Civil Engineering

The Mission (purpose) of battleships was to fight a decisive fleet action. Only ONCE did they ever complete that purpose; at the Battle of tsushima on May 27, 1905. They failed to fight a decisive sea action in WW1; and they were replaced by the aircraft carrier in WW2. The carriers fought decisive duels in WW2, not the battleships. The ONE time they were used, as designed by the architects & engineers, did result in the construction of HMS Dreadnaught, which was launched in 1906; thus starting the naval arms race which resulted in WW1.

I think you mean beam W30x150; where 30 is the nominal depth in inches, and 150 is the weight in pounds per linear foot. To answer the question about the compression strength, it is all relative to the type of steel, the length of the structural member, and how it is fixed at either end. Is it A-36 or A-50 steel; is it 10 ft. long, or 20 ft. long; is it pinned (bolted) or fixed (welded)? These unknown variables must be addressed before this theoretical value can be calculated.

A catapult is made out of wood

The binder in concrete is usually cement. Cement causes the aggregate and sand to bind together mechanically and harden to make a solid surface.

Asphalt must be liquified before it can be pumped through pipes, mixed with stone aggregates, or sprayed through nozzles. Heating is one way to liquify asphalt for construction purposes. But when asphalt cools, it becomes a semisolid material. There are other ways to liquify asphalt for construction operations. One way is to emulsify it with an emulsifying agent and water. In the emulsification process, warm asphalt is mechanically milled into very very small globules (5-10 microns and smaller) and dispersed into the water treated with emulsigying agent. The emulsifying agent keeps the asphalt globules apart from one another and suspended in the water which allows the asphalt to be used at room and cold temperatures. After the emulsified asphalt is sprayed onto a surface or mixed with aggregates the water evaporates and leaves only the asphalt residue behind to cement the aggregates together or waterproof the surface it was sprayed on.

In 1872, the "St.E.G" factories in Resita manufactured for the European railways: 16 crane travelling on rails, 18 water tower tanks, 110 plates for the return of the railway engine, 514 switch double crossing frogs, 793 cushions.

mass = density * volume

weight = mass * acceleration due to gravity

W = (2400 kg/m^3)*(1 m^3)*(9.8 m/s^2) = 23520 Newtons

convert to pounds

23520 Newtons = 5287.5 lbs

(note 1 lb is approximately 4.448 Newtons)

Cc = (D30)^2 / (D10 * D60) Where: * D60 is the particle-size diameter for which 60 percent of the

sample was finer, and, * D30 is the particle-size diameter for which 30 percent of the

sample was finer. * D10 is the particle-size diameter for which 10 percent of the

sample was finer.

When a building in an earthquake leans over far enough the force of gravity starts to act on the portion offset from the initial position of the building pulling it down further. That extra pull is called a p-delta effect

The P-delta effect also refers to the second order (i.e. non-linear) effect of forces on the structure. As a results of the displcement, the stiffness changes, which in turn changes the force to be different than the linear analysis.

In a linear analysis, a stiffness matrix K can be defined such that

d = K*f

where f is the vector of forces and d is the vector of displacements.

In a P-delta analysis, there are additional non-linear effects, whether based on iteration or an closed for m solution.

To calculate for spiral length, the formula is L = pi*N* (D + d) / 2. This is wherein N = (D - d) / (2*t) is the number of wraps of tape of thickness t on a roll of diameter D (when full) around a core of diameter d.

no because there is nostructural value in a seal weld, its main purpose is to seal

Given enough time, like leaning against a wall, it will bow slightly. If not installed properly, it will break with an eight of an inch deflection.

advantages of jbcc

A putlog scaffold consists of a single row of standards with the inner edge of the platform as close to the wall as is practicable. The standards are connected by a ledger fixed with right angle couplers and the putlogs are fixed to the ledgers using putlog couplers.

amino acid = "1000 grams sugar 250 grms fatty acid 500 gram water 100grmasodium hydroxide?"

In a beam the vertical part is called the web and the horizontal part is called the flange.

For an 'I' beam the middle vertical part is the web and the top and bottom horizontal parts are the flanges.

The link between CBR and bearing capacity if you get figures in CBR how can you link them to the bearing capacity in kPa, this is the link in soil testing.

A VJ board or vertical joint board is applied mainly in wood paneling. Also referred to as a tongue and groove, it is used in fitting similar objects together.

The principles of digital terrain modelling include elevation and local topographic variables. It also includes regional topographic variables as well as structural lines.

The invert is the exact elevation of a drainage facility or pipe where the water is designed to flow. If a 2 foot dia. pipe crosses the road, one end of the pipe will be higher than the other, say 6 inches of fall. Say the high end (elevation measured at the end of the pipe at the flowline) is at elev. 325.00 The elev of the low end at the end flowline would be 324.50. 325.00 is the invert in 324.50 is the invert out

Invert Level is the bottom of the pipe, reduced level is the middle of the pipe.

Grades 1 through 4 are used to make this as well as other types of metals. This is extremely strong commercial steel.

It is possible to apply paint to galvanized steel. It must first be primed with a special primer. You must use a paint designed for this purpose.

Statistics are used in virtually everything. People will use statistics to keep track of the record of an athlete or progress made in science, and it consists mostly of numbers.

I have a 3 and a half foot diameter and want the pit to be 24 in tall. How many fire brick do I need if the bricks are 3 by 7