Design of Doubly Reinforced Concrete Rectangular Beams with Example
The Constructor
OCTOBER 30, 2020
The doubly reinforced concrete beam design may be required when a beam’s cross-section is limited because of architectural or other considerations.
Architecture Concrete Design 
Refine versus shine: Defining and defending design intent with refined concrete
Construction Specifier
JANUARY 13, 2025
LEED AP, Vivian Volz, CSI, AIA, LEED AP, SCIP Photo courtesy Tao Group Solutions After years of grappling with client callbacks, legal disputes, and financial losses from poor polished concrete installations, the industry has reached a breaking point: prohibit polished concrete.
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TYPES OF CONCRETE MIX DESIGN
The Constructor
NOVEMBER 15, 2011
Nominal Mixes In the past the specifications for concrete prescribed the proportions of cement, fine and coarse aggregates. These mixes of fixed cement-aggregate ratio which ensures adequate strength are termed nominal mixes.
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Smart Textiles for Buildings: Rethinking the Fabric of Architecture
The Constructor
APRIL 18, 2025
Smart textiles for buildings represent a bold leap forward in construction materialswhere fiber technology meets structural engineering to create lightweight, high-performance fabric systems that rival concrete and steel. As the construction industry searches for lower-impact, high-efficiency alternatives, […]
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ACCEPTANCE CRITERIA FOR DESIGN MIX CONCRETE
The Constructor
NOVEMBER 20, 2011
The concrete shall be deemed to comply with the strength requirements if: a) every sample has a test strength not less than the characteristic value;or b) The strength of one or more samples though less than the characteristic value, is in each case not less than the greater of : 1) The characteristic strength minus 1.35
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TYPES OF CRACKS IN CONCRETE BEAMS
The Constructor
NOVEMBER 8, 2011
Cracks in concrete beams due to increased shear stress 2. Cracks in concrete beams due to corrosion or insufficient concrete cover 3. Cracks parallel to main steel in case of corrosion in beams 4.
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TEMPERATURE EFFECTS ON CONCRETE
The Constructor
MARCH 21, 2012
The size of movement depends upon the change in temperature and the coefficient of thermal expansion o f concrete.
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REINFORCEMENT COVER AND PRE-CONCRETE CHECKS
The Constructor
MARCH 20, 2012
From the diagram above, we can see how the process unfolds.
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REDUCING DRYING SHRINKAGE IN CONCRETE
The Constructor
NOVEMBER 8, 2011
This type of shrinkage is caused by the loss of moisture from the cement paste constituent, which can shrink by as much as 1% per unit length.
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STRUCTURAL USES OF PRECAST CONCRETE
The Constructor
MARCH 25, 2012
Use of Precast Concrete in frames: There are two main types of precast building frame.
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BENEFITS OF USING STEEL FIBRES IN CONCRETE
The Constructor
JANUARY 1, 2012
The benefits of using steel fibres in concrete are as follows: 1. Steel Fibres are generally distributed throughout a given cross section whereas reinforcing bars or wires are placed only where required 2.
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FEATURES OF PRECAST CONCRETE
The Constructor
MARCH 25, 2012
Home News Videos Tips Building Building Bye Laws Building Materials Aggregates Cement Wood Building Tips Buildings Green Buildings Flooring Formwork/Shuttering Paints & Decoratives Skyscrappers Smart Materials Concrete Concrete Admixtures Concrete Cracks Crack Repair Concrete Durability Concrete Properties Concrete Types Fibre reinforced Fire Proof (..)
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TYPES OF CRACKS IN REINFORCED CONCRETE SLABS
The Constructor
NOVEMBER 8, 2011
Cracks in reinforced concrete columns due to Steel Corrosion (cracks parallel to steel bars) 2. Cracks in reinforced concrete columns due to shrinkage of concrete 3.
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WHY WE TEST CONCRETE SRTRENGTH AFTER 28 DAYS?
The Constructor
NOVEMBER 25, 2011
WHY WE TEST CONCRETE SRTRENGTH AFTER 28 DAYS? Tweet Why do we test concrete compressive strength after 28 days? The table below shows the compressive strength gained by concrete after 1, 3, 7, 14 and 28 days with respect to the grade of concrete we use.
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CELLULAR LIGHTWEIGHT CONCRETE?FLY ASH BASED
The Constructor
NOVEMBER 22, 2011
It has many advantages when compared to the normal conventional concrete. Fly ash is considered as one of the waste industrial product that cannot be easily disposed.
