A straight line approximation for the Mohr-Coulomb failure envelope can then be drawn. The friction angle is thus calculated from the slope of the failure envelope. As with any experiment, the more tests taken for different normal stresses, the more accurate the Mohr-Coulomb failure envelope will be. Experimental Procedure * Weigh the initial mass of soil and record it. * Measure the height, width and length of the shear box and record it.
Naturally occurring chromite is composed of small amounts of titanium, zinc, cobalt, nickel, and manganese. Due to this, chromite is responsible for a multitude of industrial contributions to society. When chromium is extracted from chromite, it produces a metal alloy known as stainless steel. Since chromite has high heat stability, it is often used as a refractory material. Also, the resistance to high temperatures and pressures allow it to go through the metamorphic processes unscathed.
The backfill material needs to be compacted in lifts of loose depth that does not exceeding 8 inches and compacted to at least 95% of Standard Proctor Density at optimum moisture content, +/- two percentage points, as determined by ASTM D698 or provide the City with suitable advanced technology compaction testing methods, as approved by the Director 7. Is the company we hire to do the work required to be registered in any way? Yes, the company must be certified to work in public rights-of- way. 8. What is a right-of-way?
Experiment 8: Separation of a Mixture of Solids Purpose: The purpose of this lab is to separate the solids mixture containing the iron, sand, benzoic acid and salt. These solids were separated based on the unique properties of different solids such as variation in the magnetic properties and variation is solubility such as ranging from completely insoluble to completely soluble. Procedure: The necessary materials required for this lab procedures was obtained from the labpaq: solids mixture, weighing dish, and digital weighing scale. Each and every solid separated in this lab experiment was weighed using the weighing dish and digital weighing scale. From the solids mixture, the iron filling were separated by using the property of iron fillings that they were attracted towards the magnet.
From experimental results, it is found that the ratio of funnel speed to flow area of mortar with a fixed amount of super plasticizer is almost constant, independent of the water powder ratio. The higher the amount of super plasticizer the lower is the ratio of funnel speed to flow area. This ratio is proposed as an index for the effect of super plasticizer on mortar flowability and viscosity from the viewpoint of achieving self-compatibility. This index is useful to evaluate the amount of super plasticizer for proper flowability and viscosity of mortar. Sukumar and Nagamani (2010) reported the relation between superplasticizer dosage and fly ash content existed in SCC mixes with 8-52% fly ash, slump flow of 742-793 mm and w/p ratio of 0.31-0.34.
One major consideration when planning cable duct and trays is the bending radius, the bends must have smooth curves. Although conduits can still be used inside the building, so when a cable is pulled into a conduit, the conduit’s bending radius must be larger than the cable’s minimum bending radius for loaded conditions. Direct burial, aerial and blown fiber installations. Most common is the use of direct burial installations for long cross-country installations. The cables are plowed in or buried in
Molecular Weight by Dumas Method In your text (Chang, 10th Ed) : 5.4 The Ideal Gas Equation, especially the Density and Molar Mass of a Gaseous Substance subsections Purpose: The experimental determination of the molecular weight of a volatile liquid sample and the density of its vapor are used to illustrate the uses of the Ideal Gas Law. Background: The Ideal Gas Law is: PV = nRT (Eqn. 1) where P = pressure in atm, V = volume in L, T = temperature in K, and R = 0.082056 L atm/(mol K), the Gas Constant It describes, with good precision, the behavior of many real gases over a wide range of pressures and temperatures. Even when there is deviation from ideality, it is useful as a starting point in physical analysis Recalling that density is mass/volume, Eqn. 1 can be re-written to derive the equation for the density of a gas, assuming ideal behavior: n = P Now multiply both sides by MW: n(MW) = P (MW) V RT V RT n(MW) is # moles x grams/mol = grams = mass, m Therefore: m = (P)(MW) = d , density (mass/volume, in grams/ liter ) (Eqn.
Make sure to record the type of metal. 2.) Weigh each cylinder on the top-loading balance, and record the mass of each to the nearest 0.01g. 3.) Using a metric ruler measure the height and diameter of each cylinder in centimeters.
Experimental Design: - Independent Variable: different types of metals: magnesium, zinc and Copper - Dependent Variable: amount of reactants observed for each metal - Control : The Air -Constants: The amount of chemical solutions, the time the metals were in the chemical solutions and size of each metal during the experiment 4. The Dependent variable, the number of reactions the metal will receive and will be measured based on their reactivity. The higher the reactant, the more reactions and the less reactive the less amount of reactions The Independent variable, the different metals that are tested by observing for chemical change. Once the metals which are magnesium, copper and zinc are put into the 3 different solutions along with the control which is water and air, we will be able to determine if they do
To resist sagging or hogging from occurring in a concrete beam the weakest points of the beam will be reinforced with steel. In this drawing you can see that hogging is occurring in the beam In this drawing you can see that the load acting upon the bean is causing it to sag Load The beam would be reinforced with steel bars to prevent these deflections from occurring. The reinforcement would occur in the beams weakest points and this would usually be the