The glass-fiber consists of 10 to 100 μm 0.39 to 3.94 Mil diameter glass fibers encased in stainless steel tubing. This allows it to be used at high operating temperatures (350°C 662°F max.). The optical fiber sensors are divided into two categories: thrubeam and reflective. The thru...
Examples of well-known material/environment pairs are: MATERIAL ENVIRONMENT Brass Ammonia Stainless steel Chlorides High strength steels Hydrogen How can SCC be controlled? By selecting a material that is not susceptible to the service environment and by ensuring that any changes to the environment ...
When teams have clarity into the work getting done, there’s no telling how much more they can accomplish in the same amount of time.Try Smartsheet for free, today.
concrete, steel, or a combination) are driven into un-excavated soil. The piles are a type of deep foundation used to hold up large structures – often bridges. In this article we discuss pile driving basics, the common problems encountered, and potential solutions. ...
In concrete slabs it is possible to reduce the width of these cracks by placing steel bars (reinforcement) in the concrete, which effectively holds the cracks together. Although shrinkage still occurs the cracks formed are closer together and are held together so tightly that they are usually too...
of sturdy coat hanger wire , a bicycle spoke, or cut down piano wire instead of a steel knitting needle. This, of course, is not the way that weavers in South America start their weaving. They use a header cord within a shed which is then lashed all the way across the width of the...
2 Site Work Basics Ezekiel Enterprises, LLC Figure 2 – Points on existing structures used as bench marks. A spike may be driven into the root of a tree or placed higher up on the trunk of the tree when the limb clearance allows higher rod readings. Figure 3 shows the recommended way ...
The common methods used to coat ceramic structures with γ-alumina are colloidal coating, sol-gel and slurry coating. Methods to deposit γ-alumina onto metallic structures are different due to the difference in the porosity of the surface. The subsequent sections summarize the methods used to ...
The beauty of the proportional-integral-derivative (PID) algorithm for feedback control is its simplicity and efficiency. Those are the main reasons why PID controller is the most common form of feedback. PID combines the three natural ways of taking into account the error: the actual (proporti...
Most structures are safe for 20 to 25 pounds of snow. Snow has about 1/10th the density of liquid water. Struts For geodesic domes, it’s the pipe or wood beams (ex.: 2″X 4″) used to build your structure. Tarp (tarpaulin) Large sheet of durable, resistant and water-resistant/...