No tension should develop at the base of the rectangular well foundation or at any horizontal section within the well. For no tension at the base, the resultant of $P_{a}$ (Total active thrust) and $W$ ( Weight of soil and well above the base) must pass through middle

half of the base

No worries! We‘ve got your back. Try BYJU‘S free classes today!

third of the base

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

quarter of the base

No worries! We‘ve got your back. Try BYJU‘S free classes today!

of the base

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B third of the base
For no tension to develop at base of foundation,
$σ_{m i n} > 0 \frac{P}{B^{2}} [1 - \frac{6 e}{B}] > 0 e > \frac{B}{6}$
So point load must lie within $(\frac{B}{6} + \frac{B}{6}) = \frac{B}{3} i . e$
within middle third of base.

Suggest Corrections

Similar questions

Q. For a masonry dam of base width b, at which location w.r.t. the central line, should the resultant loading intersect the sections to avoid tension in any horizontal section?

Q. Sinking effort in well foundation is the ratio of weight of well steining to that of skin friction developed on the sides and should preferably be

How many m³ of soil has to be excavated from a rectangular well 28 m deep and whose base dimensions are 10 m and 8 m. Also find the cost of plastering its vertical walls at the rate of Rs 15/m².

Q. For transistor action, state which statements are true:
(1) Base, emitter and collector regions should have similar size and doping concentrations.
(2) The base region must be very thin and lightly doped.
(3) The emitter-base junction is forward biased and base-collector junction is reverse biased
(4) Both the emitter-base junction as well as the base-collector junction are forward biased

Q. Based on the conditions of work as well as rules and regulations, economic activities are classified into organised and unorganised sectors.

Join BYJU'S Learning Program

No tension should develop at the base of the rectangular well foundation or at any horizontal section within the well. For no tension at the base, the resultant of Pa (Total active thrust) and W ( Weight of soil and well above the base) must pass through middle

The correct option is B third of the base For no tension to develop at base of foundation, σmin>0PB2[1−6eB]>0e>B6 So point load must lie within (B6+B6)=B3 i.e within middle third of base.

No tension should develop at the base of the rectangular well foundation or at any horizontal section within the well. For no tension at the base, the resultant of $P_{a}$ (Total active thrust) and $W$ ( Weight of soil and well above the base) must pass through middle

The correct option is B third of the base
For no tension to develop at base of foundation,
$σ_{m i n} > 0 \frac{P}{B^{2}} [1 - \frac{6 e}{B}] > 0 e > \frac{B}{6}$
So point load must lie within $(\frac{B}{6} + \frac{B}{6}) = \frac{B}{3} i . e$
within middle third of base.