Project
Quotation details
user set — 1.5 is a placeholder
Markup % per bucket
Costing assumptions
AS 2634-1983 / BS EN 13121 — pending manufacturer data
AS 2634-1983 Table 3.1 — the minimum wall for that DN
the flat wall when the basis is the default; the alternative is the AS 2634-1983 Table 3.1 minimum
a longer straight run is split into spools
SS316 A4 — editable; 15 USD/kg default (no vendor price in this project)
on the GRP component cost
fallback where the vendor table gives no rate
fraction of the base subtotal (0.35 = 35 %)
fraction of the base subtotal (0.20 = 20 %)
fraction of the base subtotal (0.10 = 10 %)
fraction of the base subtotal (0.10 = 10 %)
lump sum
Advanced
used only where AS 2634 Table 3.1 does not tabulate the DN
R = k·DN — AS 2634-1983 gives no bend radius factor
branch DN = factor × DN where not stated
Components
Supports
Support parameters
HDG — AS 4100 (steel) | AS 4680 (HDG)
used where the source does not state the count
ground to the underside of the duct
engineering default
TZME rev0 20260920
on the HDG base rate
Advanced
saddle under the duct — the top is at the soffit
Anchors — AS 4673 (SS316)
HDG coating to AS 4680, 85 µm min — weld to AS 1554.1 — structural steel sections to AS 4100