical Fenestration 2.2 6.81
Annual Solar Gain
(kWh/m 2 )
Annual External
Conduction Gain
(kWh/m 2 )
Annual Infiltration Gain
(kWh/m 2 )
16.8 18.0
16.8 30.6
12.1 12.1
Annual External Heat
Gain (KWh/m 2 )
45.7 60.7
Total Percentage
Reduction
24.7% N/A
Credit Points Achieved 2 N/A
*Glazing Ratio – the ratio of the total area of glazing on a facade to the total façade area
Pearl Building Rating System: Design & Construction, Version 1.0, April 2010 153 of 223