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Buildable Design Appraisal System / Constructability Appraisal System

Buildable Design Appraisal System

 Objective
  • The system was developed as a means to measure the potential impact of a building design on the usage of site labour and productivity.
  • A design with a higher Buildable Design Score yields more efficient labour usage during construction, and results in higher site productivity.
 Formula  Buildable Design Score (B-Score) of Building =
B-Score of Structural System (including Roof System)

B-Score of Wall System 

B-Score of DfMA Technologies
Components of the appraisal system Buildable design is assessed based on three components:
  • Structural system - A designer can use different structural systems for different parts of the building so as to achieve the best practical design.  
  • Wall system - The Buildable Design Score for a particular wall system is computed by multiplying the percentage wall length covered by the wall system and its corresponding Labour Saving Index.
  • Design for manufacturing and assembly (DfMA) technologies - The various DfMA technologies are categorised into different classes to differentiate the potential manpower savings expected from their adoption.
 More resources

    
Constructability Appraisal System

 Objective
  • The system was developed as a means to measure the potential impact of downstream construction methods and technologies on the productivity at site. 
  • A project with a higher Constructability Score uses more labour efficient construction methods and technologies, and improves site productivity. This results in savings in manpower cost and shorter construction time. 
 Formula

Constructability Score of Building Works =

Constructability Score of Structural System
+
Constructability Score of AMEP System
+
Constructability Score of Good Industry Practices

Components of the appraisal system

The constructability of building works is assessed in three areas:

  • Structural works - Requires the greatest manpower usage for building projects; hence a switch to a more labour efficient construction system for structural works is likely to bring about a direct improvement in site productivity.
  • Architectural, mechanical, electrical and plumbing (AMEP) works – These works are also labour intensive, and site productivity gains can be achieved if builders embrace the use of efficient construction methods and technologies.
  • Good industry practices - Good project and site management is also critical to enhancing site productivity performance.
 More resources

    
Constructability Points for System Formwork (Updated 1 January 2020)

System formwork are classified into vertical formwork and horizontal formwork under the Structural Component of the Constructability Appraisal System (CAS).

There are 5 bands assigned to both vertical formwork and horizontal formwork, with different allocation of constructability points to reflect their relative efficiencies.

