Expert Q&A

University of Luxembourg Wins constructsteel 2024 Innovation Award for Pioneering Steel-to-Timber Connectors

At the 2024 constructsteel conference, the University of Luxembourg received the Innovation of the Year Award for its development of steel-to-timber shear connectors—a key enabler for demountable, reusable steel-timber composite flooring systems. These innovative connectors support the transition to circular construction by facilitating disassembly and reassembly without compromising structural performance. We spoke with Professor Christoph Odenbreit to learn more about the research and its implications for the future of sustainable construction.

Project story

Taipei 101, Taiwan's tallest skyscraper

How steel helps Taiwan’s tallest building, Taipei 101, survive earthquakes

A combination of a structural system equipped with steel outrigger trusses and a central braced core, eight concrete-filled steel box mega columns, composite floors with reduced section steel beams and a steel sphere tuned mass damper helped Taipei 101, survive Taiwan’s fiercest earthquake in 25 years.

 

Technical trends

Flexible work’s enduring appeal affects workers, employers, and real estate

Flexible work models are reshaping the future of work and living, with profound implications for the engineering, construction, and materials sectors. As workers now commute to offices 30% less frequently than before the pandemic, demand is shifting toward suburban mixed-use developments, residential spaces with home-office setups, and sustainable, tech-enabled office buildings designed for collaboration and well-being. This shift also highlights opportunities to repurpose underutilised urban office spaces into residential or community-focused facilities. Companies that embrace these trends—prioritising flexibility, sustainability, and innovation—can play a pivotal role in shaping the next generation of workspaces and communities.

Awards 2025

constructsteel Awards: 2025 nominations open until May 30!

Nominations for the 2025 constructsteel Awards are open until May 30, recognising Best Project of the Year, Innovation of the Year, and Excellence in Sustainability. Learn more about the award categories, judging criteria, and online nomination forms.

Construction market trends

United States

X Values Permits (LHS, SAAR Millions) Output (RHS, SAAR USD Millions)
Jan-19 1.261 516545
Feb-19 1.287 516241
Mar-19 1.305 517830
Apr-19 1.311 523135
May-19 1.347 529067
Jun-19 1.315 541113
Jul-19 1.352 552933
Aug-19 1.489 559944
Sep-19 1.474 563875
Oct-19 1.525 567630
Nov-19 1.527 580119
Dec-19 1.451 586635
Jan-20 1.507 596241
Feb-20 1.442 606421
Mar-20 1.358 615959
Apr-20 1.066 596264
May-20 1.26 584502
Jun-20 1.338 590679
Jul-20 1.546 611092
Aug-20 1.529 641265
Sep-20 1.624 663219
Oct-20 1.613 684421
Nov-20 1.714 702989
Dec-20 1.744 725893
Jan-21 1.883 744621
Feb-21 1.715 737306
Mar-21 1.732 755629
Apr-21 1.738 769180
May-21 1.681 781138
Jun-21 1.657 792046
Jul-21 1.652 807694
Aug-21 1.77 811116
Sep-21 1.625 821300
Oct-21 1.719 830846
Nov-21 1.766 855289
Dec-21 1.913 884297
Jan-22 1.915 912064
Feb-22 1.86 937491
Mar-22 1.879 956267
Apr-22 1.835 970813
May-22 1.712 980391
Jun-22 1.745 955849
Jul-22 1.719 930578
Aug-22 1.542 914591
Sep-22 1.613 896797
Oct-22 1.56 884161
Nov-22 1.402 869624
Dec-22 1.4 859697
Jan-23 1.443 855073
Feb-23 1.62 847449
Mar-23 1.493 847144
Apr-23 1.47 844688
May-23 1.532 861971
Jun-23 1.493 864826
Jul-23 1.501 874187
Aug-23 1.578 876578
Sep-23 1.515 877629
Oct-23 1.534 877566
Nov-23 1.508 879069
Dec-23 1.53 886430
Jan-24 1.508 904235
Feb-24 1.563 914102
Mar-24 1.485 911890
Apr-24 1.44 937484
May-24 1.399 941231
Jun-24 1.454 912102
Jul-24 1.406 909800
Aug-24 1.470 923515
Sep-24 1.425 892268
Oct-24 1.419 922406
Nov-24 1.493 924903
Dec-24 1.482 927867
Jan-25 1.473 929814
Feb-25 1.459 941676
Mar-25 1.467 937668

U.S. construction spending falls in March – high mortgage rates and tariffs on imported goods are constraining homebuilding.

