Longley Wide Floor Beam
A prestressed concrete beam for beam-and-block ground floors — the ordinary suspended floor of UK housebuilding, laid at centres to suit the span and infilled with blocks. Wide beam, 175 mm. Made by Longley Concrete Ltd, a trading entity within the Ibstock group. Its declaration puts production at 227 kgCO2e per tonne, and the interesting part is where that sits: almost all of it is A3 (209), the casting and steam-curing, rather than raw material supply — which is where a low-carbon binder would bite.
Carbon and evidence
Product Evidence
Evidence currently held for the Ibstock product record.
Recorded Carbon Result
A1–A3 GWP-total per tonne of beam (HUB-1638). The declaration is per 1 kg; this is an exact ×1000 conversion. A3 alone is 209 — casting and curing dominate, not raw materials.
Indicator: GWP-total
Longley Wide Floor Beam (HUB-1638)A1–A3 covers raw-material supply, transport to manufacture and manufacturing. It is product-stage information, not a whole-life result.
Environmental Product Declaration
EPD recorded- Coverage
- Specific product
- Declared unit
- 1 kg
- Programme
- EPD Hub
- Registration
- HUB-1638
- Standard
- EN 15804:2012+A2:2019, ISO 14025, ISO 21930
- Valid until
- 2029-07-05
- Verification
- Third-party verified
Wide beam, 175 mm, all lengths. Manufacturer of record: Longley Concrete Ltd, a trading entity within the Ibstock group.
Carbon profile
kgCO2e per 1 tonne of floor beam (declaration declares 1 kg; figures ×1000) · each bar starts at zero · local scale
A1-A3 product
227
A4-A5 site*
25.6
B use
—
C end of life
16
D reuse / recycling
-3.6
Reported GWP Modules
Displayed as stored; modules are not added together here.
A1–A3
227 kgCO₂e
per 1 tonne of floor beam (declaration declares 1 kg; figures ×1000)
A4*
9.87 kgCO₂e
per 1 tonne of floor beam (declaration declares 1 kg; figures ×1000)
A5*
15.7 kgCO₂e
per 1 tonne of floor beam (declaration declares 1 kg; figures ×1000)
C1
3.31 kgCO₂e
per 1 tonne of floor beam (declaration declares 1 kg; figures ×1000)
C2
4.69 kgCO₂e
per 1 tonne of floor beam (declaration declares 1 kg; figures ×1000)
C3
7.63 kgCO₂e
per 1 tonne of floor beam (declaration declares 1 kg; figures ×1000)
C4
0.39 kgCO₂e
per 1 tonne of floor beam (declaration declares 1 kg; figures ×1000)
D
-3.6 kgCO₂e
per 1 tonne of floor beam (declaration declares 1 kg; figures ×1000)
Upfront Carbon (A1–A5)*
253 kgCO₂e per 1 tonne of floor beam (declaration declares 1 kg; figures ×1000)
A1–A3 227 + A4 9.87 + A5 15.7 · GWP-total, as declared
Sourced Product Claims
- Third-party verified EPD, valid to 2029-07-05Third-party verifiedSource
Evidence Sources
Comparison Status
This result should be displayed for information only and not ranked against another product.
- • The EPD is not linked to an evidence source.
Design & Specification Notes
Qualitative notes for early design discussion. Not product-specific EPD evidence, and not a basis for numerical comparison.
A prestressed concrete beam for beam-and-block ground floors — the ordinary suspended floor of UK housebuilding, laid at centres to suit the span and infilled with blocks.
Typical Uses
- •Primary frame
- •Long-span elements
- •Load-bearing supports
Key Performance
High load-bearing capacity for primary frame.
Typical Service-Life Estimate
60 yearsGeneric estimate for early design discussion; confirm with the manufacturer.
Specification Actions
- •Specify GGBS/PFA cement replacement (target: 50%+ replacement).
- •Request EPD showing embodied carbon per m3.
- •Calculate transport distances for primary materials.
Indicative Health & Indoor Air
Specification
- Range
- Longley
- Finish
- Prestressed concrete floor beam — wide beam, 175 mm
- Country of manufacture
- United Kingdom