1 Introduction
2 Literature Review and Methodology Overview
2.1 Constructability
Author (year) | Content |
---|---|
Yoon and Kim (2014) | Analyzed factors affecting constructability and verified their impact on productivity |
Othman (2011) | Proposed an innovative framework to facilitate the integration of construction knowledge and builder experience at the design phase |
Park et al. (2010) | Proposed a design management process between design activities and constructability knowledge |
Lam et al. (2006) | Analyzed factors influencing constructability in the design phase through questionnaires |
Pulaski and Horman (2005) | Proposed a conceptual model for organizing constructability knowledge for design |
Fisher et al. (2000) | Proposed a constructability review process for the efficient use of analytical tools to improve constructability |
Fischer and Tatum (1997) | Classified the knowledge into construction methods and structural elements to ensure appropriate and specific constructability input |
2.2 Constructability Activities for Temporary Work
Category | Constructability activities | Regrouped activities | (Design stage) Subdivided activities |
---|---|---|---|
Structural methods and surveying | Access roads and pits for permanent measurement | Surveying | (SD) Comparison of alternatives |
Measurement method and sensor installation | (DD) Selection of surveying method and locations | ||
Zoning for concrete placement (i.e., construction joints) | Construction methods for structures | (DD) Comparison of alternatives | |
Rebar placing and splicing | (CD) Method selection and construction planning | ||
Formwork operation method | |||
Evacuation routes and spaces | Evacuation | (DD) Review of evacuation floors and routes | |
(CD) Selection of evacuation plan | |||
Core construction method | Core construction | (SD) Comparison of alternatives | |
(DD) Method selection | |||
Circulation for vertical lifting of resources by construction phase | Vertical transportation | (CD) Plan for resource transportation route | |
Facade protection during structural framework | Facade protection | (CD) Facade protection plan | |
Vertical transportation of resources | Switching to permanent elevator and platform design | Lifting equipment and concrete pumping | (DD) Comparison of alternatives |
Centralization of temporary systems for vertical transportation (temporary bridge, ramp, etc.) | |||
Location of lifting equipment considering finishing work | (CD) Selection of equipment and methods | ||
Concrete pumping method | |||
Other equipment for on-site material handling (gantry cranes, monorails, forklifts, trucks, etc.) | On-site material handling | (CD) Plan for material-handling machinery | |
Space zoning | Design of the temporary access control system and CCTV layout | Security and ventilation | (CD) Space zoning for security and ventilation systems |
Ventilation and dust reduction in working zones during internal finishing | |||
Separation between built and working zones | Separation between zones | (SD) Discussion about separation plan | |
(DD) Alternatives review | |||
(CD) Selection of optimal plan | |||
Water supply | Switching between temporary and main water tank according to water consumption | Water supply | (DD) Comparison of alternatives |
Switching between temporary and main septic tank according to sewage capacity | (CD) Selection of water supply plan | ||
Temporary facilities and services | Standardization and fire protection of the temporary facility | Temporary facilities | (CD) Review of standardization and fire protection |
Lighting to prevent collision (T/Cs, airplanes, etc.) | Electricity and lighting | (DD) Comparison of alternatives | |
Temporary electric power supply and distribution, and electric room | (CD) Selection of electric power supply and lighting plan |
2.3 Dependency Structure Matrix
3 Process for Integrating Constructability with Design Activities Based on the DSM
3.1 Construction Design Activities
Design stage | Design discipline | |||
---|---|---|---|---|
Architectural (A) | Structural (S) | M&E (M) | Fire/disaster prevention (F) | |
SD | Concept design Sketches/study models Preliminary building design Preliminary system design Preliminary cost estimate | Review of structural materials Comparison of structural systems | Preliminary load calculation Review of M&E systems | Preliminary load calculation Review of evacuation routes and fire-protection systems |
