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On-site factories to support lean principles and industrialized construction

Anton Rosarius
Anton Rosarius
 y 
Borja García de Soto
Borja García de Soto
   | 21 mar 2021
Organization, Technology and Management in Construction: an International Journal's Cover Image
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Article Category: Research Article
Publicado en línea: 21 mar 2021
Páginas: 2353 - 2366
Recibido: 31 may 2020
Aceptado: 12 ene 2021
DOI: https://doi.org/10.2478/otmcj-2021-0004
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© 2021 Anton Rosarius et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Fig. 1

Mobile Battery Mold in its closed (left) and open state (right) (Weckenmann, n.d.).
Mobile Battery Mold in its closed (left) and open state (right) (Weckenmann, n.d.).

Fig. 2

Process map showing the implementation of CYCLONE into the ALD.
Process map showing the implementation of CYCLONE into the ALD.

Fig. 3

General logical layout for a MgO SIP panel.
General logical layout for a MgO SIP panel.

Fig. 4

Expanded “produce MgO panel” process.
Expanded “produce MgO panel” process.

Fig. 5

Required number of workstations depending on customer takt time.
Required number of workstations depending on customer takt time.

Fig. 6

3D model of AL-1 consisting of a single assembly line with a low-mid level of automation.
3D model of AL-1 consisting of a single assembly line with a low-mid level of automation.

Task times obtained from video analysis and corresponding range of possible values

Task ID Task Name te [s] max–min [%] te max [s] te min [s]
1 Place first MgO board (1) 15 15 17.25 12.75
2 Place second MgO board (1) 30 15 34.5 25.5
3 Place first MgO board (2) 15 15 17.25 12.75
4 Place second MgO board (2) 30 15 34.5 25.5
5 Place insulation material (1) 20 15 23 17
6 Place insulation material (2) 20 15 23 17
7 Spray glue on MgO board (1) 20 0 20 20
8 Spray glue on MgO board (2) 20 0 20 20
9 Spray glue on insulation material (1) 20 0 20 20
10 Spray glue on insulation material (2) 20 0 20 20
11 Compress (1) 30 0 30 30
12 Compress (2) 30 0 30 30
13 Prepare timber frame 60 25 75 45
14 Add timber frame 30 25 37.5 22.5
TOTAL 360 402 318

Information related to each assembly line (AL) used for simulation

AL-1 AL-2.1 AL-2.2 AL-3.1 AL-3.2
Distribution of tasks for each workstation (WS) (see Table 1 for Task IDs) 1WS 1: all 2WS 1: 1–12WS 2: 13,14 2WS 1: 1–10WS 2: 11–14 3WS 1: 1,3,5–10WS 2: 2,4,11–12WS 3: 13,14 3WS 1: 1,2,5,7,9,11WS 2: 3,4,6,8,10,12WS 3: 13,14
Capital cost (USD) 10.700 10.700 10.700 11.500 19.400
Labor cost (USD/hr) 100 200 200 300 300
Workers 2 4 4 6 6
Avg. cycle time (s) 368 281 210 187 141
Space required (mounted state*) (m2) 91.6 91.6 91.6 107.6 107.6
Space req. (unmounted state) (m2) 27.1 27.1 27.1 32.0 43.7
Total weight (tons) 2.0 2.0 2.0 2,2 3.4
Total WS utilization 100% 66.6% 89.5% 80.7% 88.7%
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