# \#building-lca **URL:** https://community.oneclicklca.com/tag/building-lca/11.md [Latest](https://community.oneclicklca.com/latest.md) · [Categories](https://community.oneclicklca.com/categories.md) · [Tags](https://community.oneclicklca.com/tags.md) --- ## [Carbon Experts Summit Online on Nov 18](https://community.oneclicklca.com/t/carbon-experts-summit-online-on-nov-18/3164)
**Author:** [@Asha](https://community.oneclicklca.com/u/Asha)\ **Replies:** 0\ **Last updated:** [October 15, 2026, 2:02pm UTC](https://community.oneclicklca.com/t/carbon-experts-summit-online-on-nov-18/3164 "2026-10-15T14:02:54Z")
How does Daikin Europe use EPDs to drive product development & guide customers in making informed choices about decarbonization strategies? How does Arcadis connect sustainability data across teams and geographies? Hea… --- ## [Adding my concrete mix design](https://community.oneclicklca.com/t/adding-my-concrete-mix-design/3161)
**Author:** [@Amgad\_Khattab](https://community.oneclicklca.com/u/Amgad_Khattab)\ **Replies:** 0\ **Last updated:** [October 11, 2026, 1:08pm UTC](https://community.oneclicklca.com/t/adding-my-concrete-mix-design/3161 "2026-10-11T13:08:00Z")
My concrete mix design is as follow, Cement: 370 kg CEM I (local production) Micro silica: 30 kg (local production) Water: 155 kg Coarse aggregate: 590 kg + 490 kg, crushed limestone. i can not find the silica fume p… --- ## [PV energy input into LCA](https://community.oneclicklca.com/t/pv-energy-input-into-lca/3080)
**Author:** [@Josef\_Clough](https://community.oneclicklca.com/u/Josef_Clough)\ **Replies:** 1\ **Last updated:** [August 3, 2026, 10:27am UTC](https://community.oneclicklca.com/t/pv-energy-input-into-lca/3080 "2026-08-03T10:27:55Z")
In the energy consumption tab on OneClick what is the figure I put if there is PV? I have a building that will use 421116 kWh. It will also generate 284800 kWh of electricity from PV. Therefore is the figure for energy c… --- ## [Construction LCA bootcamp Certification](https://community.oneclicklca.com/t/construction-lca-bootcamp-certification/2964)
**Author:** [@Nikhil\_Mohanan](https://community.oneclicklca.com/u/Nikhil_Mohanan)\ **Replies:** 9\ **Last updated:** [April 27, 2026, 1:57pm UTC](https://community.oneclicklca.com/t/construction-lca-bootcamp-certification/2964 "2026-04-27T13:57:52Z")
Hello, I finished the exams and passed with 92% on 24.04.2026, but my certificate was not issued. i could not find anything in the ‘certificates’ section on ‘My account’ either. Could anyone help me with this?. --- ## [Are you ready for the revised EPBD?](https://community.oneclicklca.com/t/are-you-ready-for-the-revised-epbd/2924)
**Author:** [@Asha](https://community.oneclicklca.com/u/Asha)\ **Replies:** 0\ **Last updated:** [April 16, 2026, 8:21am UTC](https://community.oneclicklca.com/t/are-you-ready-for-the-revised-epbd/2924 "2026-04-16T08:21:11Z")
The revised EPBD brings a major shift for the building sector in Europe. For the first time, whole life carbon reporting will be mandatory: :black\_small\_square: 2028: new buildings over 1,000 m² :black\_small\_square: 2… --- ## [LCA in Autodesk Revit - issue getting results](https://community.oneclicklca.com/t/lca-in-autodesk-revit-issue-getting-results/2896)
**Author:** [@Aaron\_Van\_Acker](https://community.oneclicklca.com/u/Aaron_Van_Acker)\ **Replies:** 3\ **Last updated:** [April 9, 2026, 7:02am UTC](https://community.oneclicklca.com/t/lca-in-autodesk-revit-issue-getting-results/2896 "2026-04-09T07:02:57Z")
Hi, I’m currently working on integrating my BIM model using the One Click LCA plugin in Revit. After following the online course, I chose to use the ‘LCA in Autodesk Revit’ option. However, when I’m trying to get result… --- ## [BBCA vs CML calculation of some biobased material are strange](https://community.oneclicklca.com/t/bbca-vs-cml-calculation-of-some-biobased-material-are-strange/2873)
