How to Estimate Preliminary Sizes of Concrete Elements?
The Constructor
NOVEMBER 15, 2020
Estimation of preliminary sizes of concrete elements is crucial for the design of structural concrete elements. Initially, the designer has to.
How to Estimate Concrete Costs?
The Constructor
DECEMBER 14, 2018
Calculating the cost of the concrete is an important step in the project estimate. The cost of concrete depends on the cost of materials, mix design,
Estimating 
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ACI METHOD OF CONCRETE MIX DESIGN
The Constructor
JANUARY 16, 2013
ACI method of concrete mix design is based on the estimated weight of the concrete per unit volume. This method takes into consideration the.
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Concrete Slab Thickness Calculator
CivilJungle
AUGUST 7, 2023
What Is a Concrete Slab Thickness Calculator? A Concrete Slab Thickness Calculator is a tool used in civil and structural engineering to estimate the required thickness of a concrete slab for a given design load, span length, maximum allowable deflection, […]
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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. 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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Cost of Concrete Per Cubic Meter | Factors Affecting Cost of Concrete| How to Estimate Concrete Cost Concrete Rate Per Cu.M. | 1 Cu.M. Concrete Price
CivilJungle
DECEMBER 27, 2021
Introduction of Cost of Concrete Per Cubic Meter. Concrete is one of the most widely used and major construction materials that is used in the construction of almost every structure. There might be a question that arises in your mind that How much does concrete cost per cubic meter? Major Factors . Labor Rates. Minor Factors.
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What Are Construction Cost Estimates | Types of Construction Cost Estimates | Purpose of Preparing a Cost Estimate
CivilJungle
OCTOBER 30, 2021
What Are Construction Cost Estimates? The construction cost estimate is defined as the predicted cost required to complete the construction of any particular project, which is prepared before the construction works are taken up. Purpose of Preparing a Cost Estimate. Types of Construction Cost Estimates. Detail Estimate .
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52 Design Flexibility Through The Use Of Concrete In Construction
Constructonomics
JANUARY 16, 2014
Without concrete the landscape of Britain would be unrecognizable. Concrete is one of the most important resources in construction today, it is the most widely used construction material in the world because of the unparalleled versatility that allows it to be used in the building of just about anything. Durability And Longevity.
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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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Simplify your concrete estimating process with Concrete Foundation Estimator 1.1.1
Construction Cost Estimating
NOVEMBER 10, 2016
Progress Builders, a full-service, Design-build company, working on residential construction market , just introduced Concrete Foundation Estimator 1.1.1 Concrete Foundation Estimator 1.1.1 was purposely intended to enhance and make the process simpler for estimating and bidding on concrete jobs.
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CALCULATE QUANTITIES OF MATERIALS FOR CONCRETE
The Constructor
APRIL 1, 2015
Quantities of materials for the production of required quantity of concrete of given mix proportions can be calculated by absolute volume method. Concrete Calculator Concrete Technology How To Guide Material Estimation Concrete Mix Design Quantity Estimation Sand'
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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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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.
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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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233 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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How Much Does a Yard of Concrete Weigh | Concrete Weight Per Cubic Foot | Weight of Wet Vs. Dry Concrete
CivilJungle
APRIL 20, 2023
How Much Does a Yard of Concrete Weigh? A solid yard of concrete has a maximum weight of 4,050 per cubic yard, and the natural weight per yard can differ depending on the component and rate applied to create the dry mixture and the quantity of water used to merge it. A cubic foot of damaged concrete weighs 75 biffs.
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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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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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229 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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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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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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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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Concrete Estimate Construction Template
Construction Cost Estimating
MARCH 21, 2014
Concrete Estimate template is designed to assist in taking-off a variety of concrete applications, such as, Footings, Thickened Edge Footings, Concrete Walls, Columns and Paving. It generates take-off quantities automatically based on the information the user inputs into the various template form fields.
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45 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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Some useful tips to work out the costs of concrete
Construction Cost Estimating
OCTOBER 30, 2018
While going to estimate the cost of new concrete, different types of variables should be taken into consideration which range from surface prep, formwork, reinforcing materials, and finish work, as well as the cost of the ready-mix concrete. Concrete pricing is generally quoted per cubic yard or cubic meter (metre).
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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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250 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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The next destination: Passive design airports
BD+C
APRIL 18, 2024
The next destination: Passive design airports 0 qpurcell Thu, 04/18/2024 - 13:59 Airports Today, we can design airports that are climate resilient, durable, long-lasting, and healthy for occupants—we can design airports using Passive House standards. By using passive design strategies to heat and cool the building.
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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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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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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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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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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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Concrete Mix Design for different grades of concrete
Construction Cost Estimating
SEPTEMBER 10, 2018
Concrete Mix Design is the process for choosing appropriate elements of concrete and finding out their relevant ratios with the purpose of developing concrete with specific minimum strength and stability as inexpensively as possible. To form concrete as inexpensively as possible. Specification 3. Workability 4.
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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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Prestressed Concrete - Definition | Method | Advantages | Disadvantages
Civil Lead
APRIL 2, 2020
What is Prestressed Concrete? Concrete can withstand a great amount of compressive stress but it has a very low tensile strength. Because of low tensile strength, concrete gets cracks when subjected to maximum load. Why prestressed concrete is used? When water comes in contact with these cracks the steel gets corroded.
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How to measure concrete mix design
Construction Cost Estimating
JUNE 26, 2019
Concrete mix design refers to the method utilized for finding out the exact ratios of cement, sand and aggregates for concrete so that the target strength of concrete can be obtained. For concrete mix design, different types of laboratory testing and calculations should be accomplished to get exact mix ratios.
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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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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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Specification of M50 concrete mix design
Construction Cost Estimating
OCTOBER 9, 2017
Concrete mix design belongs to the method of determining the ratios of concrete mix in terms of proportions of cement, sand and coarse aggregates. The concrete mix design proportions are both by volume or by mass. The mix design M-50 grade (with Admixture –Sikament) presented here is for reference purpose only.
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