A. Vertical Formwork

No

Category

Constructability Points

Supplier or Builder / System Formwork

a

Band 1

15

  • Dragages B96 Steel Column/Wall Formwork

b

Band 2

14

  • ACE Steel Column/Wall Formwork
  • Asiaric Aluminium Formwork (Integrated Small-panelled)
  • China Construction-Baili 120 Column/Wall Formwork
  • Concepcion Formwozk System (Integrated Small-panelled)
  • DFS Large Area Column/Shear Wall Formwork
  • Doka Framax Column/Wall Formwork
  • Doka Frami Column/Wall Formwork
  • Doka MF240 Crane-lifted Lift Wall Formwork (Jump Form)
  • Doka OneGo Aluminium Formwork (Integrated Small-panelled)
  • Doka Top 50 Column/Wall Formwork
  • ehub PANEX-LITE Aluminium System Formwork for Columns and Walls
  • ehub PANEX-LITE Aluminium System Formwork (Integrated Small-panelled)
  • eHub Panex Column/Wall Formwork
  • E-Form Aluminium Formwork (Integrated Small-panelled)
  • E-Form Fibreglass Reinforced Plastic Formwork System for Columns/Walls
  • E-Form Fibreglass Reinforced Plastic Formwork (Integrated Small-panelled)
  • EFCO Plate Girder (MPG) + EFCO LITE (E-LITE) Column/Wall Formwork
  • Formwork Hire Crane-lifted Lift Wall Formwork (Jump Form)
  • Eng Seng Lee Aluminium Formwork (Integrated Small-panelled)
  • Formwork Hire Steel Column/Wall Formwork
  • GEOPLAST Wall/Column Formwork in ABS technopolymer
  • GETO Aluminium Formwork (Integrated Small-panelled)
  • HKL-Formaply or SGB Aluma* EasySet Aluminium Column/Wall Formwork
  • HKL-Formaply or SGB Aluma* EasySet Aluminium Formwork (Integrated Small-panelled)
  • HS-CM Steel Column/Wall Formwork
  • Hyundai Aluminum Co., Ltd. Aluminium Formwork System (Integrated Small-panelled)
  • JH g+ Column/Wall Formwork
  • K.U.S Monoset (Integrated small-panelled
  • Longxiang Construction P/L Aluminium Formwork (Integrated Small-panelled)
  • Lubeca Crane-lifted Lift Wall Formwork (Jump Form)
  • MCC Integrated Aluminium Formwork (Integrated Small-panelled)
  • MFE Aluminium Formwork with standard 600mm width slab panels, 2725mm/2975mm height wall panels (Integrated Small-panelled)
  • Nakano 1975 Steel Column/Wall Formwork
  • NuForm Aluminium Formwork (Integrated Small-panelled)
  • NuForm Automatic Climbing Lift Wall Formwork (Jump Form)
  • NuForm Column/Wall Formwork
  • PERI CB240 Crane-Lifted Wall Formwork (Jump Form)
  • PERI DUO Column/Wall Formwork
  • PERI Liwa Wall Formwork + Lico Column Formwork
  • PERI Maximo Wall Formwork + Lico Column Formwork
  • PERI Trio Wall Formwork + Lico Column Formwork
  • PERI Vario GT24 Wall Formwork + Lico Column Formwork
  • PERI Vario GT24 Wall Formwork + Vario Column Formwork
  • Richee Engineering Farasin Column/Wall Formwork
  • RMD Kwikform Minima Column/Wall Formwork
  • RMD Kwikform Superslim Soldier Column/Wall Formwork
  • Sayamatrix Technology Aluminium Formwork (Integrated Small-panelled)
  • S-Form Aluminium Formwork (Integrated Small-panelled)
  • SGB Aluma Column/Wall Formwork
  • SGB Aluma Rasto Column/Wall Formwork
  • SGD Column/Wall Formwork
  • Sim Lian Steel Column/Wall Formwork
  • Shunsheng Aluminium Formwork (Integrated Small-panelled)
  • SNK Engineering Aluminium Formwork (Integrated Small-panelled)
  • TAC Aluminium Formwork (Integrated Small-panelled)
  • Utracon Crane-lifted Lift Wall Formwork (Jump Form)
  • Utracon Vertical Formwork
  • Wee Hur Crane-lifted Wall Formwork (Jump Form)
  • Woh Hup Sateco Steel Column/Wall Formwork
  • Zulin H20 Timber Beam Formwork for Columns and Walls
  • Zulin Steel Form for Columns and Walls
  • Doka MF240 Crane-lifted Lift Wall Formwork (Jump Form)
  • Lubeca Crane-lifted Lift Wall Formwork (Jump Form)

c

Band 3

13

  • Lubeca Column/Wall Formwork
  • OKH Column/Wall Formwork
  • Vector Aluminium Formwork (Integrated Small-panelled)

d

Band 4

11

  • DFS Kumkang Aluminium Formwork (Integrated Small-panelled)
  • Fuvi EH Shear Wall+Honey MDC plastic moulded formwork system (Integrated Small-panelled)
  • MFE Aluminium Formwork with standard 450mm width slab panels, standard 2100mm height wall panels plus make-up pieces for top panels (Integrated Small-panelled)

