Thursday, March 24, 2011

Autocad 2004

Autocad 2004
AutoCAD is a CAD(Computer Aided Design or Computer Aided Drafting) software application for 2D and 3D Designing and Drafting, developed and sold by Autodesk .inc Initially released in late 1982, AutoCAD was one of the first CAD programs to run on personal computers, and notably the IBM PC. Most CAD software at the time ran on graphics terminals connected to mainframe computers or mini-computers.
In earlier releases, AutoCAD used primitive entities — such as lines, polylines, circles, arcs, and text — as the foundation for more complex objects. Since the mid-1990s, AutoCAD has supported custom objects through its C++ API. Modern AutoCAD includes a full set of basic solid modeling and 3D tools. With the release of AutoCAD 2007 came improved 3D modeling functionality, which meant better navigation when working in 3D. Moreover, it became easier to edit 3D models. The mental ray engine was included in rendering, it was now possible to do quality renderings. AutoCAD 2010 introduced parametric functionality and mesh modeling.
AutoCAD supports a number of application programming interfaces (APIs) for customization and automation. These include AutoLISP, Visual LISP, VBA, .NET and ObjectARX. ObjectARX is a C++ class library, which was also the base for products extending AutoCAD functionality to specific fields, to create products such as AutoCAD Architecture, AutoCAD Electrical, AutoCAD Civil 3D, or third-party AutoCAD-based applications.


AutoCAD 2010

Autocad 2010 is one of the most exciting releases in AutoCAD. It offers new features across the board, so that almost everyone will find something valuable.
AutoCAD 2010 has several new features as

Dynamic Blocks

  • More compelling authoring environment
  • Easier to author dynamic blocks
  • flexible and powerful dynamic blocks with Constraint Parameters
  • Easy understanding and later edit authored behavior
  • A Test block without exiting Block Editor
• Added the ability for a CAD Manager to create Advanced User Profiles
• Dynamic paths in the registry
• All user-customizable support files should be installed to Roaming AppData by default
• Allow choice for support content location


AutoCAD Video Tutorials

AutoCAD 2010 Tutorial
Download Free AutoCAD 2010 Video Tutorials


Thursday, March 17, 2011

Using GIS with HEC RAS

HEC-RAS has the ability to import three-dimensional river schematic and cross section data created in a GIS or CADD system.While the HEC RAS software only utilizes two dimensional data during the computations,the 3D information is used in the program for display purposes.After the user has completed a hydraulic analysisi,the computed water surface profiles can be exported back to the GIS or CADD system for development and display of a floodplain map.
The importing and exporting of GIS or CADD data is accomplished through the use of formatted ASCII text files,The text files provide a generic way of exchanging data between GIS/CADD systems and HEC -RAS,without adopting any single GIS/CADD system.
The HEC has developed a set of macros for Arc Info(using Arc Macro Language,AML) that will allow a user to write the geometric data in the required format as well as read the HEC-RAS results and perform the floodplain mapping.

To view more download this chapter

Download GIS with HEC RAS ebook


Tuesday, March 15, 2011

HEC RAS Manual

HEC RAS Working with HEC RAS an overview
HEC RAS is an itergrated package of hydraulic analysis programs,in which the user interacts with the system through the use of a Graphical User Interface.The system is capable of Performing Steady Flow Water surface profile calculations and will include unsteady flow,sediment transport and several hydraulic design computations in the future.
In HEC-RAS terminolgy, a project is a set of data files associated with a particular river system.The modeler can perform any or all of the various types of analyses,included in the HEC RAS package,as part of the project.The data files for a project are categorized as follows;plan data,geometric data,steady flow data,unsteady flow data,sediment data and hydraulic design data.

  • Starting HEC RAS
  • Steps in Developing a Hydraulic Model with HEC RAS
  • Importing HEC-2 Data
  • Reproducing HEC-2 Results
  • Getting and Using Help

Download this HEC RAS ebook


Starting new Project HEC RAS

This Chapter provides an example application ofhow to perfom steady flow water surface profile calculations with HEC-RAS.The user is taken through a step by step procedure of how to enter data,perfom calculations,and view the results.


