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Monday, March 29, 2010

Structural Steel Weight Calculation

Dears,

Do you know how to calculate structural steel weights?It is very easy

If it is a Rolled section like Beam, Channel, Rod, Square, Angles & Flats
WEIGHT = LENGTH X UNIT WEIGHT

If it is a Plate OR Sheet
WEIGHT = LENGTH X WIDTH X THICKNESS X 7.85

UOM (Unit Of Measurement) for Length and width are Meter , For thickness it is in MM (Milli Meter)

7.85 is Specific Gravity of Steel

Eaxmple-1
If ISMB-600 length is 12550mm
Weight = 12550/1000 * 123.1 (Unit weigt of ISMB-600 per Meter is 123.00Kg/Meter)
Weight=1543.65Kg

Example-2
If Plate 16mm thickness, 1250mm width, 12500mm length
Weight= 1250/1000*12500/1000*16*7.85
Weight=1962.5 Kg

The same formuls can be applied for other materials also, Specific gravity should be used accordingly.

Tuesday, March 23, 2010

Water Properties


This is in continuation with my previous post on World Water Day

Drinking water standards

For Physical and chemical properties of  drinking water and acceptable limit please refer below tables


Table-1

Click on Picture to enlarge
Table-2

Monday, March 22, 2010

World Water Day


World Water Day, celebrated annually on March 22, was established by the United Nations in 1992.






An international day to celebrate freshwater was recommended at the 1992 United Nations Conference on Environment and Development (UNCED). The United Nations General Assembly responded by designating 22 March 1993 as the first World Water Day.



UN-Water is dedicating World Water Day 2010 to the theme of water quality “Clean water for a Healthy World “



Each year, World Water Day highlights a specific aspect of freshwater. Please note that a brief overview of the different themes that have been the focus of World Water Day celebrations.
2009: Transboundary Waters (Shared Water - Shared Opportunities)
2008: Sanitation (coincided with the International Year of Sanitation)
2007: Coping with Water Scarcity
2006: Water and Culture
2005: Water for Life
2004: Water and Disasters
2003: Water for Future
2002: Water for Development
2001: Water for Health
2000: Water for the Twenty-first Century
1999: Everyone Lives Downstream
1998: Ground Water – The invisible Resource
1997: The World’s Water, Is There Enough
1996: Water for Thirsty Cities
1995: Women & Water
1994: Caring for our Water Resources is Everyone’s Business

Worldwide water quality is declining mainly due to human activities. Increasing population growth, rapid urbanization, discharge of new pathogens and new chemicals from industries and invasive species are key factors that contribute to the deterioration of water quality.

Sufficient quality of water is critical to ensure a healthy environment and human health. The basic requirement per person per day is 20 to 40 liters of water free from harmful contaminants and pathogens for the purposes of drinking and sanitation, rising to 50 liters when bathing and kitchen needs are considered.

Source. www.unwater.org

Sunday, March 21, 2010

Steel Section Detail

During the discussions about my previous post STEEL SECTION one of my friend asked which one is web and Flange. To clarify the same please see the picture below


h = Depth of Section (Web)
b = Width of Section (Flange)
s = Thickness of Web
t = Thickness of Flange
d = Depth between Fillets
r = Root Radius

Sunday, March 7, 2010

STEEL SECTIONS

This article is for beginners of this construction industry. Being a Construction Engineer / Structural Engineer we have to work with different type of steel section. Different type of steel sections are listed below and also mentioned how it designated along with examples.


BEAM SECTIONS








1. ISJB - Indian Standard Junior Beams
2. ISLB - Indian Standard Light Weight Beams
3. ISMB - Indian Standard Medium Weight Beams
4. ISWB - Indian Standard Wide Flange Beams
5. ISHB - Indian Standard Heavy Weight Beams
Beams will be designated by Type - Web size X Flange size (Eg. ISMB 600X210)

PARALLEL FLANGE BEAMS







1. NPB - Indian Standard Narrow Parallel Flange Beams.
2. WPB - Indian Standard Wide Parallel Flange Beams
3. UB - Universal Beams4. UC - Universal Columns
Parallel Flange Beams will be designated by Type - Web size X Flange size X Unit Weight (Eg. UB 610X229X125)

ANGLES





1. ISA Indian Standard Equal Angle
2. ISUA Indian Standard Un Equal Angle
Angles will be designated by Type – Face1 size X Face2 size X Thickness (Eg. ISA 100X100X6)
CHANNELS








1. ISJC Indian Standard Junior Channel
2. ISLC Indian Standard Light Weight Channel
3. ISMC Indian Standard Medium Weight Channel
Channels will be designated by Type –Web size X Flange size (Eg. ISMC 100X50)
RAILS











1. ISCR Indian Standard Crane Rail
2. ISHR Indian Standard Heavy Rail
Rails will be designated by Type –Head size (Eg. ISCR 100)
PLATES









Plates will be designated by Thickness (Eg. Plate 10)

FLATS










Flats will be designated by Width X Thickness (Eg. Flat 100X6)
ROUND BAR








ISRO Indian Standard Round
Round Bar will be designated by Diameter (Eg. ISRO 50)
HEXAGON BAR








Hex.Bar will be designated by one side size (Eg. Hex. Bar 50)
SQUARE BAR









Square Bar will be designated by one side size (Eg. Sq. Bar 100)
SQUARE HOLLOW BAR









Square Hollow bar will be designated by Sq.Bar– Face1 size X Face size2 X Thickness (Eg. Sq.Bar 50X50X2)
RECTANGULAR HOLLOW SECTION








Rectangular Hollow bar will be designated by Rect. Bar– Face1 size X Face size2 X Thickness (Eg.Rect. Sq.Bar 100X50X2)

Hope this information may useful to you. More details like unit weight and other properties will follow my next articles.
Wish you all the best.

Wednesday, March 3, 2010

LPG Gas Cylinder's Expirey Date

WISH YOU A HAPPY NATIONAL SAFETY DAY (4th MARCH 2010)


Have U ever heard about LPG gas cylinder's expiry date....!!

Expired Cylinders are not safe for use and may cause accidents. In this regard please be cautious at the time of accepting any LPG cylinder from the Agency.

Here is how we can check the expiry of LPG cylinders:

On one of three side stems of the cylinder, the expiry date is coded alpha numerically as follows A or B or C or D and some two digit number following this e.g. D06.

The alphabets stand for quarters -

1. A for March (First Qtr),

2. B for June (Second Qtr),

3. C for Sept (Third Qtr),

4. D for December (Fourth Qtr).

The digits stand for the year till it is valid.

For Example Please see the Image below

Expired Cylinder Image











Hence D06 would mean Fourth quarter of 2006. Please Return Back the Cylinder that you get with an Expired Date, they are prone to Leak and other Hazardous accidents .......


Valid Cylinder Image












The second example with D13 allows the cylinder to be in use until December2013.

Tuesday, March 2, 2010

Introduction

I am very happy today.

Self opened a Blog to discuss about Construction Works & Structural Engineering. Basic concept to open this Blog is to share the Engineering Information’s and enhance the computer knowledge to others.

When I recall about my initial periods during construction site self struggled to get the information from seniors. Some times they will guide us wrongly and purposefully (Afterwards I Understood that those mistakes we should not repeat in future). To avoid such a situation self started collecting the information as much as possible and sharing the information with my subordinates and new comers of this industry.

From this blog self would like to share the Technical data's. I Hope that all of you will get the benefit.

Bye, Have a Nice Day.

Thank You

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