e

Band 5

8

  • Millennium Wall & Column Formwork System

B. Horizontal Formwork

No

Category

Constructability Points

Supplier or Builder / System Formwork

a

Band 1

15

  • HKL Super R9 Table Form System

b

Band 2

14

  • Asiaric Aluminium Formwork (Integrated Small-panelled)
  • Concepcion Formwozk System (Integrated Small-panelled)
  • DFS Aluminium Truss Table Forms
  • DFS D2 Table Forms
  • Doka Load-bearing Tower d3 + Table Forms
  • Doka Dokaflex 124 Slab Formwork
  • Doka Dokamatic Table Forms
  • Doka OneGo Aluminium Formwork (Integrated Small-panelled)
  • Doka Load-bearing Tower Staxo40 + Table Forms
  • ehub PANEX-LITE Aluminium System Formwork (Integrated Small-panelled)
  • EFCO E-Z DECK Beam/Slab Forming System
  • E-Form Aluminium Formwork (Integrated Small-panelled)
  • E-Form Fibreglass Reinforced Plastic Formwork (Integrated Small-panelled)
  • Eng Seng Lee Aluminium Formwork (Integrated Small-panelled)
  • Formwork Hire H16 Table Form
  • GETO Aluminium Formwork (Integrated Small-panelled)
  • Harmonious Coretrades HC+ Tableform System
  • HKL-Formaply or SGB Aluma* EasySet Aluminium Formwork (Integrated Small-panelled)
  • HKL Super R9 Table Form System
  • HS-CM Table Forms
  • Hyundai Aluminum Co., Ltd. Aluminium Formwork System (Integrated Small-panelled)
  • K.U.S Monoset (Integrated small-panelled)
  • Longxiang Construction P/L Aluminium Formwork (Integrated Small-panelled)
  • Lubeca Technology Light Truss Tables
  • MCC Integrated Aluminium Formwork (Integrated Small-panelled)
  • MFE Aluminium Formwork with standard 600mm width slab panels, 2725mm/2975mm height wall panels (Integrated Small-panelled)
  • Nakano 1975 Steel Truss Table Forms
  • NuForm Aluminium Formwork (Integrated Small-panelled)
  • NuForm Aluminium Truss Table Forms
  • PERI Gridflex + Peri Up beam support
  • PERI PD8 Table Forms + ST100 Stacking Towers as beam support
  • PERI Skydeck + Peri Up beam support
  • PERI Up Rosett Tables
  • Richee Engineering Alufort Slab Formwork
  • RMD Kwikform AIRODEK + PROP TABLE Slab/Beam Soffit System Formwork
  • RMD Kwikform Alshor Plus Table Form System
  • RMD Kwikform RapidShor Table Form System
  • Sayamatrix Technology Aluminium Formwork (Integrated Small-panelled)
  • S-Form Aluminium Formwork (Integrated Small-Panelled)
  • SGB Aluma's Aluma Frame Tables
  • SGB Aluma Alumalite Truss Table Form
  • SGB Aluma Cuplok Table Form
  • SGB Aluma (formerly Harsco Infrastructure) Table Forms on Lightshores
  • SGD Li-deck + Wedgelock beam support
  • SHBT/ Mech-T Steel Table Formwork
  • Shunsheng Aluminium Formwork (Integrated Small-panelled)
  • Sim Lian B-60 Table Formwork
  • SNK Engineering Aluminium Formwork (Integrated Small-panelled)
  • TAC Aluminium Formwork (Integrated Small-panelled)
  • Utracon HD Table Forms
  • Wee Hur Table Formwork
  • Zulin Tableform and Zulin Ring Lock as beam support

c

Band 3

13

  • Vector Aluminium Formwork (Integrated Small-panelled)

d

Band 4

11

  • ACE Formwork System
  • DFS Kumkang Aluminium Formwork (Integrated Small-panelled)
  • Fuvi EH Shear Wall+Honey MDC plastic moulded formwork system (Integrated Small-panelled)
  • Huatraco C60 Table Forms
  • MFE Aluminium Formwork with standard 450mm width slab panels, standard 2100mm height wall panels plus make-up pieces for top panels (Integrated Small-panelled)
  • NuForm NF7K Table Forms

e

Band 5

8

  • Formwork Hire Table Forms
  • JH g+ Table Forms
  • Millennium StarTable Formwork System

*Due to the merger of Aluma and Harsco, the Aluma range of system formwork distributed by HKL-Formaply comes under SGB Aluma Singapore with effect from 1 July 2014.

Productivity assessments are conducted by formwork system suppliers or builders and witnessed by BCA.

Disclaimer: The banding of system formwork is for the purpose of allocating Constructability points to the different system formwork based only on assessment of their productivity outcome. They do not represent any form of endorsement, approval or accreditation by BCA for their purchase, lease or use. BCA will update the banding information from time to time when more system formwork have been assessed. BCA reserves the right to raise the productivity assessment standards of system formwork and the corresponding bands upon review and may downgrade any system formwork from its given band if the quality of concrete finish arising from its use is poor.      

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