ict in prefabrication & precast housing an se cad case study 7 th industrialized building system...
TRANSCRIPT
INNOVATIVE DESIGN AND PROCESS
ICT in Prefabrication & Precast Housing
An SE CAD Case Study
7th Industrialized Building System (IBS) Roundtable Workshop
LIEW YONG SEONGB.Eng. (Hons.), M.Eng., MIES, MSSSS
Advance Contech (Singapore) Pte. Ltd.
Outline
What is SE CAD? It’s been a long way – the SE CAD story To maximize repetition through
standardization & serialization What’s ahead?
Pinnacle @ Duxton 55-storey interlinked towers with prefabricated reinforcements and
precast structural and façade components
More than 80% of Singapore populationlive in HDB flats, and most of them are precast.The HDB structural systemis prebuilt in SE CADprecast componentdatabase.
streamline construction processes to meet the challenges ahead with the use of advanced technologies
In-situ RC construction
Dependent of foreign labours Slow and weather dependent Wastages of materials Difficult quality control Environmental issue Non-systematic and non-standardized
>> Solution : prefabrication/precast technology
Use of conventional software and structural system hinder the use of prefab and precast technology
No standardization Erroneous Difficult to check and archive information
The road-blocks
Conventional RC design and detailing The designers and checkers night mare!
Hundreds of drawing to be drawn, checked and archived
The industry needs a new solution (both software and structural system) that promotes and facilitates the use of prefabrication and precast technologies for housing needs!
Criteria For Residential structure Does NOT rely on proprietary system / components Centralize database:
Eg. Joint details○ Centre reference for tested joint details for beam-wall, beam-
column, etc. Built in proven and tested precast components database of
beam, column etc Serialize name of structural members for easy reference, order
placing, production and site control, which is also third-party database friendly
Extendabie – energy saving study, virsualization etc
Super user friendly – for average user to be productive and expert in doing precast/prefab design.
centralized, reusable knowledge-base and an advanced engineering IT solution that streamlines construction processes!
Goal : A TOTAL Prefab/Precast Solution for Housing!
To maximize repetition throughstandardization & serialization
Structural Steel Better standardization Steel Database Universal Naming Convention Efficient Reference, Design, Checking, and Logistics
BEAM CAGE CODE
J/U/P 23 6 1 V
Cage series
Width of Beam
Depth of Beam
Ref. No. or Ref. No. with alphabet indicating type of stirrups
Ref. No. indicating type of main reinf.
Suffix
CAGE SERIES J Series
- Light cage where cage reinforcement are used only for beams with clear span >1.5m.
- J Series is fully shop fabricated with main bars. U Series
- Standard cage where cage reinforcement are generally used for uniformly distributed loading condition.
- Also applicable to light point load condition as specified in the details.
P Series
- Standard cage where cage reinforcement are generally used for point load condition.
- Also applicable to uniformly distrbuted loading condition as specified in the details.
SUFFIXES S – For one span beam (Discontinuous at both
ends), or for beam with depth difference from adjacent beams. Eg. J3612S / U3612S / P3612S
V – For tapered beam and for U & P Series only. Eg. U3621V / P3621V (300X600 – 900)
T – For 1st storey beam tying column / wall (column / wall at one end or both ends). Eg. U3621T / P3612T
B – For beam with non-standard width. Eg. J3612B / U3612B / P3612B
D – For beam with non-standard depth. Eg. J3612D / U3612D / P3612D
H – For beam using H bar stirrup cage. Eg. U4649H
BEAM CAGE – U SERIES
(1 or 2 layers bottom reinforcement)
( 3 layers bottom reinforcement)
U SERIES – Main Reinforcement & Stirrup
BEAM CAGE – P SERIESP SERIES – Main Reinforcement & Stirrup
(1 or 2 layers bottom reinforcement)
( 3 layers bottom reinforcement)
BEAM CAGE – “0” CAGE for U & P Series(ONLY STIRRUP CAGE)
(Main reinforcement are shown in connection details)
A handy tool for design engineers
• Efficient knowledge transfer• Know prefab, use prefab, love prefab!
SE CAD