GATE CE 2026 Paper 2 — page 20

Questions 58–60 of 65. Imported answers require review unless explicitly marked reviewed.

A building is proposed in an area having thick deposit of silty clay. The water table is at the ground surface. The saturated unit weight of soil is 18 kN/m³ and unit weight of water is 10 kN/m³. The maximum vertical load (P) on a column of the proposed building is 200 kN.

Consider

for computation of the minimum depth of soil exploration.

is the effective vertical overburden stress.

is the increase in the vertical stress at depth z below load P as per the Boussinesq’s stress theory.

Based on above, the minimum depth (in m) of soil exploration required for the foundation design is ______ (rounded off to two decimal places).

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A soil sample has following properties: Natural water content = 30 % Plasticity index = 40 % Liquidity index = 50 % The estimated plastic limit (in %) of the soil is ______ (rounded off to one decimal place).

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For a given traffic stream, the speed-density relationship is given as:

where

is the mean speed (in km/h), and

is the density (in veh/km).

Considering

as 45 km/h, and

as 200 veh/km, the maximum flow (in veh/h) for the given stream is ______ (rounded off to the nearest integer).

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2026 · Paper 2

Question 58

Question 59

Question 60