(1) A standard railing shall consist of top rail, intermediate rail, and posts, and shall have a vertical height of 42 inches nominal from upper surface of top rail to floor, platform, runway, or ramp level. Which of the following … Continue reading →

Guide rail versus guard rail According to the US Federal Highway Administration, “The terms guardrail and guiderail are synonymous, and are used in different regions around the country.” Guide rail and guard rail are intended to steer and “guide” vehicles … Continue reading →

The cross profile of a river shows how the width and depth of the river valley and channel change as you travel downstream. Near the source of a river there is more vertical erosion as the river flows downhill, using … Continue reading →

How fast did pirate ships go mph? With an average distance of approximately 3,000 miles, this equates to a range of about 100 to 140 miles per day, or an average speed over the ground of about 4 to 6 … Continue reading →

Sidelights: These red and green lights are called sidelights (also called combination lights) because they are visible to another vessel approaching from the side or head-on. The red light indicates a vessel’s port (left) side; the green indicates a vessel’s … Continue reading →

Where do NPS or DN stand for? Diameter Nominal DN (mm) Nominal Pipe Size (inches) Outside diameter (OD) inches (mm) 80 3 3.500 in (88.90 mm) 100 4 4.500 in (114.30 mm) 150 6 6.625 in (168.27 mm) 200 8 … Continue reading →

60 mm wide tires provide maximum Balloonbike comfort. But also the lighter weight 50 mm wide tires had double the air volume of a standard 37 mm tire. What size are balloon tires? Balloon tires usually come in a 26″x2. … Continue reading →

Can we change wheels of trolley? Our suitcase repair services cover most of the common problems you face with suitcases before you travel. We do trolley wheels change, handle replacement, zip, and runner replacement, lock change and even small patchworks … Continue reading →

Steel axles are forged and heat treated via induction coils. By swiftly drawing the material through the electromagnetic coil, the heating and cooling of the material can be carefully controlled. In this way, engineers produce axle shafts featuring: Hard, solid … Continue reading →

The wheel and axle is a type of simple machine used to make tasks easier in terms of manipulating force by applying the concept of mechanical advantage. The wheel and axle consists of a round disk, known as a wheel, … Continue reading →

Handrails are attached to newels using screws, nails or rail bolts. Generally, these rail systems are easier to assemble and can be less expensive when used with common newel posts. There are two basic types of handrail systems. “Post to … Continue reading →

How do you get balloons to stick to the ceiling? Blow up your balloons with air and attach a 2 ft long piece of fishing line to each of them. Then tie them to the long string of fishing line. … Continue reading →

Shells are hollow, with a charge of gunpowder inside. The powder is ignited by a timed fuse, which lights when the gun is fired. Shells are generally used to set fires. Rifled cannon fire cylidrical, bullet-shaped projectiles. How did old … Continue reading →

The difference between canon and cannon is irregularly slight. Both are nouns; both are pronounced the same; and both refrain from using an “s” at the end of the word. So it really does come down to whether the word … Continue reading →

Canon (one “n”) refers to a collection of rules or texts that are considered to be authoritative. Shakespeare and Chaucer are part of the canon of Western literature, so you might read their work in an English class. What are … Continue reading →