Private residential output down -0.4% m-o-m (2.8% y-o-y); Building permits up 0.5% m-o-m (-1.2% y-o-y).

Private non-residential output down -0.8% m-o-m (1.6% y-o-y). Architecture Billings Index (ABI) down to 44.1 in March from 45.5 in February (< 50, contraction).

China

Jan-19 -1.90
Feb-19 -0.86
Mar-19 -1.40
Apr-19 -0.25
May-19 -1.27
Jun-19 -2.33
Jul-19 -2.30
Aug-19 0.58
Sep-19 2.90
Oct-19 3.11
Nov-19 2.01
Dec-19 0.07
Jan-20 -6.38
Feb-20 -15.49
Mar-20 -28.55
Apr-20 -19.28
May-20 -8.53
Jun-20 3.19
Jul-20 6.34
Aug-20 7.45
Sep-20 9.85
Oct-20 11.68
Nov-20 11.25
Dec-20 12.67
Jan-21 20.60
Feb-21 35.73
Mar-21 36.64
Apr-21 22.52
May-21 10.58
Jun-21 10.97
Jul-21 3.39
Aug-21 -3.96
Sep-21 -12.52
Oct-21 -16.65
Nov-21 -16.07
Dec-21 -16.80
Jan-22 -14.05
Feb-22 -13.16
Mar-22 -13.78
Apr-22 -23.32
May-22 -28.53
Jun-22 -28.03
Jul-22 -25.19
Aug-22 -22.29
Sep-22 -22.06
Oct-22 -20.27
Nov-22 -24.08
Dec-22 -29.91
Jan-23 -27.17
Feb-23 -19.69
Mar-23 -3.54
Apr-23 -5.79
May-23 -10.64
Jun-23 -21.93
Jul-23 -24.69
Aug-23 -25.96
Sep-23 -22.18
Oct-23 -21.17
Nov-23 -20.38
Dec-23 -21.75
Jan-24 -22.91
Feb-24 -23.97
Mar-24 -24.30
Apr-24 -21.62
May-24 -19.27
Jun-24 -14.61
Jul-24 -13.93
Aug-24 -12.90
Sep-24 -11.56
Oct-24 -8.59
Nov-24 -3.93
Dec-24 0.64
Jan-25 -0.05
Feb-25 -2.58
Mar-25 -3.52

China’s real estate sector continues to stabilise due to policies prioritising risk prevention, urban renewal, and high-quality housing supply for sustainable growth.

The 3-month moving average y-o-y decline in floor space started reached -24.8% in March; floor space sold was down -3.5% y-o-y.

