Footing Bar Bending Schedule (BBS) – Estimation of Steel Quantity
The Constructor
OCTOBER 19, 2018
Bar bending schedule (BBS) of an concrete footing provides the reinforcement details and the total steel quantity required for the footing.
Concrete Design Estimating Schedule 
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. Nominal Mixes In the past the specifications for concrete prescribed the proportions of cement, fine and coarse aggregates.
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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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BIM at LOD400: Why Level of Development 400 matters for design and virtual construction
BD+C
MARCH 11, 2024
Stephen Blumenbaum, PE, SE, Walter P Moore Contractors Designers Designers / Specifiers / Landscape Architects Engineers Facility Managers Architects Building Owners AEC Tech BIM and Information Technology Building Tech Structural Materials Steel Buildings Today’s fast-paced world of design and construction is fractured.
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8 essential steps for effective project cost estimation and budgeting
Fieldwire
MARCH 5, 2024
Estimating project costs correctly and managing the budget accordingly are just as vital. All subcontractors make project cost estimation and budgeting errors. Follow these eight essential steps to estimate project costs and budget funds effectively to prevent grave miscalculations. Digital data lends itself to analytics.
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Construction Estimating Software: The Complete Guide
Autodesk Construction Cloud
JUNE 24, 2022
New opportunities and challenges highlight the importance of producing accurate estimates. In an industry with razor-thin margins, incorrect estimates can lead to a major hit in profitability and wreak havoc on your company’s finances. One of the best ways to do this is to use construction estimating software. .
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Bar Bending Schedule(BBS)of Footing – Estimation of Steel Quantity
The Constructor
OCTOBER 19, 2018
The bar bending schedule(BBS) of an R.C.C footing provides the reinforcement details and the total steel quantity required for the footing.
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What Is Estimate | Types of Estimate |Requirement Data for Estimation |Advantage of Estimate | Disadvantage of Estimate | Types of Cost Estimation
CivilJungle
FEBRUARY 5, 2021
What Is Estimate? The estimated or anticipated cost of the project is an estimate that is commonly calculated well before the project is taken up. The main goal of estimation is to encourage us to always understand the cost of work prior. Appropriate estimation is planned by detailed estimation in specific item wise.
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Effective Marketing For Diverse Construction Job Categories
Construction Marketing
JANUARY 24, 2024
Architects Design and plan construction projects, considering both aesthetic and functional aspects. Engineers (Civil, Structural, Mechanical, Electrical) Civil engineers focus on the design and maintenance of infrastructure. Structural engineers design and analyze structures for stability and safety.
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Bar Bending Schedule - Importance | advantages | Preparation
Civil Lead
JANUARY 23, 2020
What is Bar Bending Schedule (BBS)? Bar bending schedule is a list of reinforcement bars in a tabular form giving the particulars of bars, the shape of bending with sketches, length of each, total length and total weight. Usually, for each type of RCC work a schedule of bars is usually prepared. Lintel, Slab - 0.7 Beams - 1.0
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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. Cracks due to increased bending stress in beams 5.
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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. The structural frame consists of slabs, beams and columns. Structural frames are mainly used for offices, car parks and retail developments. The cross-wall frame consists of floor slabs and solid walls.
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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. Steel fibres are relatively short and closely spaced as compared with countinuous reinforcing bars of wires.
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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. The coefficient of thermal expansion of concrete is influenced largely by the coefficient of thermal expansion of the aggregates since the aggregate occupies 70-80% of the volume of the concrete.
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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. Cracks in reinforced concrete columns due to increased load on the slab 4. Cracks in reinforced concrete columns due to sulphate attack 5.
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REDUCING DRYING SHRINKAGE IN CONCRETE
The Constructor
NOVEMBER 8, 2011
Upon wetting, concrete tends to expand. 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. Unfortunately, aggregate provides internal restraint that reduces the magnitude of this volume change to about 0.05%.
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PRECAST CONCRETE CLADDING CONSTRUCTION AND.
The Constructor
AUGUST 7, 2012
They may be load bearing, or they may be just decorative to act as a façade. The techniques that are used in the manufacture of panels permit a variety of finishes that imitate virtually any type of architecture at a fraction of the cost.
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190 TYPES OF PRECAST CONCRETE CLADDING & FEATURES
The Constructor
AUGUST 7, 2012
In this case, the panels are designed and detailed by the engineer. Non-Load bearing cladding panel: A non-load bearing cladding panel must be designed, together with its fittings, to withstand the appropriate wind forces. The precast manufacturer checks the handling aspects and if necessary will modify the reinforcement accordingly.
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223 FACTORS AFFECTING STRENGTH OF CONCRETE
The Constructor
MARCH 21, 2012
in dry conditions), it should be suitable for use in concrete. Quality of Raw Materials: Cement: Provided the cement conforms with the appropriate standard and it has been stored correctly (i.e.
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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. Concrete pumps have been known for more than 50 years.
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EXPOSURE CONDITIONS AFFECTING DURABILITY OF CONCRETE
The Constructor
AUGUST 10, 2012
These are the environments to which the concrete will be exposed during its working life. These are: Mild exposure Moderate exposure Severe exposure Very severe exposure, and Extreme exposure. The durability requirement, like clear cover to reinforcement steel is governed by these exposure conditions.
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Building Bigger to Benefit from Economies of Scale
Wolgast Corporation
FEBRUARY 26, 2024
I spoke with our Senior Estimator, Rob Johnson, about his take on economies of scale and his big message was, “as the scope increases, the square foot cost comes down”. He explained that when he is estimating a project, economies of scale are based on internal vs. external factors. Also included with this is future proofing.
