Development Length for Hooked Bar Formula

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Development Length is the amount of reinforcement or bar length needed to be embedded into the column to establish the desired bond strength between the concrete and steel. Check FAQs
Ld=1200Dbfc
Ld - Development Length?Db - Bar Diameter?fc - 28 Day Compressive Strength of Concrete?

Development Length for Hooked Bar Example

With values
With units
Only example

Here is how the Development Length for Hooked Bar equation looks like with Values.

Here is how the Development Length for Hooked Bar equation looks like with Units.

Here is how the Development Length for Hooked Bar equation looks like.

400.0017Edit=12001.291Edit15Edit
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Development Length for Hooked Bar Solution

Follow our step by step solution on how to calculate Development Length for Hooked Bar?

FIRST Step Consider the formula
Ld=1200Dbfc
Next Step Substitute values of Variables
Ld=12001.291m15MPa
Next Step Convert Units
Ld=12001.291m1.5E+7Pa
Next Step Prepare to Evaluate
Ld=12001.2911.5E+7
Next Step Evaluate
Ld=0.400001719996302m
Next Step Convert to Output's Unit
Ld=400.001719996302mm
LAST Step Rounding Answer
Ld=400.0017mm

Development Length for Hooked Bar Formula Elements

Variables
Functions
Development Length
Development Length is the amount of reinforcement or bar length needed to be embedded into the column to establish the desired bond strength between the concrete and steel.
Symbol: Ld
Measurement: LengthUnit: mm
Note: Value should be greater than 0.
Bar Diameter
Bar Diameter are most usually comprised to 12, 16, 20, and 25 mm.
Symbol: Db
Measurement: LengthUnit: m
Note: Value should be greater than 0.
28 Day Compressive Strength of Concrete
28 Day Compressive Strength of Concrete is defined as the strength of the concrete after 28 days of using it.
Symbol: fc
Measurement: StressUnit: MPa
Note: Value should be greater than 0.
sqrt
A square root function is a function that takes a non-negative number as an input and returns the square root of the given input number.
Syntax: sqrt(Number)

Other formulas in Shear Reinforcement category

​Go Ultimate Shear Capacity of Beam Section
Vn=(Vc+Vs)
​Go Nominal Shear Strength of Concrete
Vc=(1.9fc+((2500ρw)(VuDcentroidBM)))(bwDcentroid)
​Go Nominal Shear Strength Provided by Reinforcement
Vs=Vn-Vc
​Go Area of Steel Required in Vertical Stirrups
As=VssfysteelDcentroid

How to Evaluate Development Length for Hooked Bar?

Development Length for Hooked Bar evaluator uses Development Length = (1200*Bar Diameter)/sqrt(28 Day Compressive Strength of Concrete) to evaluate the Development Length, The Development Length for Hooked Bar can be defined as the amount of reinforcement(bar) length needed to be embedded or projected into the column to establish the desired bond strength between the concrete and steel. Development Length is denoted by Ld symbol.

How to evaluate Development Length for Hooked Bar using this online evaluator? To use this online evaluator for Development Length for Hooked Bar, enter Bar Diameter (Db) & 28 Day Compressive Strength of Concrete (fc) and hit the calculate button.

FAQs on Development Length for Hooked Bar

What is the formula to find Development Length for Hooked Bar?
The formula of Development Length for Hooked Bar is expressed as Development Length = (1200*Bar Diameter)/sqrt(28 Day Compressive Strength of Concrete). Here is an example- 400001.7 = (1200*1.291)/sqrt(15000000).
How to calculate Development Length for Hooked Bar?
With Bar Diameter (Db) & 28 Day Compressive Strength of Concrete (fc) we can find Development Length for Hooked Bar using the formula - Development Length = (1200*Bar Diameter)/sqrt(28 Day Compressive Strength of Concrete). This formula also uses Square Root Function function(s).
Can the Development Length for Hooked Bar be negative?
No, the Development Length for Hooked Bar, measured in Length cannot be negative.
Which unit is used to measure Development Length for Hooked Bar?
Development Length for Hooked Bar is usually measured using the Millimeter[mm] for Length. Meter[mm], Kilometer[mm], Decimeter[mm] are the few other units in which Development Length for Hooked Bar can be measured.
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