DD | Detail planning and initial design development Facility space check System design determination Design development drawings | Selection of structural materials Structural analysis and selection of preliminary structure | Preliminary capacity calculation and systems selection | Evacuation simulation and systems selection |
CD | Plan for detail drawings Partial detail drawings Review of standardizations Final drawings Final specifications Final cost estimate Documentation | Structural calculation sheet Structural drawings | Load/capacity calculation sheet for mechanical system Load/capacity calculation sheet for electrical system Partial detail drawings | Capacity calculation sheet Partial detail drawings |
3.2 Constructability Integration into the Design Phase
3.2.1 Dependency Relationship Analysis and DSM Application
Category | Discipline | Activity name | ID | Predecessors |
---|---|---|---|---|
Design activity | A | Concept design | 1 | – |
A | Sketches/study models | 2 | 1 | |
A | Preliminary building design | 3 | 1,2 | |
S | Review of structural materials | 4 | 3,34 | |
M | Preliminary load calculation for M&E system | 5 | 3 | |
F | Preliminary load calculation for fire-protection system | 6 | 3 | |
S | Comparison of structural systems | 7 | 3,4,10,35,36 | |
M | Review of M&E systems | 8 | 3,5 | |
F | Review of evacuation routes and fire-protection systems | 9 | 3,6 | |
A | Preliminary architectural system design | 10 | 3,7,8,9 | |
A | Preliminary cost estimate | 11 | 7,8,9,10,34 | |
A | Detail planning and initial design development | 12 | 10,11 | |
S | Selection of structural materials | 13 | 4,12 | |
A | Facility space check | 14 | 7,8,9,12,36,37 | |
A | System design determination | 15 | 10,12,13,14,41 | |
S | Structural analysis and selection of preliminary structure | 16 | 7,13,15,17,18,37,38,39,40 | |
M | Preliminary capacity calculation and M&E systems selection | 17 | 5,8,14,15,42,43 | |
F | Evacuation simulation and fire-protection systems selection | 18 | 6,9,14,15,44 | |
A | Design development drawings | 19 | 3,12,15,16,41 | |
A | Plan for detail drawings | 20 | 19 | |
F | Capacity calculation sheet for fire-protection system | 21 | 18,20,51,53 | |
M | Load/capacity calculation sheet for mechanical system | 22 | 8,17,20,45,50 | |
M | Load/capacity calculation sheet for electrical system | 23 | 8,17,20,46,50 | |
S | Structural calculation sheet | 24 | 16,20,47 | |
A | Partial detail drawings | 25 | 19,20,47,48 | |
S | Structural drawings | 26 | 16,19,24,25,47,52 | |
M | Partial detail drawings for M&E system | 27 | 17,19,22,23,45,46,50 | |
F | Partial detail drawings for fire-protection system | 28 | 18,19,20,21,51 | |
A | Review of standardizations | 29 | 25,26,27,28,53 | |
A | Final drawings | 30 | 26,27,28 | |
A | Final specifications | 31 | 29,30,55 | |
A | Final cost estimate | 32 | 29,30,54,55 | |
A | Documentation | 33 | 30,32 | |
Constructability activity | A | Discussions about separation plan | 34 | 3,4 |
S | Comparison of alternatives for core construction | 35 | 3,4 | |
S | Comparison of surveying plans | 36 | 3,4,35 | |
S | Selection of core construction method | 37 | 12,13,35 | |
S | Comparison of alternatives for structural framework | 38 | 12,13,37,39 | |
A | Comparison of lifting equipment and pumping plans | 39 | 12,13,14,37,38 | |
S | Selection of surveying method and locations | 40 | 16,36,37,38 | |
A | Alternatives review of separation plan | 41 | 12,15,34 | |
M | Comparison of alternatives for water supply | 42 | 17 | |
M | Comparison of alternatives for electricity and lighting | 43 | 17 | |
F | Review of evacuation floors and routes | 44 | 18 | |
M | Selection of water supply plan | 45 | 17,19,42 | |
M | Selection of electric power supply and lighting plan | 46 | 17,19,43 | |
S | Construction method selection for structural framework | 47 | 19,38,48,49 | |
A | Selection of lifting equipment and pumping plan | 48 | 20,39,47,49 | |
A | Plan for vertical resource-transportation route | 49 | 19,47,48 | |
M/F | Space zoning for security and ventilation systems | 50 | 17,19 | |
F | Selection of evacuation plan | 51 | 18,19,44 | |
S | Facade protection plan | 52 | 25,47 | |
F | Standardization and fire protection for temporary facilities | 53 | 54 | |
A | Selection of optimal separation plan | 54 | 19,41 | |
A | Plan for material-handling machinery | 55 | 30,47,49,52 |