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PUMPED CONCRETE PUMP TYPES & SELECTION
The Constructor
NOVEMBER 28, 2011
This method is used where large quantity of concrete work is involved at greater height, where other means of transporting is not easy to do.
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EXPOSURE CONDITIONS AFFECTING DURABILITY OF CONCRETE
The Constructor
AUGUST 10, 2012
These are: Mild exposure Moderate exposure Severe exposure Very severe exposure, and Extreme exposure.
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PRESTRESSED CONCRETE OVER REINFORCED CONCRETE.
The Constructor
MARCH 23, 2012
There are two ways of overcoming this problem: Embed another material in the concrete which is strong in tension – reinforced concrete Remove the tension altogether – by arching or prestressing.
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200 FACTORS AFFECTING STRENGTH OF CONCRETE
The Constructor
MARCH 21, 2012
Home News Videos Tips Building Building Bye Laws Building Materials Aggregates Cement Wood Building Tips Buildings Green Buildings Flooring Formwork/Shuttering Paints & Decoratives Skyscrappers Smart Materials Concrete Concrete Admixtures Concrete Cracks Crack Repair Concrete Durability Concrete Properties Concrete Types Fibre reinforced Fire Proof (..)
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PRECAST CONCRETE PROCESS
The Constructor
MARCH 25, 2012
The individual components are prefabricated off site then taken to site where they are erected.
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210 CONCRETE CREEP
The Constructor
MARCH 22, 2012
Water within the hardened cement paste is forced to more as a result of the applied load. This movement of moisture is the primary cause of creep deformation.
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PRE-CONCRETE CHECKS FOR FORMWORK & RELEASE AGENTS
The Constructor
MARCH 19, 2012
Home News Videos Tips Building Building Bye Laws Building Materials Aggregates Cement Wood Building Tips Buildings Green Buildings Flooring Formwork/Shuttering Paints & Decoratives Skyscrappers Smart Materials Concrete Concrete Admixtures Concrete Cracks Crack Repair Concrete Durability Concrete Properties Concrete Types Fibre reinforced Fire Proof (..)
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PRECAST CONCRETE CLADDING CONSTRUCTION AND.
The Constructor
AUGUST 7, 2012
Home News Videos Tips Building Building Bye Laws Building Materials Aggregates Cement Wood Building Tips Buildings Green Buildings Flooring Formwork/Shuttering Paints & Decoratives Skyscrappers Smart Materials Concrete Concrete Admixtures Concrete Cracks Crack Repair Concrete Durability Concrete Properties Concrete Types Fibre reinforced Fire Proof (..)
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THIN SHELL CONCRETE STRUCTURE?TYPES & FORMS
The Constructor
NOVEMBER 17, 2011
Home News Videos Tips Building Building Bye Laws Building Materials Aggregates Cement Wood Building Tips Buildings Green Buildings Flooring Formwork/Shuttering Paints & Decoratives Skyscrappers Smart Materials Concrete Concrete Admixtures Concrete Cracks Crack Repair Concrete Durability Concrete Properties Concrete Types Fibre reinforced Fire Proof (..)
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WHAT IS PRECAST CONCRETE?
The Constructor
MARCH 25, 2012
WHAT IS PRECAST CONCRETE? Tweet Precast concrete is cast under factory controlled conditions and not erected on site until it is fully hardened. Just like in-situ concrete, precast concrete can be plain, reinforced or prestressed concrete.
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COMPOSITION OF REACTIVE POWDER CONCRETE (RPC)
The Constructor
DECEMBER 17, 2011
Home News Videos Tips Building Building Bye Laws Building Materials Aggregates Cement Wood Building Tips Buildings Green Buildings Flooring Formwork/Shuttering Paints & Decoratives Skyscrappers Smart Materials Concrete Concrete Admixtures Concrete Cracks Crack Repair Concrete Durability Concrete Properties Concrete Types Fibre reinforced Fire Proof (..)
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TESTS ON WATER FOR CONCRETE
The Constructor
AUGUST 18, 2012
Home News Videos Tips Building Building Bye Laws Building Materials Aggregates Cement Wood Building Tips Buildings Green Buildings Flooring Formwork/Shuttering Paints & Decoratives Skyscrappers Smart Materials Concrete Concrete Admixtures Concrete Cracks Crack Repair Concrete Durability Concrete Properties Concrete Types Fibre reinforced Fire Proof (..)