**Author:** [@Nicolas\_TERZIAN](https://community.oneclicklca.com/u/Nicolas_TERZIAN)\ **Replies:** 3\ **Last updated:** [March 24, 2026, 4:02pm UTC](https://community.oneclicklca.com/t/bbca-vs-cml-calculation-of-some-biobased-material-are-strange/2873 "2026-03-24T16:02:21Z")
Hi, I’ve a question about some results of BBCA calculation tool (french method “carbon energy”). I don’t understand why certain bio-based materials, calculated using the BBCA method – which is supposed to subtract bioge… --- ## [Operational energy](https://community.oneclicklca.com/t/operational-energy/2818)
**Author:** [@Shivani\_Kothari](https://community.oneclicklca.com/u/Shivani_Kothari)\ **Replies:** 1\ **Last updated:** [March 6, 2026, 7:48am UTC](https://community.oneclicklca.com/t/operational-energy/2818 "2026-03-06T07:48:35Z")
I am working on resi-led mixed development. There is a commercial unit on the ground floor which is 1/10th the size of the residential development above. There are PVs installed on the roof of the development which will … --- ## [LEED v4.1 BD+C | MR credit Building Life-Cycle Impact Reduction](https://community.oneclicklca.com/t/leed-v4-1-bd-c-mr-credit-building-life-cycle-impact-reduction/1408)
**Author:** [@jcmduarte](https://community.oneclicklca.com/u/jcmduarte)\ **Replies:** 7\ **Last updated:** [February 20, 2026, 11:51am UTC](https://community.oneclicklca.com/t/leed-v4-1-bd-c-mr-credit-building-life-cycle-impact-reduction/1408 "2026-02-20T11:51:41Z")
Hello everyone, I’m exploring the Whole-Building Life-Cycle Assessment (WBLCA) methodologies defined by the LEED and Level(s) frameworks, and I’m curious about understanding the specific differences in the scope and cal… --- ## [How do you integrate sustainability early enough to win work — without slowing delivery?](https://community.oneclicklca.com/t/how-do-you-integrate-sustainability-early-enough-to-win-work-without-slowing-delivery/2806)
**Author:** [@Asha](https://community.oneclicklca.com/u/Asha)\ **Replies:** 0\ **Last updated:** [February 19, 2026, 10:18am UTC](https://community.oneclicklca.com/t/how-do-you-integrate-sustainability-early-enough-to-win-work-without-slowing-delivery/2806 "2026-02-19T10:18:19Z")
On March 11, join One Click LCA’s live product release and see how AEC and manufacturing teams use sustainability data earlier in projects — where it actually affects outcomes. You’ll also hear how AECOM and other organ… --- ## [Carbon Designer - Building Type classification for Data Centers](https://community.oneclicklca.com/t/carbon-designer-building-type-classification-for-data-centers/2792)
**Author:** [@Carmen\_Evans](https://community.oneclicklca.com/u/Carmen_Evans)\ **Replies:** 4\ **Last updated:** [February 10, 2026, 2:12pm UTC](https://community.oneclicklca.com/t/carbon-designer-building-type-classification-for-data-centers/2792 "2026-02-10T14:12:31Z")
Hello, I am trying to use Carbon Designer to create a baseline for a data center. However, the building type section does not include this building type. Which would building type appropriate for an accurate comparison? --- ## [IES-VE → 1-Click LCA: mismatch in external envelope quantities and layer take-off (retrofit + Passivhaus projects)](https://community.oneclicklca.com/t/ies-ve-1-click-lca-mismatch-in-external-envelope-quantities-and-layer-take-off-retrofit-passivhaus-projects/2725)
**Author:** [@Harshul\_Singhal](https://community.oneclicklca.com/u/Harshul_Singhal)\ **Replies:** 1\ **Last updated:** [January 8, 2026, 1:47pm UTC](https://community.oneclicklca.com/t/ies-ve-1-click-lca-mismatch-in-external-envelope-quantities-and-layer-take-off-retrofit-passivhaus-projects/2725 "2026-01-08T13:47:19Z")
I am using IES-VE (ApacheSim / ModelIT) for operational energy modelling and 1-Click LCA for whole-life carbon assessment in line with RICS WLC v2. I am working on UK residential Passivhaus / EnerPHit case studies, inclu… --- ## [Unable to check shared project](https://community.oneclicklca.com/t/unable-to-check-shared-project/2673)