Europe

X-values PMI (LHS) Output (RHS, %, y-o-y)
Jan-19 50.6 0.00
Feb-19 52.6 5.71
Mar-19 52.2 6.25
Apr-19 52.1 2.78
May-19 50.6 2.59
Jun-19 50.8 1.48
Jul-19 50.6 1.18
Aug-19 49.1 0.59
Sep-19 50.5 0.49
Oct-19 50.7 0.69
Nov-19 50.6 0.69
Dec-19 51.3 -1.64
Jan-20 51.9 4.38
Feb-20 52.5 -0.39
Mar-20 33.5 -16.30
Apr-20 15.1 -31.30
May-20 39.5 -12.06
Jun-20 48.3 -5.34
Jul-20 48.9 -4.37
Aug-20 47.8 -1.37
Sep-20 47.5 -3.69
Oct-20 44.9 -3.32
Nov-20 45.6 -2.14
Dec-20 45.5 0.00
Jan-21 44.1 -6.10
Feb-21 45.0 -7.07
Mar-21 50.1 16.24
Apr-21 50.1 41.21
May-21 50.3 10.95
Jun-21 50.3 3.18
Jul-21 49.8 1.42
Aug-21 49.5 -1.48
Sep-21 50 1.71
Oct-21 51.2 2.22
Nov-21 53.3 0.80
Dec-21 52.9 -1.76
Jan-22 56.6 4.26
Feb-22 56.3 7.40
Mar-22 52.8 2.28
Apr-22 50.4 1.99
May-22 49.2 2.29
Jun-22 47 1.69
Jul-22 45.7 1.20
Aug-22 44.2 2.51
Sep-22 45.3 0.50
Oct-22 44.9 0.99
Nov-22 43.6 1.28
Dec-22 42.6 0.00
Jan-23 46.1 0.78
Feb-23 47.6 1.84
Mar-23 45.0 0.39
Apr-23 45.2 1.27
May-23 44.6 1.75
Jun-23 44.2 1.66
Jul-23 43.5 3.27
Aug-23 43.4 1.96
Sep-23 43.6 2.66
Oct-23 42.7 1.27
Nov-23 43.4 0.58
Dec-23 43.6 2.99
Jan-24 41.3 0.58
Feb-24 42.9 -1.62
Mar-24 42.4 -0.48
Apr-24 41.9 -0.96
May-24 42.9 -2.39
Jun-24 41.8 -1.44
Jul-24 41.4 -2.30
Aug-24 41.4 -1.92
Sep-24 42.1 -2.30
Oct-24 43 -1.54
Nov-24 42.7 -0.19
Dec-24 42.9 0.00
Jan-25 45.4 -0.10
Feb-25 42.7 0.19
Mar-25 44.8
Apr-25 46

Eurozone construction in February declined sequentially for the first time since September 2024.

Eurozone construction down -0.5% m-o-m (0.2% y-o-y) in February; Buildings down -2.2% m-o-m (-3.3% y-o-y) in February; Civil engineering down -1.3% m-o-m (-3.5% y-o-y) in February.

The IHS Markit Eurozone Construction PMI up to 46 in April from 44.8 in March (< 50, contraction).

India

X Values Avg industrial production (y-o-y)
Jan-19 1.4
Feb-19 1.8
Mar-19 5.0
Apr-19 4.3
May-19 2.9
Jun-19 0.2
Jul-19 2.0
Aug-19 -0.7
Sep-19 -5.7
Oct-19 -5.4
Nov-19 0.3
Dec-19 0.9
Jan-20 1.4
Feb-20 5.1
Mar-20 -9.0
Apr-20 -44.4
May-20 -21.1
Jun-20 -12.1
Jul-20 -8.0
Aug-20 -7.5
Sep-20 -0.3
Oct-20 -1.8
Nov-20 -1.7
Dec-20 -0.3
Jan-21 0.7
Feb-21 -3.7
Mar-21 12.6
Apr-21 62.6
May-21 16.4
Jun-21 9.4
Jul-21 9.9
Aug-21 12.2
Sep-21 5.4
Oct-21 8.7
Nov-21 3.2
Dec-21 4.1
Jan-22 4.0
Feb-22 5.9
Mar-22 4.8
Apr-22 9.5
May-22 19.3
Jun-22 13.1
Jul-22 4.8
Aug-22 4.2
Sep-22 8.3
Oct-22 0.7
Nov-22 5.7
Dec-22 8.3
Jan-23 9.7
Feb-23 7.4
Mar-23 4.2
Apr-23 4.6
May-23 5.2
Jun-23 8.4
Jul-23 8.5
Aug-23 13.4
Sep-23 9.5
Oct-23 12.7
Nov-23 7.9
Dec-23 5.1
Jan-24 4.2
Feb-24 7.1
Mar-24 6.3
Apr-24 6.9
May-24 6.9
Jun-24 5.0
Jul-24 6.3
Aug-24 -1.5
Sep-24 2.4
Oct-24 3.8
Nov-24 5.8
Dec-24 5.1
Jan-25 5.1
Feb-25 3.4
Mar-25 3.8

India’s core sector continues to grow, supported by strong performance in cement, steel, and electricity.

The weighted average of eight core industries output up by 3.8 y-o-y in March; production of steel up 7.1%; cement up 11.6% y-o-y.


 

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