1. Describe the movement of powder particles during compaction in powder-metallurgy process. What features are responsible for the fact that powder does not flow and transmit pressure like a liquid?

What are the roles, responsibilities, and risks (including risks for payments, ect.) for an owner on a construction project?

Edit question write a career plan for a full stack web developer

Explain why metals are electrically conducting and ceramics are good insulators.

The lattice parameters of a BCC metal is 3.1468 Å. Calculate:

(a) Interplanar spacing and the size of Burgers vector for slip system (111)[1 1̅ 0].

(b) Interplanar spacing and the size of Burgers vector for slip system (101)[111̅].

(c) What is the ratio between the shear stress required for slip for the two systems ( ?(111)[1 1̅ 0] / ?(101)[111̅] )? Assume that k=2.

You are a failure analysis engineer who must certify the integrity of an engineering component. Your component manufacturer has informed you that the plane strain fracture toughness of the component is measured to be as high as 140 ???√? and certifies that the surface cracks observed in the components are not bigger than 0.01 mm. During service, this component is to be continuously cycled at 3000 revolutions per minute between compressive and tensile stresses of 350 MPa. Assume that ? = 1.12 for all possible surface cracks. Materials constants are ? = 3.4 and ? = 2 × 10^−15 .

(a) You have access to three non-destructive testing techniques as shown in the table below. By calculating the critical crack length required to cause fracture, determine if any of the three techniques can be used to detect the crack before the fracture of the component.

(b) If you are to remove the component as soon as the crack length reaches 55% of the critical crack length to cause fracture, determine how many useful hours of the life of this component remains.

The sustainability or waste triangle is (in order of most important to last resort):

Recycle, reuse, reduce
Reduce, reuse, recycle
Reuse, reduce, recycle
Reduce, recycle, reuse

Redundancy in the leachate collection system is important. Pick all the reasons why.

Mechanical failures
Drought
Regular maintenance
Electrical outages

. If you know the difference in enthalpy (h) of the supply air and the room air, how could you use this to determine the required amount of supply air to condition for a heat loss or a heat gain?

What are the two preferred ways to supply air into a perimeter space to heat and cool the space?

What is the appropriate name for a residential hot air heating unit?

Construction Code

Methods of dispute resolution:

Discuss the advantages and disadvantages of resolving disputes through the court system.

An existing 36-inch diameter concrete gravity sewer installed on a slope of 0.25% currently conveys a peak flow rate of 12 cfs. A builder proposes to connect a new residential development to this existing sewer. Projected peak flow from this new development is 4 cfs.

a) Depth of flow in sewer before new development is connected

b) Depth of flow in sewer after new development is connected

c) Flow velocity in sewer after new development is connected

d) Flow type (critical, subcritical or supercritical) after new development is connected

e) Diameter of a sewer to convey combined peak flow of 16 cfs if maximum allowable D/d is 0.85 (i.e. assume you are designing new sewer on the same 0.25% slope)

1. The ordinates of a hydrograph at a section of a stream having a drainage area of 81 km² are given below. Find the unit hydrograph assuming the base flow equal 18 m³/s.

A simple floor girder with a span 20 ft has a tributary width of 20 ft. The nominal loads that act on the floor system are shown below. Using the ASCE 7 Strength Design load combinations determine the factored design load in the beam (plf). Show all load combination calculations and identify the controlling load combination and resulting design values for positive and negative moment (±Mu) and shear (Vu).

Nominal Loads