  • Starting a New Project
  • Entering Geometric Data
  • Entering Steady Flow Data
  • Performing the Hydraulic Calculations
  • Viewing Results
  • Printing Graphics and Tables
  • Exiting the Program
Download HEC RAS Manual



Watercad manual

WaterCAD is a powerful yet easy to use program that helps engineers design and analyze complex
pressurized piping systems. WaterCAD’s powerful graphical interface (both in Stand-Alone and
AutoCAD mode) makes it easy to quickly lay out a complex network of pipes, tanks, pumps, and
more. You can use WaterCAD to:
• Perform steady-state analyses of water distribution systems with pumps, tanks, and control
• Perform extended period simulations to analyze the piping system's response to varying supply
and demand schedules.
• Perform water quality simulations to determine the water source and age, or track the growth
or decay of a chemical constituent throughout the network.
• Perform Fire Flow Analyses on your system to determine how your system will behave under
extreme conditions.
• Use the powerful Scenario Management features to mix and match a variety of "What If?"
alternatives on your system. Create multiple sets of hydraulic, physical property, operational,
initial setting, fire flow, cost, and water quality alternatives. Create and run any number of
scenarios by mixing and matching alternatives, then view and compare the results quickly and
easily with WaterCAD's flexible scenario management feature.


  • What is watercad
  • Installation
  • Learning WaterCAD
  • Contacting Heasted Methods
  • WaterCAD Main Menu
  • Quick Start Lessons
  • Starting a WaterCAD Project
  • Laying Out and Editing Tools
  • Hydraulic Elements Editor
  • Flex Tables
  • Scenarios and Alternatives
  • Modeling Capabilities
  • Cost Estimating
  • Presenting your Results
  • Engineering Libraries
  • GIS and Database Connections
  • Exchanging Data with CAD Software
  • Additional Features of the AutoCAD Version
  • Appendix A - Frequently Asked Questions
  • Appendix B - WaterCAD Theory
  • Appendix C - Scenario Management Guide
  • Appendix D - Haestad Methods Software
Download WaterCAD Manual


HEC RAS output Variables


Download HEC RAS output Variables


Monday, February 21, 2011

National Geographic Megastructures

Sears Tower Megastructure Documentary Download
Willis Tower
(formerly named, but still commonly referred to as, Sears Tower) is a 108-story, 1451-foot (442 m) skyscraper in Chicago, Illinois. At the time of its completion in 1974, it was the tallest building in the world, surpassing the World Trade Center towers in New York, and it held this rank for nearly 25 years. The Willis Tower is the tallest building in the United States and the fifth-tallest freestanding structure in the world, as well as the fifth tallest building in the world to the roof.

For 20 years, the Sears Tower held the record for the world’s tallest building. Completed in 1974, the 108 stories high building is almost half a kilometer tall. And it still holds the record for having the world’s highest antenna. John Zils, structural engineer and designer of this mega-structure shares some of the secrets about the tower. And get a behind-the-scenes look at some of the various systems and controls that are vital to the building, like security monitoring, the elevators, and the water and power distribution to the various levels, and even the machines that cleans the windows.

Although Sears' naming rights expired in 2003, the building continued to be called Sears Tower for several years. In March 2009 London-based insurance broker Willis Group Holdings, Ltd., agreed to lease a portion of the building and obtained the building's naming rights. On July 16, 2009, the building was officially renamed Willis Tower.

At 1,482.6 feet (451.9 m) tall, including decorative spires, the Petronas Twin Towers in Kuala Lumpur, Malaysia, laid claim to replacing the Sears Tower as the tallest building in the world in 1998. Not everyone agreed, and in the ensuing controversy four different categories of "tallest building" were created. Of these, Petronas was the tallest in one category (height to top of architectural elements, meaning spires but not antennas).

Download Megastructure Sears Tower Documentary


Sunday, February 20, 2011

Channel Tunnel

The Channel Tunnel ( is a 50.5-kilometre (31.4 mi) undersea rail tunnel linking Folkestone, Kent in the United Kingdom with Coquelles, Pas-de-Calais near Calais in northern France beneath the English Channel at the Strait of Dover. At its lowest point, it is 75 metres (250 ft) deep.[3][4][5] At 37.9 kilometres (23.5 mi), the Channel Tunnel possesses the longest undersea portion of any tunnel in the world, although the Seikan Tunnel in Japan is both longer overall at 53.85 kilometres (33.46 mi), and deeper at 240 metres (790 ft) below sea level. A tunnel connecting Britain and France has been an engineering holy grail since the early 19th century. The first attempt at a tunnel excavation began in 1880, but the project was abandoned soon after and workings lay dormant for a hundred years.

In 1988, international treaties were signed and once more excavation work began in earnest.

At 50km from Kent to Normandy, with a full 39km passing 40m under the English Channel seabed, the Channel Tunnel is the world’s longest marine subway.

Eleven tunnel boring machines, working from both sides of the Channel, cut through chalk marl to construct two railtunnels and a service tunnel. The vehicle shuttle terminals are at Cheriton (part of Folkestone) and Coquelles, and are connected to the British and French motorways (M20 and A16 respectively).

