CONTOUR CRAFTING
-
Upload
surya-c-d -
Category
Engineering
-
view
72 -
download
4
Transcript of CONTOUR CRAFTING
AUTOMATED CONSTRUCTION BY
CONTOUR CRAFTING
Prepared by Surya C.DME CEMNIT
Contents
•Introduction•Contour crafting•Application in construction•Characteristics of contour crafting•Alternative robotics approach•Applications•Comparison•Conclusion
Introduction
Growth of Automation in the construction
field has slow due to following reasons
• Unsuitability of available automated fabrication
for large scale projects
• Conventional design approaches that are not
suitable for automation
• Smaller ratio of production quantity as compared
with other industries
• Limitations in the materials used
• Expense of automated equipment
• Managerial issues
Serious problems in the construction industry
• Labor efficiency is low
• Accident rate at construction site is high
• Work quality is low
• Control of construction site is insufficient and difficult
• Skilled work force is vanishing.
Cont…
Contour crafting
CC is an additive fabrication technology by using computer control
CC is a layered fabrication method which combines ancient surface forming concepts with modern robotics technology
Cont…
• A single house or colony of houses each with possibly different design may be automatically constructed in a single run by the help of computer control.
• Conduits for electrical, plumbing and air conditioning are embedded in cc construction.
• It provides better surface quality & high speed fabrication
Application in construction
Construction of conventional building Construction of adobe building
Characteristics of CC1. Design Flexibility
2. Multiple materials
3. Paint ready surfaces
4. Automated tiling of floors and walls
5. Automated reinforcement
6. Automated plumbing and electrical works
1. Design flexibility
• Provides Flexibility while designing structures.
• Functional and exotic architectural geometries
• Difficult to construct using traditional construction techniques
2. Automated painting
• By spray paint nozzles
Gives good textured surface
3. Automatic tiling of floors and walls
4. Automated reinforcement
Metal coil placed on the top layer A fresh layer of extrudate cover the coil
a).For ordinary buildings Coil Reinforcement
5.Automated plumbing
For every so many layers plumbing modules which have solder in the inner rim are assembled. Joints are made by electric heater which melts the solder.
6.Automated Electrical & Communication utilities
Conductive elements for power and
communication lines are imbedded
in polymeric blocks and are
assembled robotically to form
the desired electrical and
communication networks.
Applications
• Applications in emergency houses
• Low income housing
• Commercial application
Applications in emergency housing
• Can deliver houses to disaster victims very rapidly. • 200 sq. foot house in less than 24 hours.
• Uses in-situ construction materials, saving the time and cost.
• Automated process, labor needs are minimized.
Low income housing
It can reduce cost of financing by reducing the duration of project.
Can reduce the cost of materials, because it is waste less process.
Can reduce the labor cost.
Can save the life of labors, because it is very safe method of construction
Portion Due to If automated by CC
20-25% Financing Short produced length
25-30% Materials Will be a waste less process
45-55% Labor Will be significantly
reduced
What constitutes construction cost?
Comparison
–Traditional System
Mixing, transporting and placing of concrete
Truck mixing is used mostly
Concrete is transported through belt conveyors, buckets and chutes depending on site and structure design
Continue…
• Using CC system
First layer of concrete is poured to a height of 5 inches. Successive layer are poured on the top of the previous layer after an
hour The one hour delay is sufficient to control the lateral pressure of the
concrete by following it to cure and harden A 10 foot high wall can be erected in a day considering the one hour
delay after each layer The time delay for the concrete hardening can be adjusted using
chemical accelerators
Conclusion
Entire neighborhood can be built At a fraction of time At a fraction of cost For more safely With ultimate architectural flexibility and highest
precision Without wastage of raw materials Without CO2 emission
REFERENCE
• Journals 1. Warsazwiski,&R. Navon, “ Implementation of robotics in
building: current status and future prospects “,Journal construction engineering and Management,
2. Koshnevis, R.Russel, H.Know “ contour crafting a layered fabrication technique”
Websites 1.www.contourcrafting.org 2.www.rcf.ucs.edu 3. www.wikipedia.com
Thank you