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Ganesh KamatB.E.(Civil),M.S.(USA) 42yrs.Exp.
Structural Audit Engineer
Affordable Housing Adviser
Affordable
Housing
By RCB Method& Structural Audit
Is R.C.C. Frame
Structure
Durable after 30
years ……? ? ?
R.C.C. Beam After 30 Years.
R.C.C. Beam & Column Crack
R.C.C. Paradi Totally Under Distress
Tree Growth in Brick Wall Bldg. Causes Damage.
Such R.C.C. Bldg. Can Collapse any time.
R.C.C. Beam,Can we Repair such Beam?
What is wrong with
R.C.C. Buildings?1) More Self Load
2) Less Cover to steel
3) Frame Structure
R.C.C.
Buildings self
Load 80 %
Live Load 20 %
So Need for
Light Materials.
By Hollow Precast
Load-bearing-Wall
By Rib Slab,
Hollow core wall,
Hollow Block
For Durability
Is Brick
Masonry Wall
Affordable-
Green- Durable?
Brick Wall ~ Block Wall
Cost of Brick ~ Block Wall
15 Brick x Rs.5/Brick:
= Rs.75/ Sq. Ft.
7.5”Block Wall Cost
= Rs. 40/ block
So SAVING=Rs.35/Sq.ft.
Also SAVING in Time,
Mortar Joint, Plaster,
Labour, Environment,
Shuttering,
Column, Beam,
Supervision.
Need for
Green, Load Bearing ,
Affordable , Speedy
Sustainable
for 100 year
Construction Method.
R.C.C. Life…..30yrs.
R.C.B. Life........100yrs
Stone Load bearing
Bldg. Life………1000yrs
Good
Construction
Needs
Knowledge &
Honesty
Green Load bearing Houses Must Be
Attractive
Economical
Eco Friendly
Proven
Simple
Speedy
Sturdy
Sustainable
While Planning the Building it is more Appropriate To Work Out Which is the Most Suitable Construction Method and Plan as per the Technology. R.C.C., STEEL, PRECAST , RIB SLAB. Aluminum-ShutteringR.C.B. (Reinforced Concrete Block Masonry.)
Affordable Due To
Optimum Planning
Detailed Designing
Detailing of each Joint
Appropriate Technology
PLANNING
More common walls
Least number of notches
Least wall area / Floor area ratio
Complete detailing for each member
Minimum number of staircase
Least common passages
Least foot print & loading
10% More Carpet Area. So Most Affordable
LESS OFFSET, MORE COMMON WALLS
1.5 BHK in 3 Lacks Beauty with Economy
TOTAL COST WITH FINISHING
For R.C.C. …….. Rs. 1000/- per Sqft.
For Aluminum Form ..Rs. 1200/- per Sqft.
For R.C.B . ………Rs. 700/- per Sqft.
1) R.C.C. type of construction was taught by
British & we are following Beam & Column
type of construction for the last hundred
years or so in India.
2) R. C. C. building needs repairs within 15
years of construction.
Not that anything is wrong with R. C. C. but
there is more scope to use inferior material &
workmanship in R.C.C.& hence need for
early repair.
3) Our Forts, Old buildings, V. T. Station,
Municipal Bldg., Palaces, Towers are
generally constructed by Stone Masonry load
bearing method & have stood since hundreds
of years without any major repair work.
4) The same load bearing technology has been
further developed in U.S.A. which is Speedy,
Sturdy, Simple, Durable, Eco-Friendly which
also saves 30% in construction cost & is
called R.C.B./ Reinforced Masonry/ C.M.U.
By Reinforced Concrete Block Masonry R.C.B.
Method of Construction
Green Affordable Structures
Advantages
(Economy, Speed & Simplicity)
Architectural Features
Earthquake, Wind & Fire resistance
Conclusion
Presentation on Green Load Bearing Housing
Method Of Construction
Concrete block 8” X 8” X 16”
Ultimate strength = 40,000 Kg/block
Staggered Joints In Block Masonry
R.C.B. Work Under Progress
As Air is freely available
and Hollow Concrete
Block is 50% hollow, if a
structure is built by
R.C.B.
the cost of construction
is slashed down.
