Know About Aerial Lift

The Duluth aerial lift bridge is located across the canal that is the main entry to the Duluth harbor from Lake Superior.it is a major landmark in the port city of Duluth, Minnesota

The design of this bridge was the winner design from John Alexander Low Waddell who drew up plans for vertically lift bridge. when Duluth residents dug through the narrow slit of land known as Minnesota Point to create a harbor at the head of the Great Lakes

As suitable as the shipping canal was for the city, it left citizens on the Point cut off from the mainland. In 1892 Duluth held a competition for a bridge design that would enable residents to cross without interrupting traffic in the shipping lane. The winning design came from  John Alexander Low Waddell who drew up plans for a high-rise vertical lift bridge which was the first of this type

But the Duluth project was cancelled before construction began and Waddell’s design was later built in Chicago. In 1905 Duluth finally built its bridge. When it was completed in 1905, the Aerial Bridge's gondola had a capacity of 60 short tons and could carry 350 people plus wagons, streetcars, or automobiles

The bridge can be raised to its full height in almost 3 minutes, and goes up 25 to 30 times daily during busy shipping season. The span is about 390 feet(120 m). As ships pass, there is a customary horn-blowing sequence which is copied back. Long-short-long-short means to raise the bridge, and Long-short-short is a friendly salute. Its language between the bridge and the coming ship

What Is Air Compressor?

The use of air compression for construction tools is very convenient because they  normally use the energy of compressed air as opposed to electricity. Of course, when using a pneumatic
power tool, you will need an air compressor

Most air compressors run on diesel, and basic maintenance checks should always be conducted before operation. The power of compressed air can be dangerous, and caution must always be taken when an air compressor is in use. There are strict safety rules to abide by when using pneumatic power tools

The air hose must be checked for cracks or holes, and if anything suspicious is found, the hose must be replaced immediately. Before you connect the air hose to the air compression outlet, open the valve. After doing this connect the tool’s hose to the outlet and then ensure that the hose is clear of any water or foreign objects before you connect the hose to the power tool

Air breakers are designed for general demolition, and are probably one of the most popular pneumatic power tools on the market. An air breaker will be used to break medium and hard materials such as concrete and  asphalt. Prior to operation of an air breaker, you must always  check that all parts are securely fastened

A rock drill is probably another popular pneumatic power tool you will come across if you are using an air compressor to power  your construction work. as example for that, the shotcrete application and also the soil nailing uses the air compressor power to drive the piles into the soil

Rock Drill

rock drill

A rock driller is a piece of equipment used for drilling the rocks. A rock drill is designed for heavier jobs such as bench and secondary drilling. 

there are so many reasons to drill rocks, such as soil nailing which means reinforcing the retaining walls to the rocky side by piles embedded into the rock, aslo this is used for different construction purposes like footing  lying and fixing equipment. and can also be used for drilling for smooth
blasting

The teeth of the rock driller have to be very sharp to cut the rocks without being damaged, and for that purpose, the alloy used for making these teeth consists of steel and  Powder of diamond. the driller arm is fitted to powering system which is carried on crawler or wheeled vehicle and often is powered by hydraulic system. There are some rock drills that can drill holes up to 6 meters deep

Motor Grader usage

Motor grader is construction equipment that is used in flatting and accurate finishing of the final outlets of surfaces before putting the pavement layer. It comes in all sizes and types. This equipment has a blade between the front and rear parts. The blade is controlled either mechanically or hydraulically, the blade can be extended from any side of the grader, both ends of the blade can also be raised or lowered depending on the desired job

Due to weather and using conditions, roads get damaged and became in need for repaving. Here comes the role of motor grader as it flattens the road before the pavement layer is laid. Also they are used in removing falling rocks from roads in cliffs areas 

Motor graders can do more than one job. So they can replace several other equipment .and used in road paving stage as it spread the material over the road area in equal. As a result of all that companies prefer using motor grader

how to drive amotor grader

Driving motor grader isn't so hard. This heavy equipment have a lot of controllers to handle the big power and use it in optimum way to get the best results. But these controllers represented in joysticks and some buttons are easy to remember and also sensitive as it responds immediately when it moved or pressed. 

Not many people have a chance of driving a motor grader but who knows what can happen. It's so fun to drive such a huge equipment like motor grader but also very dangerous because if it got out of control, it can cause a serious damage. So for first time you can get help from  professional driver. And for more safety this must be done in open area. The next video show simple learning to driving  a motor grader so enjoy it