A water supply distribution system for an averagely-populated township is to be designed for

 A combined sewerage system is more appropriate for developed areas where

100 m³ of sludge holds a moisture content of 95%. If its moisture content chagnes to 90%, the volume of this sludge will then be

The design overflow rate of a sedimentation tank is chosen considering

Consider the following statements in respect of flow equalization in a waste water treatment plant : 
1. Biological treatment is enhanced because shock loadings are eliminated or minimized
2. Flow equalizations is an attractive option for upgrading the performance of overloaded treatment plants.
3. Inhibiting substances can be diluted and pH can be stabilized
4. Thickening performance of primary sedimentation tanks following grit removal is improved.
 Which of the above statements are correct? 

Consider the following statements :
1. There will be no defects in select grade timbers.
2. The codal values for strength of grade-II timer without defects may be reduced by 37.5%.
3. For timber used as columns, the permissible stress in ungraded timbers is adopted with a multiplying factor of 0.50.
4. In case of wind force and earthquakes, a modification factor of 1.33 is adopted. Which of the above statements are correct ? 

Consider the following statements regarding timber :
1. The strength of timber increases by Kiln seasoning.
 2. Cutting of wood is to be done prior to treatment.
3. Water seasoning is good for prevention of warping.
4. ASCU treatment enhances the strength of wood. Which of the above statements are correct ?

Gase(s) emitted during rotting or decomposition of timber is /are mainly

Efflorescence of bricks is due to

Disintegration of bricks masonry walls is primarily due to
1. Efflorescence
2. Magnesium sulphate in brick  
3. Calcined clay admixtures
4. Kankar nodules
Which of the a above statements are correct ? 

Consider the following statements:
1. IS 3583 refers to Burnt Clay Paving Bricks.
2. IS 5779 refers to Burnt Clay Soling Bricks.
3. IS 3952 refers to Burnt Clay Hollow Bricks.
4. IS 2222 refers to Burnt Clay Lay Bricks.
Which of the above statements are correct?

Consider the following statements:
1. A high aggregate impact value indicates strong aggregates.
2. A low aggregate crushing value indicates high crushing strength of aggregates.
3. Aggregates having elongation index values greater than 15% are generally considered suitable for pavement construction.
4. Flakiness index of aggregates should not be less than 25% for use in road construction.
Which of the above statements are correct?

Consider the following statements regarding refractory bricks in furnaces:
1. The furnace is fired at temperatures more than 1700°C.
2. Silica content in the soil should be less than 40%.
3. Water absorption of bricks should not exceed 10%
4. Chrome bricks are known as basic bricks. Which of the above statements are correct?

Consider the following statements about lime:
1. Calcination of limestone results in quick lime.
2. Lime produced from pure variety of chalk is hydraulic lime.
3. Hydrated lime is obtained by treating quick lime with water.
Which of the above statements are correct?

Consider the following statements:
1. If more water is added to concrete for increasing its workability, it results into concrete of low strength.
2. No slump is an indication of a good workable concrete.
3. Higher the slump of concrete, lower will be its workability.
4. Workability of concrete is affected by water content as well as water-cement ratio.
Which of the above statements are correct?

One bag of Portland cement, 50 kg in weight, would normally have a bulk volume of

AsCu, a preservative for wood, developed by the Forest Research Institute, Dehradun, comprises of chemicals:

Consider the following statements related to autoclave bricks:
1.Less water absorption compared to other bricks.
2.Noise reduction
3.It is cheap compared to other types of bricks.
4.Requirement of bulk volume of mortar in joints being relatively less compared to other types of brick masonry.
5.Not recommended for outer walls. 
Which of the above statements are relevant to the use of ‘autoclave’ bricks? 

The minimum number of annular rings to be seen in every 2.54 cm in the radial direction from the core for timber to be classified as ‘Dense’ is

If the actual thickness of a brick masonry wall is 19 cm, its effective length is 2.70 m, its effective height is 2.82 m and its code specified stiffening coefficient is 1.2 then, for design considerations, the slenderness ratio of the wall will be taken as

What will be the depth of penetration of the plunger in Vicat Apparatus (IS : 5513 - 1976) from the bottom of the Vicat Mould, when the cement paste is tested for standard consistency, according to IS 4031 – 1988 ?

Two sewer pipelines A and B (having the same diameter and made of the same material) are laid at a bed slope of 1 in 225 and 1 in 625, respectively. Determine the ratio of their carrying capacities (Q_A to Q_B) .

Select the correct statement with respect to an over - reinforced cement concrete section under the working stress method .

A cantilever beam of span L is built - in at the support. It is restrained against lateral deflection and torsion at the free end. The effective length of compression flange for the beam as per IS 800 : 2007 is

What is the principle of plane surveying ?

What is the primary focus of kinematics in dynamics?

What is the primary purpose of evaluating bearing capacity in foundation design?

Which bearing capacity theory is commonly used for shallow foundations?

What field test is commonly used to estimate bearing capacity?

What is the factor of safety for allowable bearing capacity?

What is the primary property of a fluid?

What is the specific gravity of a fluid?

What is the total pressure force on a vertical plane surface submerged in a fluid?

Where is the center of pressure located for a vertical plane surface?

What is the force on a curved surface submerged in a fluid?

What is fluid kinematics concerned with?

What is a streamline in fluid flow?

What is the condition for irrotational flow?

What is the velocity potential in fluid flow?

What is the stream function used for?

What is a flownet?

What is the property of a flownet?

What is a source in fluid flow?

What is a sink in fluid flow?

What is flow separation in fluid flow?

What is a free vortex?

What is a forced vortex?

What is fluid dynamics concerned with?

What is the control volume approach used for?

What is the momentum equation based on?