Category: RESOURCES

Prestressed Post-Tensioned Concrete Section

Prestressed Post-Tensioned Concrete Section

 

Prestress is defined as a method of applying pre-compression to control the stresses resulting due to external loads below the neutral axis of the beam tension developed due to external load which is more than the permissible limits of the plain concrete. The pre-compression applied (may be axial or eccentric) will induce the compressive stress below the neutral axis or as a whole of the beam c/s. Resulting either no tension or compression.Prestressed concrete is basically concrete in which internal stresses of a suitable magnitude and distribution are introduced so that the stresses resulting from the external loads are counteracted to a desired degree.

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Circular Column Analysis and Design spreadsheet

Circular Column Analysis and Design spreadsheet

Circular Column is an Excel Spreadsheet template for the design of Circular columns using BS8110. Because of its shape, all columns are considered as subjected to uniaxial bending.
When it is required to consider a column with bi-axial bending, the two eccentricities can be combined to make it a column having one eccentricity moment. RoundCol can hold design information for up to 200 columns. Using a pull down combo box, the design information for any column can be retrieved, amended and re-saved for design use as and when necessary. Each Column in RoundCol can have up to 6 Loading Cases.
Although the design results are displayed for one load case at a time, Circular Column checks the design for all 6 loading cases in one step. If a column fails the design checks for any of its load cases, the Fail-Code is shown indicating the failure. Detailed results for any load case can be displayed by the click of its radio button and also printed as and when required.

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Prestressed Concrete Circular Hollow Pole/Pile Design Based on ACI 318-14 & AASHTO 17th

Prestressed Concrete Circular Hollow Pole/Pile Design Based on ACI 318-14 & AASHTO 17th

 

Prestressed concrete circular hollow poles offer several advantages, Compared with normally reinforced concrete poles.
Prestressed poles are lighter and stronger, and they require less reinforcing steel.
The concrete is generally in compression, so cracking is unlikely except from rough handling, and the concrete that is used is usually of higher strength so it can withstand the prestressing operation.
Due to the special manufacturing process, in which the poles are spun at high speeds, they have a smoother surface that is denser and less permeable.
This lower permeability in combination with the absence of cracks prevents corrosion of reinforcement or prestressing
wire.

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Seismic Earth Pressure of Deep Stiff Wall Spreadsheet

Seismic Earth Pressure of Deep Stiff Wall Spreadsheet

 

Seismic Earth Pressure of Deep Stiff Wall Spreadsheet is very important sheet. Building codes are guiding documents for design and construction specifications to meet a prescribed acceptable amount of risk. Generally, provisions are adopted in response to poor performance; this is especially true for seismic provisions. Changes to U.S. building codes in response to poor performance during earthquakes were published in the SEAOC Blue Book (2009). However, despite no observation of damage to basements due directly to seismic earth pressure, provisions have been introduced into building codes that impact design and costs.

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Concrete Box Culvert analysis and Design Spreadsheet

Concrete Box Culvert analysis and Design Spreadsheet

 

A culvert is a structure that allows water to flow under a road, railroad, trail, or similar obstruction.

Typically embedded so as to be surrounded by soil, a culvert may be made from a pipe, reinforced concrete or other material.

It’s a structure that carries water above land is known as an aqueduct.

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Reinforcing Bar Development and Splice Length Spreadsheet

Reinforcing Bar Development and Splice Length Spreadsheet

 

Reinforcing Bar Development and Splice Length Spreadsheet is a spreadsheet program written in MS-Excel for the purpose of determining reinforcing bar development and splice lengths. Specifically, the development lengths and splice lengths for straight bars in tension as well as compression are determined. Also, the development length for standard hook bars is determined. The provisions for development and splice lengths are included for high seismic risk applications per ACI 318M-05, Chapter 21. There is also a worksheet which contains reinforcing bar data tables. This METRIC version is based on the ACI 318M-05 Code.

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