**Author:** [@sungbok](https://community.oneclicklca.com/u/sungbok)\ **Replies:** 1\ **Last updated:** [December 10, 2025, 8:50am UTC](https://community.oneclicklca.com/t/unable-to-check-shared-project/2673 "2025-12-10T08:50:28Z")
Hi, We have two companies to calculate Co2e with OneClickLCA and they shared their data with us. We are also using OneClickLCA and our license type is Designer. I can open their project but the detalied calculation is… --- ## [There is no "Import" button available. Instead a "Next" button appears at the top right corner and nothing happens when you click it](https://community.oneclicklca.com/t/there-is-no-import-button-available-instead-a-next-button-appears-at-the-top-right-corner-and-nothing-happens-when-you-click-it/2671)
**Author:** [@Sebastian\_Theissen](https://community.oneclicklca.com/u/Sebastian_Theissen)\ **Replies:** 1\ **Last updated:** [December 8, 2025, 11:47am UTC](https://community.oneclicklca.com/t/there-is-no-import-button-available-instead-a-next-button-appears-at-the-top-right-corner-and-nothing-happens-when-you-click-it/2671 "2025-12-08T11:47:13Z")
Hey, I wanted to test the ifc upload and one issue appeared. Instead of “Import” there is only a “Next” button in the top right corner (as shown in the following screenshot). When you click it, nothing happens. How can… --- ## [How to report electricity generated on-site](https://community.oneclicklca.com/t/how-to-report-electricity-generated-on-site/872)
**Author:** [@Bernadette](https://community.oneclicklca.com/u/Bernadette)\ **Replies:** 3\ **Last updated:** [November 6, 2025, 11:52am UTC](https://community.oneclicklca.com/t/how-to-report-electricity-generated-on-site/872 "2025-11-06T11:52:26Z")
Several clients asked me how to correctly input electricity generated on-site by e.g. a PV during the past week. I want to reshare this here as general guidance. First, please note the software understands all inputs on… --- ## [Join free, live online training & product release](https://community.oneclicklca.com/t/join-free-live-online-training-product-release/2440)
**Author:** [@Asha](https://community.oneclicklca.com/u/Asha)\ **Replies:** 0\ **Last updated:** [October 7, 2025, 7:25am UTC](https://community.oneclicklca.com/t/join-free-live-online-training-product-release/2440 "2025-10-07T07:25:40Z")
Discover AI tools for EPBD, CPR & CBAM compliance. As EPBD, CPR (for selected product categories), and CBAM roll out progressively, carbon disclosure becomes mandatory for permits and market access. LEED v5, BREEAM v7, a… --- ## [Revit plugin not loading results](https://community.oneclicklca.com/t/revit-plugin-not-loading-results/1775)
**Author:** [@palynya3120](https://community.oneclicklca.com/u/palynya3120)\ **Replies:** 58\ **Last updated:** [September 30, 2025, 6:07am UTC](https://community.oneclicklca.com/t/revit-plugin-not-loading-results/1775 "2025-09-30T06:07:28Z")
Hello! I am trying to go through my trial LCA analysis for a building in Revit plugin and running into next error trying to load the results. the error is the next one: An error ocurred. Please repair your installatio… --- ## [By 2026, carbon compliance is no longer optional. Are you ready?](https://community.oneclicklca.com/t/by-2026-carbon-compliance-is-no-longer-optional-are-you-ready/2393)
