How thick must the insulation layer be to achieve the requirement U = 0.18 W/m2K? A wall of ventilated facade with insulation must meet requirements: Bearing construction: Lightweight concrete λ lightweight concrete = 0.14 W/mK, d=100 mm λ insulation = 0.04 W/mK, d=? etc Cold bridges 15%   Guide to task 1: 1) The requirement for the U-value with regard to cold bridges will be U - 15%. 2)Ri for walls: 0.13 m2K/W Ru for walls: 0.04 m2K/W

Q: Choose the correct answer Gel pores could be containing large amount of evaporable water.…

A: A) True  Gel pores could be containing large amount of evaporable water.

Q: An engineer is responsible for designing a culvert at the point of solution of the watershed below.…

A: Intensity, i=2 in/hrrunoff coefficient, Cj = 0.01 *AAreas in acres, conversion factor, K=

Q: a design study where high toughness and a high le vel of damping are required, what kind of a…

A: High toughness refers to the materials having high impact loading resistance. High level of damping…

Q: Note:hand written solution should be avoided.

A: Approach to solving the question: Detailed explanation:Examples: Key references:

Q: Low-slope roof membranes have varying impacts on the environment.

A: Solution: A low-slope roof is defined as that roof whose slope value is less than 3-in-12 which…

Q: 2)Design a short square tied column for the following conditions: P = 550k (already factored).…

A: Given values are as follows: step 1.          f'c = 4000 psi   and    fy= 6000 psistep 2.…

Q: should the total evaporable mosture and total surface moisture should be equal? what will happen to…

A:

Q: How many kg of horizontal rebar are in the wall shown below? Assume • Rebar shown is accurate •…

A: The procedure to calculate the rebar weight is shown below:- * There is no need to measure the…

Q: Fillet Welds Oriented Longitudinally and Transversely to the Load The two 4 x 4x3/8 angles shown in…

A:

Q: what is the importance of test duration in insulation testing ?

A: Insulation:- Insulation is a technique for reducing energy use that provides resistance to the…

Q: 4. improved? What is freeze-thaw resistance, and how can it be

A: Freeze thaw resistance is also known as freezing and thawing resistance and it is the property of…

Q: Wood has reduced 1 improved O thermal insulating properties as the wood moisture content increases.

A: given : statement    to find : fill up and reason

Q: For the loaded beam shown below in Fig 4.1. Determine the reactions at the supports A and B nat will…

A:

Q: a. What is the maximum pressure that the form needs to withstand if the wall is to be 114 mm thick,…

A:

Q: At what value of particulate resistivity does ESP design and operation become difficult?

A: Answer:- Electrostatic Precipitator (ESP):- An electrostatic precipitator is defined as a filtration…

Q: Which is the best with respect to thermal insulation and sound insulation, thermostone block or clay…

A: Given question, Which is better between clay brick and thermostone block with respect of thermal and…

Q: i. Choose the wall that will give the lower coefficient of thermal conductivity.

A: solution of b. i

Q: What is the temperature factor, Ct, for a connection with wet in-service conditions at 120° E…

A: Given data: Connection with wet in service conditions at 120oF

Q: Which admixture should be used in cold climate? Name one and explain.

A: Admixtures are the natural or artificial chemicals that are mixed into concrete.There are several…

Q: Two materials with 10 mm² contact area have been tested to determine how much adhesive wear takes…

A: Given:- area = 10mm2 No. of tests = 350 HB277 To find:- average wear coefficient

Q: 8. Gable window are provided in gable end of 1.floor 2. frame ------ 3. roof 9.Failure occurs in…

A: Explanation : ( 8 )  Gable section of a building is the upper part of wall having a pitched /…

Q: Note:hand written solution should be avoided.

A: Step 1: Step 2: Step 3:Step 4:

Q: Qualifying materials  Quantify the materials that you used in your drum (acoustic treatment only)…

A:

Q: What are the precautions when using ceramic filters?

A: Foundry filters are packed in cardboard boxes that protect them from damage. The filter layers are…

Q: b- Why the sonic derived porosity is increased by the presence of gas? e- How can detect the…

A: The sonic or acoustic log measures the travel time of an elastic wave through the formation.The…

Q: 2) The vertical bar AB has a mass of 100+ab kg with center of mass G midway between the ends. The…

A: The vertical bar AB has a mass of 126 kgcouple = 11 kNmThe center of mass is GTo determine:The…

Q: The condenser for a heat pump system sits on this slab of concrete. Howmany cubic centimeters of…

A:

Q: Discuss the differences between the wetting and drying SWCCs.

A: S.No Wetting  SWCCs Drying SWCCs. 1 Wetting is defined as the process which is leading to…

Q: A cold-storage warehouse is to be constructed of a number of individual rooms that are maintained at…

A:

Q: Q1/Seepage takes place beneath a concrete dam with an upstream blanket and a sheet pile cutoff wall…

A: Permeability of soil, To find: Discharge and flow net diagram.

Q: Choose the right choice 1--If the percentage of total absorption of standard perforated clay bricks…

A:

Q: A structural engineer supplied the load ratio of a 450UB45 steel section as being 0.5.       a)…

A: The following are the given information. Steel Section = 450UB45 The load ratio = 0.50

Q: t is kinetic friction coefficient for wheel plastic on concrete floor

A: The coefficient of kinetic friction for a plastic wheel on a concrete floor gives the level of…

Q: Calculate the shrinkage of concrete subjected to a relative humidity of 100% for 56 days. (Take…

A:

Q: Usage of Thermal Bricks in Constratuion.

A: The thermal brick is often called as fire brick which is a brick made of ceramic material to sustain…

Q: Question 1: Consider a 600 mm deep reinforced concrete cantilever beam supported by a 600 mm square…

A: Solution:-The obtainable improvement length in this case is 560 mm. Because the minimum stirrups…

Q: What diameter of glass tube is required if the capillary effects on the water within are not to…

A: Please refer the attached image for complete solution. THANK YOU.

Q: 25. A cable pulls on a flange with a tension force as shown. Using the slope-triangle method solve…

A: 25. A cable pulls on a flange with a tension force as shown. Using the slope-triangle method solve…

Q: The suction pressure applied on the cladding tiles at the corners of a tall building with vertical…

A: Given  2 types of tiles  Tiles with vertical ribs  Tiles without vertical ribs.

Q: A spherical gas-storage tank with an inside diameter of 29 ft is being constructed to store gas…

A:

Q: The existing beam is v 12* 16 with 1.44 in. protection, having W / D = 0.54; i is to be replaced by…

A:

Temperature Difference and Heat Transfer

Whenever there is a flow of heat flux resulting from a temperature gradient within the material or between two materials, there is heat transfer. Heat transfer primarily arises due to temperature differences between two bodies or within bodies. The term temperature gradient denotes temperature differences or variation of temperature due to change in some quantity. The fundamental use of the concept of temperature is found in the zeroth law of thermodynamics.