Tunnelling commenced in 1988 , and the tunnel began operating in 1994. In 1985 prices, the total construction cost was £4.650 billion (equivalent to £11 billion today), an 80% cost overrun. At the peak of construction 15,000 people were employed with daily expenditure over £3 million. Ten workers, eight of them British, were killed during construction between 1987 and 1993, most in the first few months of boring.

Download National Geographic Mega Structure "The Channel Tunnel "


Wednesday, February 16, 2011


To create a river hydraulics application with HEC-RAS,you work with projects. A project is a collection files that are used to build a model.This chapter describes projects and how you build and manage them.


  1. Understanding Projects
  2. Elements of a Project
  3. Creating,Opening,Saving,Renaming and Deleting Projects
  4. Project Options
To read more download "Working with Project in HEC-RAS


Steady Flow

Performing Steady Flow Analysis in HEC RAS
This post includes the procedure of calculating steady flow water surface profile.
This chapter is divided into two parts.The first part discusses how to enter steady fow data and boundary conditions.The second part discusses how to develop a plan and perform the calculations.

  1. Entering and Editing Steady Flow Data
  2. Performing Steady Flow Calculations
Entering and Editing Steady Flow Data
Once all of the geometric data are entered,the modeler can then enter any steady flow data that are required.To bring up the steady flow data editor,select Steady Flow Data from Edit menu on the HEC-RAS main window.The steady flow data editor should appear.

Steady Flow Data
The user is required to enter the following information: the number of profiles to be calculated;the peak flow data(at least one flow for every river reach and every profile); and any required boundary conditions.

To read more download this ebook


Fluid Mechanics

Dimensional Analysis
In engineering the application of fluid mechanics in designs make much of the use of empirical results from a lot of experiments. This data is often difficult to present in a readable form. Even from graphs it may be difficult to interpret. Dimensional analysis provides a strategy for choosing relevant data and how it should be presented.
This is a useful technique in all experimentally based areas of engineering. If it is possible to identify the factors involved in a physical situation, dimensional analysis can form a relationship between them. The resulting expressions may not at first sight appear rigorous but these qualitative results converted to quantitative forms can be used to obtain any unknown factors from experimental analysis.

Dimensions and units
Any physical situation can be described by certain familiar properties e.g. length, velocity, area, volume, acceleration etc. These are all known as dimensions. Of course dimensions are of no use without a magnitude being attached. We must know more than that something has a length. It must also have a standardised unit - such as a meter, a foot, a yard etc.Dimensions are properties which can be measured. Units are the standard elements we use to quantify these dimensions.
In dimensional analysis we are only concerned with the nature of the dimension i.e. its quality not its quantity. The following common abbreviation are used:

To read more Download Dimensional analysis in fluid mechanics ebook


Hydraulics Modeling

A physical model is a scaled representation of a hydraulic flow situation. Both the
boundary conditions (e.g. channel bed, sidewalls), the upstream flow conditions
and the flow field must be scaled in an appropriate manner.
Physical hydraulic models are commonly used during design stages to optimize a
structure and to ensure a safe operation of the structure. They have an important
further role to assist non-engineering people during the `decision-making' process.
A hydraulic model may help the decision-makers to visualize and to picture the
flow field, before selecting a `suitable' design.
In civil engineering applications, a physical hydraulic model is usually a smaller-
size representation of the prototype (i.e. the full-scale structure) (e.g. Fig. 14.2).
Other applications of model studies (e.g. water treatment plant, flotation column)
may require the use of models larger than the prototype. In any case the model is
investigated in a laboratory under controlled conditions.
Hydraulic modeling cannot be disassociated from the basic theory of fluid
mechanics. To be eefficient and useful, experimental investigations require theoretical
guidance which derives primarily from the basic principles (see Chapter 13) and the
theory of similarity (see the next subsection).
In the present section, we will consider the physical modeling of hydraulic flows:
i.e. the use of laboratory models (with controlled flow conditions) to predict the
behavior of prototype flow situations.
In a physical model, the flow conditions are said to be similar to those in the prototype
if the model displays similarity of form (geometric similarity), similarity of motion
(kinematic similarity) and similarity of forces (dynamic similarity)...