**Author:** [@Asha](https://community.oneclicklca.com/u/Asha)\ **Replies:** 0\ **Last updated:** [September 11, 2025, 11:57am UTC](https://community.oneclicklca.com/t/by-2026-carbon-compliance-is-no-longer-optional-are-you-ready/2393 "2025-09-11T11:57:26Z")
New regulations are reshaping access to projects and markets. The EU’s Energy Performance of Buildings Directive (EPBD), Construction Products Regulation (CPR), and Carbon Border Adjustment Mechanism (CBAM) — together w… --- ## [2026 Saint-Gobain Architecture Student Contest](https://community.oneclicklca.com/t/2026-saint-gobain-architecture-student-contest/1649)
**Author:** [@Maija](https://community.oneclicklca.com/u/Maija)\ **Replies:** 0\ **Last updated:** [October 1, 2024, 6:49am UTC](https://community.oneclicklca.com/t/2026-saint-gobain-architecture-student-contest/1649 "2024-10-01T06:49:08Z")
Welcome to the community page for the Saint-Gobain ASC of 2026! This topic is dedicated to asking questions related to using One Click LCA to conduct your building LCAs, and also interact with fellow participants. You c… --- ## [Clarification on Uniform Efficiency Multiplier (1.18) Across Multiple Countries in Localised Electricity Profiles](https://community.oneclicklca.com/t/clarification-on-uniform-efficiency-multiplier-1-18-across-multiple-countries-in-localised-electricity-profiles/2319)
**Author:** [@mojtaba\_saadein\_khor](https://community.oneclicklca.com/u/mojtaba_saadein_khor)\ **Replies:** 2\ **Last updated:** [August 16, 2025, 4:15am UTC](https://community.oneclicklca.com/t/clarification-on-uniform-efficiency-multiplier-1-18-across-multiple-countries-in-localised-electricity-profiles/2319 "2025-08-16T04:15:33Z")
Dear One Click LCA Support Team, Support Team @Steven , @Shaun , @Asha , I hope you’re all doing well. I’m writing to kindly follow up and seek clarification on the Efficiency Multiplier (1.18) shown in the localised… --- ## [Construction waste in EN 15804 + A2 and Oneclick](https://community.oneclicklca.com/t/construction-waste-in-en-15804-a2-and-oneclick/2339)
**Author:** [@Matea\_Flegar](https://community.oneclicklca.com/u/Matea_Flegar)\ **Replies:** 1\ **Last updated:** [August 13, 2025, 6:46am UTC](https://community.oneclicklca.com/t/construction-waste-in-en-15804-a2-and-oneclick/2339 "2025-08-13T06:46:05Z")
Hi, I’m doing a case study LCA of a building renovation project. In the A1 version of the Levels norm there was an option to include generated construction waste which can not be found in the new version. Why is that? T… --- ## [Mapping of Archicad objects](https://community.oneclicklca.com/t/mapping-of-archicad-objects/2326)
**Author:** [@sungbok](https://community.oneclicklca.com/u/sungbok)\ **Replies:** 3\ **Last updated:** [August 12, 2025, 11:30am UTC](https://community.oneclicklca.com/t/mapping-of-archicad-objects/2326 "2025-08-12T11:30:09Z")
Hi! I am a archicad user from Finland and have a mapping problem when BIM objects sent to OneClickLCA. It would be good to have some help from in this community. Problem is that certain materals of Archicad are ass… --- ## [One Click LCA & RICS PS V2: Discrepancy with C1-C4 Sequestered Carbon](https://community.oneclicklca.com/t/one-click-lca-rics-ps-v2-discrepancy-with-c1-c4-sequestered-carbon/2332)
**Author:** [@Lewis\_Ingham](https://community.oneclicklca.com/u/Lewis_Ingham)\ **Replies:** 3\ **Last updated:** [August 5, 2025, 1:58pm UTC](https://community.oneclicklca.com/t/one-click-lca-rics-ps-v2-discrepancy-with-c1-c4-sequestered-carbon/2332 "2025-08-05T13:58:03Z")
Hi all, I’m having trouble aligning the One Click LCA output (with RICS PS V2 settings) with RICS V2 reporting requirements, specifically regarding how sequestered carbon is handled in the C1-C4 modules. Issue: When u… --- ## [LCA across multiple ifc files](https://community.oneclicklca.com/t/lca-across-multiple-ifc-files/2328)
