Explanation

A minimum gradient of 1 in 20 ensures adequate flow of wastewater in house drainage.

It prevents stagnation and blockages in the drainage system.

Explanation

A statically indeterminate structure has more unknown forces than can be solved using only equilibrium equations.

Additional compatibility or deformation equations are required to solve such problems.

Explanation

Factor of Safety (FOS) = Ultimate Stress ÷ Working Stress.

It ensures a structure can support loads safely beyond the expected working load.

Explanation

Oxidation of iron in the presence of moisture leads to the formation of iron oxides, known as rust.

Rust weakens the iron and can cause structural deterioration if not protected.

Explanation

As per design standards, the minimum area of reinforcement in a beam shall be greater than:

0.85​×b×d/fy

To better understand, here is the formula:

$A_{s(min)} = frac{0.85}{f_y} , b d$fy

Where:

• As​ = minimum steel area
• $f_y$ = yield strength of steel
• $b$ = width of beam
• $d$ = effective depth

Explanation

PC-II (Planning Commission Stage-II) contains detailed project estimates, drawings, and technical specifications.

It is used for project approval, funding, and execution planning.

Explanation

A mix with less aggregate and more cement (like 1:1:2) is richer and produces higher strength concrete.

The higher cement content improves bonding and reduces voids, enhancing durability.

Explanation

Reduced bearing is measured from the north or south towards the east or west.

A WCB of 220° corresponds to S 40° W in reduced bearing notation.

Explanation

Clay soils exhibit plasticity and have defined liquid and plastic limits.

These limits help classify soil behavior for engineering applications.

Explanation

Regulatory signs give instructions that must be obeyed by road users, like speed limits.

They are enforceable by law to ensure road safety.