Question 1

A foundation system consisting of grade beams bearing on drilled piers and an elevated ground floor with an underlying crawl space is

Accepted Answer

This foundation system is particularly effective for lightly loaded, low-rise buildings on expansive or low-bearing-capacity soils. The drilled piers can extend to depths where stable soil is found, and the grade beams distribute the loads, making it suitable for challenging soil conditions.

Question 2

Of the two types of foundation members-piers and piles-which is driven (pushed)into the ground and which is made by drilling a hole into the ground?

Accepted Answer

The answer of Of the two types of foundation members-piers...

Question 3

Which of the two deep foundation members (piles or piers)must be closely spaced and three or more of them joined together with a cap over them? Give reason for your answer.

Accepted Answer

The answer of Which of the two deep foundation members...

Question 4

Void boxes used for concrete formwork in foundation systems are made of

Accepted Answer

Void boxes used for concrete formwork in foundation systems are typically made of biodegradable materials like cardboard or paperboard, not the materials listed in the options.

Question 5

In a building with a foundation system consisting of grade beams bearing on drilled piers and an elevated ground floor with an underlying crawl space, the ground floor is generally constructed of

Accepted Answer

The ground floor in a building with a foundation system consisting of grade beams bearing on drilled piers and an elevated ground floor with an underlying crawl space can be constructed of precast concrete, steel frame, or wood frame, depending on the design requirements and preferences.

Question 6

In a basement excavation with walls supported by an excavation retention structure, waterproofing is applied to the excavation retention structure.

Accepted Answer

Waterproofing is necessary to prevent water from seeping through the excavation retention structure, which can cause damage to the structure and lead to potential safety risks. Waterproofing also helps to protect the interior of the basement from water damage.

Question 7

Waterproofing that is applied to the outside of basement walls is called

Accepted Answer

The answer of Waterproofing that is applied to the outside...

Question 8

In placing concrete into the drilled hole for a pier, special equipment is used. What is that equipment and what function does it serve?

Accepted Answer

The answer of In placing concrete into the drilled hole...

Question 9

A PT concrete slab- on- grade foundation is commonly used

Accepted Answer

PT (Post-Tensioned) concrete slabs-on-grade foundations are particularly beneficial on expansive soils because they can be designed to minimize cracking and movement caused by the soil's expansion and contraction.

Question 10

How are foundation piers constructed?

Accepted Answer

The answer of How are foundation piers constructed?...

Question 11

What is a mat foundation?

Accepted Answer

The answer of What is a mat foundation?...

Question 12

What is a foundation pile and the material(s)used for it?

Accepted Answer

The answer of What is a foundation pile and the...

Question 13

Driven piles and bored piers are both deep foundation elements. In which situations are piles used and in which situations are piers used?

Accepted Answer

The answer of Driven piles and bored piers are both...

Question 14

How would you describe a foundation called footing? Is it a deep foundation or shallow foundation?

Accepted Answer

The answer of How would you describe a foundation called...

Question 15

A PT concrete slab- on- ground foundation does not require control joints.

Accepted Answer

PT (post-tensioned) concrete slabs are designed to minimize cracking and do not typically require control joints, as the tensioning process helps to keep the slab in compression, reducing the likelihood of cracks.

Question 16

What is a deep foundation?

Accepted Answer

The answer of What is a deep foundation?...

Question 17

A foundation system consisting of perimeter grade beams and a reinforced concrete slab thickened over drilled piers is suitable

Accepted Answer

This foundation system is suitable for expansive soils because it provides stability and minimizes movement by distributing loads over a larger area and anchoring the structure with drilled piers.

Question 18

Give an example of a commonly used mat foundation.

Accepted Answer

The answer of Give an example of a commonly used...

Question 19

Building foundations are divided under two broad categories depending on their depths below ground. Name them.

Accepted Answer

The answer of Building foundations are divided under two broad...

Question 20

A posttensioned (PT)concrete slab- on- ground foundation generally consists of

Accepted Answer

A posttensioned concrete slab-on-ground foundation typically includes a PT slab, perimeter beams, and intermediate beams to provide structural support and manage loads effectively.

Quiz 12: Below-Grade Construction Foundation Systems and Basements