**Author:** [@Bo\_Pan](https://community.oneclicklca.com/u/Bo_Pan)\ **Replies:** 1\ **Last updated:** [August 5, 2025, 6:58am UTC](https://community.oneclicklca.com/t/lca-across-multiple-ifc-files/2328 "2025-08-05T06:58:11Z")
While using OneClick for LCA calculations, I encountered a limitation I’d like to bring to your attention. In all integration options (OneClick for Autodesk Construction Cloud, IFC Viewer, and OneClick Revit), calculatio… --- ## [Wood: reuse vs landfill same results](https://community.oneclicklca.com/t/wood-reuse-vs-landfill-same-results/2272)
**Author:** [@l.gandaglia](https://community.oneclicklca.com/u/l.gandaglia)\ **Replies:** 1\ **Last updated:** [July 15, 2025, 1:45pm UTC](https://community.oneclicklca.com/t/wood-reuse-vs-landfill-same-results/2272 "2025-07-15T13:45:11Z")
Hello, i am comparing the results of a structure made of wood. I am surprised looking at the results. Scenario 0 envisions the wood incineration Scenario 1 envisions the reuse of wood as material Scenario 2 envision… --- ## [Using EN 15804:2012+A2 EPD for LEED v4.1 BD+C | MR credit Building Life-Cycle Impact Reduction](https://community.oneclicklca.com/t/using-en-15804-2012-a2-epd-for-leed-v4-1-bd-c-mr-credit-building-life-cycle-impact-reduction/2162)
**Author:** [@Chandu\_Sai\_Tarun](https://community.oneclicklca.com/u/Chandu_Sai_Tarun)\ **Replies:** 1\ **Last updated:** [May 7, 2025, 6:38am UTC](https://community.oneclicklca.com/t/using-en-15804-2012-a2-epd-for-leed-v4-1-bd-c-mr-credit-building-life-cycle-impact-reduction/2162 "2025-05-07T06:38:37Z")
I am unable to add an EPD made in accordance with EN 15804:2012+A2 in a project modelled using LCA for LEED, International (CML) tool. Can someone help me with understanding where this reform is coming from ? Does USGBC … --- ## [Building GWP benchmark in Europe?](https://community.oneclicklca.com/t/building-gwp-benchmark-in-europe/2138)
**Author:** [@Jamie\_Casciotta](https://community.oneclicklca.com/u/Jamie_Casciotta)\ **Replies:** 1\ **Last updated:** [April 24, 2025, 8:19am UTC](https://community.oneclicklca.com/t/building-gwp-benchmark-in-europe/2138 "2025-04-24T08:19:06Z")
Given that OneClick LCA’s CArbon Heroes is based on the database of LCA projects done over time, are there any European-wide benchmarks that can be taken as a reference? Also, is there any data to benchmark the GWP of c… --- ## [Building LCA via OpenLCA](https://community.oneclicklca.com/t/building-lca-via-openlca/2136)
**Author:** [@Abdelrahman\_Mostafa](https://community.oneclicklca.com/u/Abdelrahman_Mostafa)\ **Replies:** 1\ **Last updated:** [April 23, 2025, 4:01pm UTC](https://community.oneclicklca.com/t/building-lca-via-openlca/2136 "2025-04-23T16:01:21Z")
Do you think, or did anyone dry to model LCA for building using OpenLCA --- ## [The plugin is not working](https://community.oneclicklca.com/t/the-plugin-is-not-working/1968)
**Author:** [@mohamadhamed](https://community.oneclicklca.com/u/mohamadhamed)\ **Replies:** 3\ **Last updated:** [March 21, 2025, 1:22pm UTC](https://community.oneclicklca.com/t/the-plugin-is-not-working/1968 "2025-03-21T13:22:51Z")
What is the cause of the following error? Error in reading the file: java.lang.NullPointerException: Cannot get property ‘postFile’ on null object --- ## [LCA calculations](https://community.oneclicklca.com/t/lca-calculations/2036)
**Author:** [@John\_Ola\_Myklebust](https://community.oneclicklca.com/u/John_Ola_Myklebust)\ **Replies:** 3\ **Last updated:** [March 17, 2025, 11:20am UTC](https://community.oneclicklca.com/t/lca-calculations/2036 "2025-03-17T11:20:30Z")
I want to test LCA plugging for Revit, and get this error code when I try to load results 58252. I would like a price on what licenses cost if I find this interesting. Must first test it out and need help to fix the erro… [Next page](https://community.oneclicklca.com/tag/building-lca/11.md?match_all_tags=true&page=1&tags%5B%5D=building-lca)