SANS XA

SANS XA COMPLIANCE WORKSPACE

This page provides a live prescriptive-style checker for the envelope items that can be automated quickly. It compares your inputs against editable benchmark thresholds and keeps the roof, glazing, and hot-water checks live.

Benchmarks are prefilled from publicly available SANS XA guidance and project examples. Confirm final values against the submitted plan tables and the applicable edition of the standard.

Compliance route Prescriptive check

Overall status Awaiting inputs

Pass rate 0%

Pass balance 0 / 0

Project Data

Occupancy

Climate zone note

Net floor area (m2)

Roof area (m2)

External wall area (m2)

Total glazing area (m2)

North glazing area (m2)

Storeys

Assembly Values

Roof total R-value

Wall total R-value

Window U-value

Window SHGC

Shading factor

Annual hot-water load (kWh)

Non-resistance hot-water share (%)

Air leakage note

Benchmark Targets

Min roof R-value

Min wall R-value

Max glazing ratio (%)

Min non-resistance hot water (%)

Max window U-value

Max SHGC

Max north glazing ratio (%)

Glazing conductance factor

Glazing ratio 0%

North glazing ratio 0%

Roof reserve 0.00 m2K/W

Solar gain index 0.00

Wall reserve 0.00 m2K/W

Roof factor 0.00x

Wall factor 0.00x

Storeys 1

Hot-water split 0 / 0 kWh

Hot water compliance 0 / 0 kWh

Automated Checks

Envelope Snapshot

What this checks automatically

Roof and wall resistance, glazing ratio, north-facing glazing ratio, hot-water contribution, and a quick glazing conductance and SHGC comparison.

Project review items

Final plan approval, exact climate-zone tables, storey-specific conductance limits, and any rational assessment route that replaces the prescriptive checks.

Standards basis

Prescriptive values are aligned to public SANS 10400-XA guidance and common plan-review outputs. The page keeps the assumptions editable so the final project tables can replace them where needed.

Hot water At least 50% of annual average hot water demand should be met by non-resistance means.

Roof / ceiling Zone-based roof resistance is benchmarked from the public guidance set and prefilled at 3.7 for the zone preset.

Fenestration Glazing ratio, U-value, SHGC, and north-facing glazing stay editable because they vary by building type and route.