In 2001, two cruise ships encountered waves that broke bridge windows. In 1998, Cunard’s Queen Elizabeth 2 was struck by 90-foot wave. The captain detected it on radar in time to turn the ship to face it head on, so … Continue reading →

Aluminum Hull Repairs and More The solution to this problem is fairly simple and may be fixed at home using just a few tools and know-how. Can you restore pitted aluminum? The problem with aluminum wheels is that they are … Continue reading →

The first full-scale working railway steam locomotive was built in the United Kingdom in 1804 by Richard Trevithick, a British engineer born in Cornwall. This used high-pressure steam to drive the engine by one power stroke. The transmission system employed … Continue reading →

The steam engine and locomotive propelled countless other industries such as driving bellows and rollers, spinning machines, and weaving machines. And, for the first time in history, people had the ability to quickly and cheaply move to big cities to … Continue reading →

This refers to the diameter of a pipe. Some pipes are measured base on their outside diameter, or O.D. Others are measured by their interior diameter, or I.D. Do you measure the OD or ID of pipe? All plastic pipe … Continue reading →

Svend Aage Rasmussen. The founder of DAV NORDIC, Master Builder, Svend Aage Rasmussen invented the crash barrier in the early 30s. The idea for the invention came a day when Svend Aage Rasmussen was at the construction site and a … Continue reading →

Interpersonal barriers are any negative patterns of behavior that hinder you from communicating or discourage others from communicating with you. In many cases, miscommunication is the product of unintentional verbal or non-verbal cues. What are interpersonal barriers examples? For instance, … Continue reading →

They’re called ‘monitoring tubes‘ and have been put down for two weeks to monitor traffic flows – ie how many vehicles pass those points at various times of the day. The information they gather will be used “to assist with … Continue reading →

If you see red reflectors on the lines on the edge of the road, you are on the wrong freeway ramp. Pull over immediately! Red reflectors always mean you are facing traffic the wrong way and could have a head-on … Continue reading →

The bending stress is computed for the rail by the equation Sb = Mc/I, where Sb is the bending stress in pounds per square inch, M is the maximum bending moment in pound-inches, I is the moment of inertia of … Continue reading →

eight feet. Chinook, Coho, and Sockeye can jump as high as eight feet. Chum and pink salmon usually jump no more than three feet. How high can a salmon jump? Salmon negotiate waterfalls and rapids by leaping or jumping. They … Continue reading →

Area 5 – Bristol Bay Gillnetting is the popular method of fishing out of Bristol Bay with deckhands averaging salaries ranging from $7,000 – $15,000. How much does a deckhand make on a salmon boat? According to the Alaska Fishing … Continue reading →

“Red, Right, Returning” You may have heard the phrase, “Red, Right, Returning.” This expression refers to the fact that when returning (entering a channel from the open sea or proceeding upstream), a boater must keep the red Aids on the … Continue reading →

of a diameter is also called the diameter. In this sense one speaks of the diameter rather than a diameter (which refers to the line segment itself), because all diameters of a circle or sphere have the same length, this … Continue reading →

To measure the inner diameter of a bearing, insert the outer anvils of your vernier caliper into the bore and open the caliper until it meets the inner bore of the bearing. Now, you can read the value on the … Continue reading →