No Beam, No Column only RCB
13 Block Layer + Slab=15 Days.
R.C.B. Pointing From Outside
In India 300 buildings have been designed by R.C.B. method in the past 30 years by us.
In the world millions of
buildings have been built by
this established & proven
American technology in the
past 90 years.
R.C.B. Users BMC Bhojwani Const.
MHADA Unity Const.
P.W.D. Vipassana
Govt. of Gujarat Lodha
Kamat Hotel (i) Ltd. Excon
Royal Hotel Arch. Bhatnagar
Ganaka Hotel Arch. Kudalkar
Poddar Developer Arch. Premnath.
Panoramic Universal African Countries
R.C.B. Structures
Architect Bhatnagar’s Bungalow, Malad,
No Beam, Column & Offset in Bungalow
6 Storey Building At Mahim For Unity Construction
Budget Motel at Igatpuri – Under Construction
RCB Column
Interior
Pointing
Method Of Pointing
BMC School At Goregaon, Mumbai
No Beam, No Column only RCB
Vertical Reinforcement At Corner
Door-Window Frame before casting Slab
Advantages
Speed
Simplicity
Sustainability
Economy
Eco - Friendly As it
SAVES,
100% Bricks,
50% Steel &
Shuttering,
40% Concrete,
25% Utility Bill.
96 Houses For Policemen, Jogeshwari
Vipasanna Meditation Hall, Igatpuri
Plan
For
65 feet
Meditation
Hall
R.C.B. WALL & SLAB
150 Earthquake Proof Homes, Gujrat
Foundation Work
Runner Beam
Vertical Steel.
Horizontal Steel.
Wall Footing
Foundation For R.C.B. Work
MASONARY JOINTS
MASONRY HORIZONTAL REINFORCEMENT
HOUSING & SLUM PROJECTS 6 Bldg. Quarters for Policemen of SRPF,
Goregaon, Mumbai For P.W.D.
16 Bldg at Vinoba Bhave Nagar transit camp, kurla, Mumbai For MHADA.
5 Bldg. For Pancharatna Soc. Complex at Neral, Maharashtra.
Transit Bldg. For Unity Construction at Sitaladevi Temple Rd. Mahim Mumbai.
150- Earthquake Proof House for Gujarat Govt. at Morvi (World Bank Project.)
Transit Bldg. For Bhojwani Builders at Khar, Mumbai.
Housing Complex for Lodha at Shirdi
RIBBLOCK
RIB
Concealed Wiring in Slab
RIB SLAB BOTTOM
RIB
BLOCKS
SHOPPING MALL AT AFRICA
COMMERCIAL & SCHOOL
PROJECT
School & Dispensary for B.M.C at Film City
road, Goregaon (E) Mumbai.
Meditation Hall for Vipassana at Igatpuri ,
Maharashtra
Old man colony at Badlapur
Fire Station at Illinois, U.S.A.
The Eldorado Theatre at Tucson U.S.A.
Shopping Centre at Tucson U.S.A.
Shopping Centre (100000 Sq.Ft.)at Africa.
R.C.B. Pyramid Prayer Hall at Africa.
BUNGALOW PROJECT
Triplex Bungalow at Malvani Church, Malad (W) Mumbai.
Six Bungalow at Kalyanpur Colony, Lonavala. Bungalow for Arch. Bhatnagar at Chickni Murud Bungalow for Mr. Rohidas Koli at Malvani, Malad
Mumbai. Bungalow for Assi. Teachers for Vipassana,
Igatpuri Bungalow for Bhatnagar, Bordi. Bunglow for Vipasanna at Titwala Bunglow for architect Premnath at Vasai 500 – (4 BHK) Bunglow at Africa.
Architectural Features
Arch Masonry Bungalow
Royal Hotel Building, Arizona. USA
R.C.B. Hotel, Tuscan, Arizona, USA
Bungalow At Lonavala
Beauty With Simplicity
Bungalow at Arizona U.S.A.
Slum House At Malad
Typical Compound Wall
HOTEL PROJECTS Hotel Granada Inn at Tucson Arizona, U.S.A.