To read more download this lecture


Saturday, February 12, 2011




Friday, February 11, 2011

HEC RAS Import Export File for Geospatial Data

HEC RAS has introduced 3D geometry for the description of river networks and cross sections.This capability makes it possible to import channel geometry of from CAD or GIS programs without conversion from real world coordinates to station elevation descriptions for the cross sections.Similarly water surface elevations calculated at cross sections can be exported to CAD and GIS where they can be used to create models surfaces for inundation mapping.
Download this chapter


Introduction to HECRAS

Hydrologic Ebngineering Center's River Analysis System(HEC-RAS) allows you to perform one dimensional steady and unsteady flow hyrdraulics. Future Versions support sediment transport calculations.HEC RAS supports one dimensional steady and unsteady flow,water surface profile calculations.
HEC RAS is an itegrated system of software,designed for interactive use in a multi tasking multi user network environment.The system is comprised of a graphical user interface,separate hydraulic analysis components,data storage and management capabilities,graphics and reporting facilites..............
Download This Chapter


Thursday, February 10, 2011

Mechanics of Solids and Strength of Materials solutions to problems

Solid Mechanics Problems solutions

Download Mechanics of Solid Soloution to Problems Solved by Me (Engr.Masaud Akhter)


Wednesday, February 2, 2011

Estimation of Water Tank

Quantity Estimation of Water Tank
Click here to Download Water Tank Estimation Spreadsheet


Costs Estimating

Estimation of Building/Building Quantity and Cost Estimation
Click here to download Building Quantity Estimation



Hydrologic Ebngineering Center's River Analysis System(HEC-RAS) allows you to perform one dimensional steady and unsteady flow hyrdraulics. Future Versions support sediment transport calculations.HEC RAS supports one dimensional steady and unsteady flow,water surface profile calculations.
HEC RAS is an itegrated system of software,designed for interactive use in a multi tasking multi user network environment.The system is comprised of a graphical user interface,separate hydraulic analysis components,data storage and management capabilities,graphics and reporting facilites..............
This Presentation Contains the following chpaters
Getting Started
Entering Cross Section Data
Notes on Cross Section Data
Entering Flow Data
Performing Hydraulic Computations
Low Flow Bridge Modeling
High Flow Bridge Modeling
Adding The Bridge

Download HEC RAS Lectures and Presentations


Thursday, January 27, 2011

Free Cost Estimation Spreadsheet Download

Cost Estimation Spreadsheet download
Download Coloumn estimation spreadsheet


Quantity Estimation of Compound Wall

Download spreadsheet of compound wall estimation
click here to download


Building Estimating

Building Estimating
Download Building Estimate Spreadsheet

Click here to download


Friday, January 14, 2011

Structural Designing

Structural Designing
Structural Spreadsheets containing following Designs

  1. beam Analysis
  2. slab 2way calc
  3. Beam Singly Reinforced.
  4. beam
  5. BeamBox
  6. Braced Column + Strip pad + Isolated footing + Combined footing + Strip beam
  7. Brick Retaining wall
  8. ddm
  9. Deflection
  10. Equivalent Lateral Force Procedure (IBC 2000)
  11. Equivalent Lateral Force Procedure (UBC 97)
  12. Finite Element Beam
  13. Footing
  14. Retaining Wall
  15. Seismic-IBC
  16. Seismic-UBC
  17. Short Column Designer
  18. Super Structure Design of Bridge
  19. SAP2000 Lateral Load Manual
  20. Two Way Slab
  21. WallLateralForce-IBC
  22. WallLateralForce-UBC
  23. Wind-UBC

this link also contains the following along with above analysis and design spreadsheets
Building Engineering ebook
  1. IBC 2003
  2. 2d Frame Analysis
  3. Wind load Lccture
  4. Tall Buildings Documentry
and much more informative civil engineering ebooks and lectures

Download Structural Spreadsheets


Structural Spreadsheets

Structural spreadsheets
Civil Engineering Spreadsheets of the following structures.

  1. BasementColumn
  2. BasementConcreteWall
  3. BasementMasonryWall
  4. BoundarySpringGenerator
  5. BraceGradeBeam
  6. CircularFooting
  7. CombinedFooting
  8. ConcretePier
  9. ConcretePile
  10. ConcreteRetainingWall
  11. ConventionalSlabOnGrade
  12. DeepFooting
  13. EccentricFooting
  14. FixedMomentCondition
  15. Flagpole
  16. FloodWay
  17. FootingAtPiping
  18. FreeStandingWall
  19. GradeBeam
  20. IrregularFootingSoilPressure
  21. LateralEarthPressure
  22. Masonry-Concrete-RetainingWall
  23. MasonryRetainingWall
  24. MRF-GradeBeam(2)
  25. PAD
  26. PileCapBalancedLoads
  27. PileCaps
  28. PlainConcreteFooting
  29. PT-SlabOnGround
  30. RestrainedRetainingWall
  31. RetainingWall-DSA-OSHPD
  32. Shoring
  33. StudBearingWallFooting
  34. TankFooting
  35. TemporaryFootingforRectangularTank
  36. UnderGroundWell
  37. WallFooting
  38. WS Seis Ver 3.0
Download Structural Spreadhseets


Saturday, January 8, 2011

Attention please

This site is under maintenance and will get back soon with more materials... if you do not find your desired data then kindly visit after a week .
thanks for your cooperation.

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