1. Low Slope Roof Applications.
- Employees engaged in work activities on low slopes roofs, with unprotected sides and edges six feet (1.8m) or more
SAFEWAY IN ROOFING WORK
1. Low Slope Roof Applications.
PERSONNEL LIFTS/HOISTING DEVICE
- Aerial Lifts (JLG, Scissors, Snorkel, Etc.). Personnel riding in or working from these lifts must secure their safety lanyard to the lift basket at all times.Spiders and Ski-Climbers. Personnel riding in or working from these hoisting devices shall each be provided an independent lifeline and rope grab.
STRUCTURAL STEEL ERECTION
Personnel erecting skeletal steel structures shall maintain 100% fall prevention/protection through the use of personal fall protection systems, retractable lifelines, connectors toggles, and aerial lifts (JLG, Snorkel, etc.)
- A full body harness and shock absorbing lanyard system shall be worn and secured where there is a fall exposure of six feet (1.6m) or more. (Site requirements say “if a fall hazard exist”)
- If the work is located on a permanent structure and no fall potential is created by the work or by the condition of the structure, full body harnesses are not required.
SCAFFOLDING/TEMPORARY WORK PLATFORMS
Every effort shall be made to ensure all temporary platforms/walkways are equipped with solid decking free of openings and standards guard rail systems.
- Personnel working or traveling on temporary elevated platforms shall wear an approved safety harness/lanyard system at all times.
Fall Prevention & Protection Focus
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| Fall |
OBJECTIVE: 100% fall prevention/protection awareness for all personnel exposed to potential falls. Improve efficiency by planning fall protection and save time lost during execution. Lack of knowledge of the quality in safety itself leads to confusion among performing crew, therefore a plan improves productivity.
- SCAFFOLDING/TEMPORARY WORK PLATFORMS
- Full Body Harness/Shock Absorbing Lanyards
- REINFORCEMENT STEEL/CONCRETE FORM WORK
- STRUCTURAL STEEL ERECTION
- PERSONNEL LIFTS/HOISTING DEVICE
- ROOFING
SAFE WAY up and down the LADDER
In the construction of a building project in particular did not escape from penggunaa scaffolding and ladders. The following tips & tricks in a safe way up and down stairs safely. because safety is key.
Walking up and down the stairs is a job that is not entirely safe. More than ¼ injuries experienced by operators of equipment due to current activity equipment up or down the stairs. At the time of climbing or descending stairs like an equipment or workplace safely be sure to always pay attention to three contacts with the ladder. This means make sure at least two hands and one foot or one hand two feet always contact with the ladder. Maintain three points of contact on the ladder to help us avoid the danger of slipping or falling.
Welding Electrode
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| Welding Electrode |
Electrode welding
Most of the SMAW welding electrode coated by a layer of flux, which serves as a gas-forming fluid that protects the metal from the surrounding air contamination. In addition fluk also useful for forming weld slag that also serve to protect the weld from the air surrounding fluid. Electrode layer is a mixture of chemicals that komposisisnya accordance with the requirements of welding. According to the AWS (American Welding Society) electrodes are classified with the letter E and followed by four or five digits as follows E xxxx (x). The first two digits or three digits indicate tensile strength welds three digits indicate
tensile strength of more than 100,000 psi, while two digits indicate the weld tensile strength of less than 100,000 psi. As an example electrode E 6013 has a tensile strength of 60,000 psi (42 Kg/mm2). While the third or fourth digit figure for a greater tensile strength 100,000 psi (70 Kg/mm2) next digit position of the welding point, if the score 1 means for every posisi.pengelasan, number 2 means the weld flat or horizonta l and figure 3 shows for welding flat course. The last digit indicates the type of chemical mixture of the electrode layer.
AC Welding Machine / Welding Rectifire
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| AC Welding Machine |
Electrical machinery and classified AC welding machine DC welding machine, welding machine AC is usually a welding transformer, welding machines sedangkam DC transformer apart or equipped with a rectifier diode (Changer alternating current into direct current) motor drive typically uses either diesel or petrol motors and electric motors. AC welding machine that uses a transformer or welding transformer.
Currently widely used welding machines DC because DC has
several advantages of the AC welding machines, such as stable arc, polarity can be set.
Las DCSP (Direct Current Straight Polarity) or Las Straight Polarity.
If the base material or materials to be welded is connected to the positive pole (+) and elektrodenya connected with the negative pole (-) in the way of a DC welding machine is called straight polarity welding or DCSP.