Hotel Granada Inn at EI Paso, Texas U.S.A.
Hotel - The Chaparral at Siera Vista, Arizona
U.S.A
Hotel Maharaaja Inn at Lonavala Maharashtra,
India.
Ganaka Motel - NH3 - Near Manas Resort,
Igatpuri, India.
Kamat Hotel at Nashik
Lotus Suit at Chandigarh
4 Star Resort at Durgapur
First R.C.B. Hotel Building In India, 1977
Proposed 3 Star Hotel At Nasik For Kamat Hotel
4 Star Resort At Durgapur
Completed Masonry Building
Shear Wall
Structures Are
Also Earthquake,
Wind & Fire
Resistance
Joint Failure in R.C.C.
Simple water
Penetration Test.
Slab must NOT
Leak After
Casting
Simple Cement
Test.
Make Cement Roti
If Roti Hardens in
One Hour
Cement is OK
Need for
Low Strength
Cement for
Plaster, Masonry, P.C.C/
Flooring, Waterproofing,
Ceiling, Drainage,
Plumbing work
Fire Resistance Due To Horizontal Projection
Decorative Block Masonry
Elevation From Decorative Block Masonry
R.C.B. Decorative Blocks
Decorative
Block
Masonry
Decorative Jali Block
Economy
RCC RCB Savings
Reinforcement 3.5 Kg / SF X
Rs 55 / Kg
1.2 Kg / SF X
Rs 55 / Kg Rs 126.50
Rs 192.50 Rs 66
Cement 0.6 Bag/SF X
Rs 310 / Bag
0.25 Bag/SF X
Rs 310 / Bag
Rs 108.50Rs 186 Rs 77.50
Sand , Mettle, Brick,
Plaster, Labour.
Rs 300 Rs 235 Rs 65
Finishing & Fees Rs 321 Rs 321 ----------
(Save up to Rs. 300 / SF of slab area)
Total Rs 1000 Rs 700 Rs 300
Note : By Optimized Plan get 10% more Carpet Area.
Advantages of R.C.B. Method.
Economy : As steel, cement, formwork, concrete & Labor
required is almost half & due to simplicity of construction &
speed, minimum saving is Rs. 300/- per sq. ft. Also by
optimum planning for R.C.B. get up to 10% more carpet
Area.
Speed: No heavy equipment needed on site, less formwork,
less steel so construction is simple, speedier & hence
economical.
Fire Resistant : Due to concrete block & 3.5" cover to steel,
rusting is minimized & such buildings are fire resistant too.
Durable: Concrete blocks are attractive, durable and have excellent thermal, acoustic properties. No repair like R.C.C. is needed in every fifteen years.
Earthquake: Load bearing concrete blocks can be designed to be wind, earthquake resistant too. Up to 22 Storied.
Warranty: R.C.B. Method assured warrantee against heavy rain, flood, fire, storm, earth quake & all other natural calamities for at least 50 years.
Architecture: Ancient type of architectural elevation is also possible by R.C.B type of construction. Also R.C.B. is Environmental friendly too.
R.C.B. is also Useful
For
1) Retaining Wall
2) Bridge Abutment
3) Bridge Pier
4) Highway Culverts
REMARKS 1) For Affordability Architects/Engineers/Clients
need to take a lot of efforts in Planning, Design,
Detailing & technology.
2) Client must learn to pay for the Planning,
Design and Technology in advance.
3) Affordable structure is always green.
4) Affordable does not mean cheap construction.
5) By Optimum Planning we get 10% more
Carpet Area.(Bonus to the Builders)
CONCLUSIONConsidering Durability, Speed, Simplicity, 30% Saving & 10% more Carpet Area. This Eco Friendly R.C.B. Construction is Particularly Suited For,
Housing,
Slum Project,
Transit Camp,
Schools & Hospital,
Hotel & Bungalow,
Industrial Projects,
Retaining Wall, Culverts etc.
Ganesh KamatB.E.(Civil),M.S.(USA) 42yrs.Exp.
Structural Audit Engineer
Affordable Housing Adviser