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207 TYPES OF PRECAST CONCRETE CLADDING & FEATURES
The Constructor
AUGUST 7, 2012
Home News Videos Tips Building Building Bye Laws Building Materials Aggregates Cement Wood Building Tips Buildings Green Buildings Flooring Formwork/Shuttering Paints & Decoratives Skyscrappers Smart Materials Concrete Concrete Admixtures Concrete Cracks Crack Repair Concrete Durability Concrete Properties Concrete Types Fibre reinforced Fire Proof (..)
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BULK DESNSITY OF CONCRETE
The Constructor
NOVEMBER 28, 2011
Procedure for measuring bulk density of concrete is as per IS 1199 – methods of sampling and analysis of concrete.
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STRESS-STRAIN CURVE FOR CONCRETE
The Constructor
JANUARY 22, 2012
The aggregate is more rigid than the cement paste and will therefore deform less (i.e. have a lower strain) under the same applied stress.
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202 LOADS ON PRECAST CONCRETE CLADDINGS
The Constructor
AUGUST 24, 2012
Cladding panels behave like wall panels and are therefore subjected to the same forces, i.e. axial compression, horizontal flexure due to wind, and in-plane and out-of-plane shear.
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3D-Printed Neighborhoods: Mass Production for Affordable Housing
The Constructor
MARCH 3, 2025
This innovative method combines advanced robotics, specialized concrete mixtures, and digital design to create customizable housing structures with minimal waste. As affordable housing shortages intensify globally, 3D printing is […]
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What are the Architectural Factors Affecting the Choice of Long-Span Concrete Floor?
The Constructor
MAY 16, 2021
Nowadays, long-span slabs are highly desirable as building owners demand spaces without columns. The selection of floor slabs such as flat plate,
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264 The Ultimate Office Design Build Case Study – Us!
HardHatChat
NOVEMBER 18, 2010
So it is with great pride that I announce the completion of our most successful Chicago design build office construction job to date – the new headquarters of Englewood Construction! When it comes to a commercial construction retrofit, let the design work with, not against, the existing structure. Don’t design in a silo.
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How Pollution and Dirt Are Quietly Ruining City Skylines
Construction Marketing
MARCH 19, 2025
City skylines are meant to be a reflection of progress, innovation, and architectural brilliance. Vehicle emissions, industrial pollutants, and airborne particles settle on surfaces, creating a layer of grime that dulls even the most striking architectural designs.
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Concrete
GCP Applied Technologies
MARCH 2, 2020
Concrete admixtures have been around for nearly a century. Since then, water reducers, superplasticizers, set accelerators, rheology control agents, air-entrainment, among other concrete admixtures, have become essential in the ready mix concrete , precast, tunneling and other concrete industries. Concrete mix design.
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Concrete admixture
GCP Applied Technologies
MARCH 2, 2020
Concrete admixture. Mid-range water reducers – These admixtures provide superior placeability and finishing for concrete flatwork, in commercial and high-end residential construciton. Air detraining agents – These liquid air-detraining admixtures reduce the level of plastic air in non air-entrained concrete. michael.delros….
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133 SHEAR WALL - ITS TYPES AND POSITIONING
The Constructor
MARCH 23, 2012
Codes of practice impose limits on horizontal movement or sway.
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240 BRICK MASONRY CONSTRUCTION TIPS
The Constructor
NOVEMBER 15, 2011
Tweet Loading GET LATEST TOPICS IN YOUR EMAIL- SUBSCRIBE NOW.
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247 COMMON STRUCTURAL FAILURE CAUSES
The Constructor
NOVEMBER 19, 2011
Even experience in extensive design in academic context can provide only limited perspective in engineering decision making. Most lessons in engineering decision making come from the cases of histories of failures of structures, which itself are the results of a bad judgement, thus making us understand the pitfalls in conceptual design.
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METHODS OF BRIDGE CONSTRUCTION
The Constructor
JANUARY 17, 2012
The decision is made by the design team.
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TYPES OF PRECAST COMPONENTS IN A BUILDING
The Constructor
MARCH 27, 2012
The numbers of different types of components in these structures over the years have become very large.
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ACCELERATED CURING METHOD FOR COMPRESSIVE.
The Constructor
NOVEMBER 27, 2011
This method is also used to find out 28 days compressive strength of concrete in 28 hours. (As As per IS 9013-1978-Method of making, curing and determining compressive strength of accelerated cured concrete test specimens).
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DIGITAL COMPRESSION TESTING MACHINE
The Constructor
NOVEMBER 27, 2011
hardened concrete). hardened concrete). hardened concrete). hardened concrete). hardened concrete). hardened concrete). Procedure as per IS 516 – Methods of tests for strength of concrete 1.
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