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Building Spacing Calculator

Lifestyle Tools

Insolation spacing factor and winter-solstice solar altitude method

Quick Answer

Building Spacing Calculator: Insolation spacing factor and winter-solstice solar altitude method. Building Spacing Calculator uses standard everyday life formulas to compute accurate results instantly.

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m
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Minimum spacing54.57 m

How it works

  1. 1Min spacing = (front height - sill height) x spacing factor
  2. 2(33 − 0.9) × 1.7 = 54.57 m
  3. 3Measured gap should be ≥ the minimum spacing

Key facts

National standard: major cities require 2h sun on Grand Cold day; other areas 1h on Winter Solstice. Typical factors: Harbin ~2.0, Beijing ~1.6-1.7, Shanghai ~1.3, Guangzhou ~1.0. Point towers require software simulation instead of the factor method.

The factor method is a simplified check for slab buildings facing due south. East/west offset orientation allows a 0.9-0.95 reduction; old-district redevelopment may take 0.8-0.9. Heights count from outdoor ground to parapet; if the front tower has podium shops without sunlight requirements, that podium height can be deducted per local rules.

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How to Use

  1. Enter scenario values: fill real-life numbers into the Building Spacing Calculator (defaults work for a quick try).
  2. Instant results: everything computes live, no button needed.
  3. Read the advice: results come with practical tips, reference standards and pitfalls.
  4. Compare options: adjust parameters to compare choices side by side.

Key Points

  • Building Spacing Calculator is a free online everyday life tool — open and use, no sign-up.
  • All calculations run locally in your browser; your data never leaves the device.
  • Key capability: Insolation spacing factor and winter-solstice solar altitude method.
  • Results come with formulas and reference tables so you can verify every number.

Formula & How It Works

Building Spacing Calculator formula

Building Spacing Calculator uses standard everyday life formulas to compute accurate results instantly.

FAQ

How do I use the Building Spacing Calculator?
Open the page and fill in the input fields — results update automatically. Insolation spacing factor and winter-solstice solar altitude method.
Are the results accurate?
Yes. Standard formulas and conversion factors are used and verified.
Is it free? Do I need to sign up?
Completely free. No registration, login or download required.
Does it work on mobile?
Yes. The responsive design works on phones, tablets and desktops.
Is my data saved?
No. Everything runs locally in your browser.

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Source & Updates

Based on common formulas and industry conventions. Last updated: 2025-07

Last updated:

Formulas and content on this page are reviewed by the YiJianSuan team. For reference only — official sources prevail.

Maintained and periodically reviewed by the YiJianSuan editorial team — review process in ourEditorial Policy.

Cite this page: YiJianSuan. Building Spacing Calculator[EB/OL]. https://www.yijiansuan.com/en/c/life/sunlight

Results provided by this tool are for reference only and do not constitute professional advice.