Vapor Retarders and Air Barriers in Low-Slope Roofs

Q: Urgent..... Classify the following materials with regard to their thermal insulation properties,…

A: Solution solution of above question is in second step

Q: Q- To complement the construction Q- What is the correct Sentence of a wall or to connect a wall to…

A: Thermal insulation- It means the process of resistance against the transmission of heat. Thermal…

Q: What are the advantages of forced oxidation (external) system?

A: forced oxidation (external) system- It is defined as the method which in the construction industry…

Q: Design girts in an industrial building for the following data Height of columns 11 m 8m c/c Spacing…

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Q: Transferring a composite wall and then to an inside air represents heat from outside air to O…

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Q: What are the advantages of surface condensing systems?

A: The surface condenser advantages as follows: 1. The atmospheric phenomenon is used as boiler feed…

Q: An approach that insulates the attic, floors, and walls to reduce the energy needed to heat and cool…

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Q: Q2: A hot concrete slab comes from a furnace at an inatial temperature of 85 C. To cool down the…

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Q: What are the major thermal factors to consider when selecting a material?

A: The significant thermal variables to consider while choosing a material are  Thermal conductivity…

Q: What is the corona in the electrostatic precipitator?

A: Corona Discharge in the Electrostatic Precipitator: Corona Discharge ia also called as the Corona…

Q: B) What is the difference between? 2-Internal and External flow

A: Internal flow can be defined as a type of flow bounded by solid surfaces. Such type of internal flow…

Q: 80° -Sheathing 70° Gypsum wallboard 60° Fiberglass between studs Siding 50° Air inside room 40° at…

A: Given- Graph of temperature v/s Distance through walls

Q: i. Calculate the change in volume of the glass. ii. Calculate the change in volume of the acetone.…

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Q: Calculate y2 and v2

A: Given: Initial flow depth, y1 = 0.2 m Initial velocity of flow, v1 = 2 m/s Channel width, B = 1 m

Q: Identify if SPONTAENOUS or NON-SPONTAENOUS. a) A ball is being rolled up a slope. b) When exposed…

A: Answer :-  Spontaneous are those in which there is no energy applied or it occur by itself .  Non…

Q: Define fuel equivalence ratio.

A: The actual fuel to the stoichiometric fuel ratio is defined as fuel equivalence ratio.

Q: Define contacting power in wet scrubbers? How is it related to scrubber efficiency ?

A: Solution: Wet scrubber basically tells about the variety of devices that generally remove pollutants…

Q: Surface area that can be covered by half gallon of latex paint (1 coat)

A: Step: 1 Latex paint: - It is one of the types of paints which are totally water based. This paint…

Q: APPLICATION OF PIPE INSULATION IN PLUMBING INDUSTYR

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Q: Steel forms will be used to cast a 12 in. thick wall in cold weather with concrete containing 300…

A: Curing Concrete curing is the process of keeping enough moisture in concrete at the right…

Q: The vapor barriers used in walls and floors most likely are made from what type of plastic?

A: Vapor Barriers Vapor barrier also known as moisture barrier, a vapor barrier is typically a sheet of…

Q: A well insulated room with a refrigerator running and door open, the air tem-perature in the room…

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Q: What is latent heat of vaporization?

A: Latent heat is the heat energy that is absorbed during the transition phase of a substance. It is…

Q: Explain in precise terms the function of a vapor retarder in an exterior wall or roof assembly.

A: Vapor retarder is a material that reduces transmission. It reduces the movement of water vapor…

Q: ) Find the thermal conductivity of common brick at 300 K. Provide the source (Table number and…

A: Given:- temperature=300K To find:- thermal conductivity

Q: The purpose of heat treatment

A: Heat Treatment : Heat treatment is a collection of manufacturing, thermal and metalworking processes…

Q: How is Activated alumina manufactured?

A: Activated alumina is manufactured from aluminium hydroxide (double salt). It acts as a catalyst in…

Q: Briefly describe what the techniques of Thermogravimetric Analysis (TGA), Differential Thermal…

A: Under a controlled environment, thermogravimetric analysis (TGA) evaluates changes in weight in a…

Q: why jacketed pipe insulation use for noise reduction

A: What is noise reduction? The process of reducing noise from a signal is known as noise reduction.…

Q: What thermoset plastic is widely used to produce foamed insulation commonly sprayed on roofs and in…

A: Answer The type of plastic widely used to produce foam insulation which is commonly sprayed on roofs…

Q: There are no temperatures limits (heat or cold) in the Regulations for construction. True False

A: True

Q: Which of the following is not a method for stopping or impeding air leaks in a building? Installing…

A: Air leakage happens because of many reason such as openings in wall or cracks etc. The air enters…

Q: Apply knowledge of laboratory safety.

A: Safety in the laboratory knowledge 1) Using the standard operating procedurea) General personal…

Q: What are the component of the pneumatic piezometer?

A: Pneumatic piezometer is used to measure the pressure.

Q: coefficient of volume compressibility

A: Given data, Following data are given for the laboratory sample, σ'0=175 KPae0=1.1σ'0+∆σ0'=300…

Q: A well-mixed, insulated water storage tank is to be maintained at internal temperature 60°C. The…

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Q: B/ heat exchanger in vapor compression system is necessary for two reasons , list them?

A: A heat exchanger transfer heat between 2 or more fluids. They are used in both cooling and heating…

Q: Determine which of the following answers is the heat flow across the plane wall

A: Given thermal conductivity k = 8.45W/m °C Temperatures T1= 65 °C , T2 = 35 °C  Surface area A = 10…

Q: Estimate the total number of plates in this ESP. An ESP must treat 400,000 aefin with 98.6%…

A: Given values: Q = 400000 m3/min Efficiency, η = 98.6%

Q: Paint issues from the tank at a flow rate of 45 ft^3/s. Find the kinetic viscosity in ft^2/s. Assume…

A: Given:- Flow rate = 45 ft3/sec To find:- From the given question it is required to calculate…

Q: 1. = The Room Volume in cubic meters. 2. = The Surface Area of the two glass windows in square…

A: Note : Since you have posted a question with multiple sub-parts, we will solve first four sub-parts…

Material Selection

A wide variety of engineering applications make use of different materials, depending upon their usage. The materials used in civil engineering vary in their properties such as strength, ductility, brittleness, and creep strength. Depending upon the application and external loading conditions, an engineer must make a wise decision for material selection. A wrong decision would fail in its functionality.