An instant, computed analysis of your plot: how much you can build, and how the sun and breeze fall on it. Fill the inputs below, then click Save as PDF. For certified flood, soil and structural surveys, see the site-survey section at the end.
1. Sizing & buildable area
Defaults are typical; replace the setbacks with the official Faisal Town / RDA byelaw figures for an exact result.
Computed from your plot dimensions and the setbacks you entered. Mumty, stairs, porch and projections vary by design; confirm the final covered area and byelaw limits with Alammana’s architect.
2. Solar, orientation & ventilation
Location: Faisal Hills (33.73°N). Sun geometry is computed exactly for this latitude.
Sun path across the year
| Season | Noon sun height | Daylight | Sunrise / sunset bearing |
|---|---|---|---|
| Summer (Jun) | 80° | 14.2 h | 61° / 299° |
| Equinox (Mar/Sep) | 56° | 12.0 h | 90° / 270° |
| Winter (Dec) | 33° | 9.8 h | 119° / 241° |
In summer the sun is nearly overhead at noon and rises in the NE / sets in the NW; in winter it stays low in the south and rises ESE / sets WSW. This is what drives heat and shading on each wall.
Solar panels
Best fixed tilt: 30° facing due south (seasonal: ~17° summer, ~49° winter). A 5 kW system here generates roughly 25.0 kWh/day (~750 kWh/month) at ~5 peak-sun-hours. Mount on the roof or the south side; keep the south roof clear of water tanks/parapet shadow.
Orientation & room layout — East-facing plot
Place bedrooms on the EAST or NORTH (gentle morning light, cool afternoons). Keep the main lounge/drawing room on the SOUTH for warm winter sun that is easy to shade in summer. Put service spaces (kitchen, stairs, baths, store, car porch) on the WEST as a heat-buffer against the harsh afternoon sun.
West and south-west walls take the most heat (afternoon sun + summer 'Loo'). Use deep overhangs/chajjas (≈0.5-0.6m) over south windows, minimise west-facing glazing, and consider a double wall or vertical shading on the west. A light-coloured roof + insulation cuts peak summer load sharply.
Islamabad's prevailing breeze is from the NORTH-WEST. Place primary openings on the NW and an outlet on the SE for cross-ventilation; stack/roof vents help exhaust hot air. Avoid sealing the NW face.
This is a Tier-1 (computed) analysis from verified location data and building science. Flood-risk, soil bearing and exact wind speed require an on-site survey — ask Alammana for a certified site report.
3. Certified site survey (premium add-on)
Flood risk, soil bearing capacity and exact wind loading cannot be computed from a map — they require an on-site engineering survey. Alammana arranges these as a certified, scheduled service:
- · Flood-risk & drainage assessment (engineer site visit)
- · Soil / geotechnical bore test (lab report)
- · Structural & wind-load design check
Sections 1–2 are computed from verified location data and building science (Tier 1). Section 3 requires a certified on-site survey (Tier 2). Figures are indicative; confirm byelaw limits and final design with Mr. Ashhal and a licensed architect/engineer before construction.