In this way the electric arc moves from the electrode to the base material so that the collision of electrons in the material base that resulted in 2 / 3 heat in the base material and the third heat in the electrode. This will result in melting of basic material more than elektrodenya so that the results have deep penetration welding, so that both are used in welding a slow and narrow weld bead and for a thick plate. Las DCRP (Direct Current Reversed Polarity) or Las Polarity behind. With the welding process in this way the basic material connected with the negative pole (-) and elektrodenya connected with the positive pole (+) of DC welding machine, and DCRP so-called electric arc moving from basic materials to the electrode and the collision of electrons in the electrode resulting in 2 / 3 heat at the electrode and the third heat in the base material.
This will produce more so that the melting electrode welds have shallow penetration, and both are used in welding of thin plates with a width of weld bead.
Welding Las AC (alternating current) or Las Las alternating electric current alternating current there is no positive and negative poles (two both the same) and therefore the inverted penyambungannya behind the results remain the same. Each pole will receive 50% heat, resulting in more normal penetration.
SMAW WELDING
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| SMAW |
SMAW WELDING
SMAW welding is a technique by using an electric current flows and electrode arc-shaped webbed. Other types of arc welding with an electric current is submerged arc welding SAW, gas metal arc welding GMAW-MIG, gas tungsten arc welding and plasmaarc G. In SMAW welding gas occurs when the electrode terselaput penyelimut it melts, so the process is not required pressure / pressure inert gas to displace the oxygen or air can cause corrosion or bubbles in the weld-weld. Prose welding occurs because the electric current flowing between the electrodes and welding material forming the heat so it can reach 3000 ° C, thus making the electrode and the material to be welded to melt. Based on its current type, welding is divided into AC and DC current, which distinguished DC Straight polarity-polarity of the direct and reverse polarity - polarity reversed. Welding machine is being divided into two types, namely constant current - constant voltage and current fixed - fixed voltage, dimanapada any arc welding electrical current in case of an enlarged bow will lower and raise the voltage and current in a shortened arc will improve the flow and lowering the voltage.
To get a good weld should:
- using appropriate electrodes
- appropriate type of current
- polarity type is right for DC current
- avoid welding the left-right movement during welding
- short form of the arc current, welding do a steady and orderly
- the rate of welding electrodes in accordance with the speed of the melt.
The problems that often arise in the arc welding current is:
- electrode freezes / stops welding
- form an ugly seam welding
- arc welding current is bad because it expands
- Moderate membrane electrode / flux is generally made dariserat
- wood / cellulose
- titanium oxide
- + titanium base compound
- Mn + Fe + Si
- Iron oxide
- CaCO3, which will form jebnis-type electrode in the form type: E, R, ER, EC, EW, B, RB, RG and F.
Selection of electrodes is based on:
- properties of the materials to be welded
- welding position
- connection type
- number of welding
- density welding connection
- type of current available.
Welding
Welding is among one of the grafting technique to melt some metals with the parent metal and filler metal with or without pressure and with or without metal enhancer and generate connections continue.
The scope of the use of welding techniques in the construction is very broad, covering shipbuilding, bridges, steel frame, pressure vessels, pipes rapidly, pipelines and so on.
Fishing Tips for Beginners
There are many kinds of fishing equipments in stores, numerous fishing methods in books, and fishing advices online. To make it all simple, here are the basic things you need to know for your first time fishing adventure.
How to create flash banner
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This time I wanted to share how I create a flash banner for free with the result that does not disappoint. You need to know that all of this I learned from browsing the results on Google.
To begin, we use the services of a website gifninja name. As an initial step to prepare just2 images the same size. Or at least that in the not too distant gandengnkan. Thus formed can be a good image.
To prepare the image can use photoshop or microsoft paint program. The important thing is make 2 images with the theme up to you.
Make CHM Ebook From Word File
Why bother why the files the documents we have made all the ebook? The answer is to make it more readable, easier to search for topics, more easy to carry where alias easily removed without the capacity of files that are too large.
This paper started when I was frantically looking for software that can create an eBook. Chm to originate from multiple files. Doc, since most existing software eBooks can only compile the files from the html format. Immediately, without further ado I share tips trick to make ebook
HOW TO MAKE ANIMATED BANNER WITH PHOTOSHOP
Animated GIF Banner in the form of frequently used on a web / blog to enhance your promotional display or for interactive media. How to make a banner nimasi with Photoshop?
Consideration of using Photoshop to create animated GIFs because the software is already familiar and relatively easy to use every one.
How to calculating required welding wire ?
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| Welding Process |
One of our task in mechanical work is Welding. Good enggineer should known how to prepare his work. In this case is calculating welding rod. Before the enggineer calculating welding rod, enggineer must be understand about :
a. Techical Drawing,
b. Welding code.
Ok, lets us started to expalin how to calculating welding rod/wire requirement from the simple welding.
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