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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? 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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REINFORCEMENT COVER AND PRE-CONCRETE CHECKS
The Constructor
MARCH 20, 2012
From the diagram above, we can see how the process unfolds. When the binding has set, the steel bars are placed into position.
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PRE-CONCRETE CHECKS FOR FORMWORK & RELEASE AGENTS
The Constructor
MARCH 19, 2012
Depending on how big or complicated the pour is, the inspection may just take few minutes or it could take hours. Only when the formwork has been approved, may the pour take place.
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235 EdiLus-RC – A powerful software for concrete design & reinforced concrete structural calculation
Construction Cost Estimating
AUGUST 29, 2018
EdiLus-RC is an exclusive software for making perfect concrete design that deals with structural calculations toward new and subsisting buildings in reinforced concrete by means of the most simple and effective SMART BIM object input. The first structural calculations BIM software for reinforced concrete buildings.
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FEATURES OF PRECAST CONCRETE
The Constructor
MARCH 25, 2012
There is no grout loss, such as that from badly fitting formwork, which results in poor quality concrete like shown below. By careful selection of materials and finishing processes, a wide range of high quality finishes can be obtained.
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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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133 CONCRETE CREEP
The Constructor
MARCH 22, 2012
Following are the cases, which affect creep in concrete: When the aggregate volume is increased, creep will be less as the aggregate is more rigid than the cement paste. Creep can continue over a long period of time (more than 30 years in some cases) after the application of the load.
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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. It solves the problem of disposal of flyash and at the same time it reduces the cost of the construction.
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CONCRETE CURING METHODS
The Constructor
NOVEMBER 21, 2011
Both the rate and degree of hydration, and the resulting strength of the final concrete, depend on the curing process that follows placing and consolidating the plastic concrete. This reaction, called hydration, produces a stone-like substance—the hardened cement paste.
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PRECAST CONCRETE PROCESS
The Constructor
MARCH 25, 2012
The following figures illustrate the precast concrete process: 1. The individual components are prefabricated off site then taken to site where they are erected.
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Types of Concrete Blocks
CivilJungle
JANUARY 20, 2022
Introduction of Concrete Blocks. Concrete blocks are widely known as Concrete Masonry Unit (CMU) This type of concrete blocks have some advantages with compare to brick and stone masonry blocks. This concrete blocks may be solid in shape or hollow. Also, read: What Is Concrete | 31 Different Types of Concrete.
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REPAIR OF POST CONCRETING DEFECTS IN STRUCTURES
The Constructor
MARCH 20, 2012
Cleanliness: when repairing concrete, care must be taken to remove any dirt or dust that will prevent the repair concrete bonding with the parent concrete. Correct technique : The correct technique and the correct tools are essential for repairing damaged concrete.
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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. Tweet Precast concrete is cast under factory controlled conditions and not erected on site until it is fully hardened.
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What Is Concrete | Different Types of Concrete
CivilJungle
APRIL 26, 2020
What Is Concrete? Concrete is the final product resulting from mixing cement , aggregates (including sand), water, and mixtures. The first use of concrete was by the Roman Empire. The Pantheon is the largest unreinforced concrete dome in the world, built-in 120 A.D. Different Types of Concrete. Dry lean Concrete.
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64 TESTS ON WATER FOR CONCRETE
The Constructor
AUGUST 18, 2012
Related posts: SELF COMPACTING CONCRETE WITH TESTS TESTS ON HARDENED CONCRETE CHEMICAL TESTS ON CONCRETE STRUCTURES COMMON TESTS ON THE FRESH CONCRETE Removing concrete slab to build wood deck but worried about water entering basement? Tweet Loading GET LATEST TOPICS IN YOUR EMAIL- SUBSCRIBE NOW.
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What Is Concrete Screed | Concrete Screed Specifications | Characteristics of Concrete Screed | Advantages & Disadvantages of Concrete Screed
CivilJungle
MAY 29, 2021
Introduction of Concrete Screed. A construction element which is available in a range of thickness to bring forth the installation surface of the concrete flooring to a considerable height & to produce a surface suitable for installing the desired flooring is called a concrete screed. What Is Concrete Screed?
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THIN SHELL CONCRETE STRUCTURE?TYPES & FORMS
The Constructor
NOVEMBER 17, 2011
The shells are most commonly flat plates and domes , but may also take the form of ellipsoids or cylindrical sections, or some combination thereof.
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COMPOSITION OF REACTIVE POWDER CONCRETE (RPC)
The Constructor
DECEMBER 17, 2011
It is new technique involved in the civil engineering.Reactive powder concrete in made by replacing the conventional sand and aggregate by grounded quartz less than300 micron size, silica fume, synthesized precipitated silica ,steel fibers about 1 cm in length and 180 micron in diameter.
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161 LOADS ON PRECAST CONCRETE CLADDINGS
The Constructor
AUGUST 24, 2012
Heat expansion of the cladding panel must be allowed for in the design. But considerations must also be given to loads that may be exerted on the cladding due to either its own or the supporting structure’s expansion during fire. Thus: Firstly the fixings must be flexible enough to allow for two dimensional movement.
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STRESS-STRAIN CURVE FOR CONCRETE
The Constructor
JANUARY 22, 2012
The stress strain curve of concrete lies between those of the aggregate and the cement paste. 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. However this relationship is non-linear over the most of the range.
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137 FOUR PHASES OF PROJECT MANAGEMENT
The Constructor
SEPTEMBER 10, 2012
Organizing projects means defining roles and responsibilities, create a project charter, and develop high-level time and cost estimates. In this phase you assemble your team and assign tasks to individuals, develop a budget for the project, develop a schedule and create a communications plan.
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. The steps are as follows: i)Take freshly mixed concrete from transit mixer by using wheel borrow. ii) Fill the cylindrical measure with concrete as soon as practicable after mixing.
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