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FOUNDATION AND RETAINING WALL DESIGN > EARTHWORKS AND FOUNDATION > Flashcards

EARTHWORKS AND FOUNDATION Flashcards

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1
Q

sets forth requirements for excavations, fills, footings and foundations for any building or structure.

A

CHAPTER 3 - EARTHWORKS AND FOUNDATION

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1
Q

The slope of cut surfaces shall be no steeper than is safe for the intended use and shall be no steeper than

A

1 unit vertical in 2 units horizontal (50% slope)

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2
Q

T OR F

Existing footings or foundations which may be undermined by any excavation shall be underpinned adequately or otherwise protected against settlement and shall be protected against lateral movement.

A

T

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3
Q

Before commencing the excavation, the person making or causing the excavation to be made shall notify in writing the owners of adjoining building not less than ________ before such excavation is to be made and that the adjoining building shall be protected.

A

10 days

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4
Q

on terraces shall be designed to effectively collect surface water and discharge to an outfall.

A

SWALES OR DITCHES

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5
Q

A single run of swale or ditch shall not collect runoff from a tributary area exceeding ________ (projected area) without discharging into a down drain.

A

1,000 m^2

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6
Q

may consist of biotechnical or geosynthetic intervention adapted to the local conditions

A

EROSION CONTROL

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7
Q

T OR F
The faces of cut and fill slopes shall be prepared and maintained to control against erosion.

A

T

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8
Q

What are some types of devices or methods needed to check to control erosion and provide safety

A

DAMS, CRIBBING, RIPRAP

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9
Q

The design of ___________________________________ Structures and Similar Reinforced Embankments and Fills shall incorporate provisions for internal and external drainage

A

Mechanically Stabilized Earth (MSE)

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10
Q

The angle of internal friction for the backfill material shall not be less than

A

34°

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11
Q

The assigned cohesion value during the design stage for the backfill material within the reinforced zone shall not exceed

A

5 kPa

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12
Q

The soils should be compacted to no less than ________ MDD determine according to AASHTO T 99 Method C or D and corrected for oversized material according to AASHTO T 99, Note 9.

A

95%

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13
Q

of the supported shall be limited to that which will not interfere with the usability and serviceability of the structure.

A

DEFLECTION AND RACKING

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14
Q

Field borehole log containing the following information

A

a. Project location ’
b. Depth of borehole
c. Ground elevation
d. Ground water table elevation
e. Date started and finished

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15
Q

shall be presented in a report.

A

GEOTECHNICAL INVESTIGATION AND ASSESSMENT

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16
Q

shall be designed for the most unfavorable load effects due to combinations of loads.

A

FOOTINGS

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17
Q

is permitted to include the weight of foundations, footings and overlying fil1

A

DEAD LOAD

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18
Q

as permitted in the Chapter on Loadings are permitted to be used in the
design of footings.

A

REDUCED LIVE LOAD

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19
Q

shall be supported on masonry or concrete foundations or piles or other permitted foundation system that shall be of sufficient size to support all loads.

A

BEARING WALLS

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20
Q

T OR F
Foundations for all buildings where the surface of the ground slopes more than 1 unit vertical in 5 units horizontal (5% slope) shall be level or shall be stepped so that both top and bottom of such foundation are level.

A

F (10%)

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21
Q

T OR F
The placement of buildings and structures on or adjacent to slopes steeper than 1 unit vertical in 3 units horizontal (33.3% slope) shall be in accordance with this section.

A

T

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22
Q

shall be bolted to the foundation or foundation wall.

A

WOOD PLATES OR SILLS

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23
Q

Steel bolts with a minimum nominal diameter of 12 mm shall be used in

A

SEISMIC ZONE 2

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24
Steel bolts with a minimum nominal diameter of 16 mm shall be used in
SEISMIC ZONE 4
25
Bolts shall be embedded at least __________ into the concrete or masonry and shall be spaced not more than _______ apart.
180 mm, 2 meters
26
305.7.4.1 The frictional resistance for retaining walls and slabs on silts and clays shall be limited to ________ of the normal force imposed on the soil by the weight of the footing or slab.
one half(1/2)
27
When grillage footings of structural steel shapes are used on soils, they shall be completely embedded in concrete. Concrete cover shall be at least ______ on the bottom and at least ______ at all other points.
150 mm, 100 mm
28
Temporary open-air portable bleachers may be supported upon wood sills or steel plates placed directly upon the ground surface, provided soil pressure does not exceed
50 kPa
29
The investigation and report provisions of Section 303 shall be expanded to include, but not be limited to, the following:
1. Recommended pile types and installed allowable axial capacities, and estimated settlement. 2. Driving criteria. 3. Installation procedures. 4. Field inspection and reporting procedures (to include procedures for verification of the installed bearing capacity where required). 5. Pile load test requirements.
30
Individual pile caps and caissons of every structure subjected to seismic forces shall be interconnected by
TIES
31
Such ties shall be capable of resisting, in tension or compression, a minimum horizontal force equal to ___________ of the largest column vertical load.
10 percent
32
Static axial compressive pile load test shall be in accordance with
ASTM Standard D-1143
33
lateral load testing of piles shall conform with
ASTM Standard D-3966
34
Dynamic pile tests shall be in accordance with
ASTM Standard D-4945
35
Static axial tensile load testing to determine the uplift capacity of pile-soil systems shall be in accordance with
ASTM Standard D-3689.
36
For foundations involving piles subjected to lateral, the investigation and report provisions of Section 303 shall be expanded to include, but not be limited to:
1. Allowable lateral load capacity of recommended pile type. 2. Resulting lateral displacements at allowable lateral load. 3. Lateral pile load test requirements.
37
306.8.1 The design resistance of piles subjected to lateral loads, should be assessed based on one of the following failure mechanisms:
1. For short piles, rotation or translation as a rigid body 2. For long slender piles, bending failure of the pile, accompanied by ’local yielding and displacement of the soil near the top of the pile.
38
T OR F No pile shall be driven within four and one-half average pile diameters of a pile filled with concrete less than 8 hours old unless approved by the geotechnical engineer.
F (24 hours)
39
TWO TYPES OF FOUNDATION
DEEP AND SHALLOW FOUNDATION
40
TYPES OF SHALLOW FOUNDATION
1. STRIP FOOTING 2. ISOLATED FOOTING 3. COMBINED FOOTING 4. MAT FOUNDATION 5. GRADE BEAM
41
TYPES OF DEEP FOUNDATION
1. PILE CAPS 2. PILES 3. DRILLED PIERS 4. CAISSONS
42
Is generally used for determination of soil subgarde properties for rigid foundations.
PLATE LOAD TEST
43
Allowable foundation pressure for "intact" tuffaceous sandstone"
1000 kPa
44
Allowable foundation pressure for "Lightly weathered" Tuffaceous Sandstone
500 kPa
45
Allowable foundation pressure for GW and GP
100 kPa
46
Allowable foundation pressure for SW, SP, SM, SC, GM and GC
75 kPa
47
Allowable foundation pressure for CL, ML, MH and CH
50 kPa
48
Location for critical section for Mu of footing supporting concrete wall
Face of wall
49
Location for critical section for Mu of footing supporting column or pedestal
Face of column or pedestal
50
Location for critical section for Mu of footing supporting column with steel base plate
Halfway between face of column and edge of steel base plate
51
Location for critical section for Mu of footing supporting masonry wall
Halfway between center and face of masonry wall
52
Is a continuous strip of concrete that supports a bearing wall, cantilevering out on each side of the wall.
Wall footing or strip footing
53
Are pads that distribute the column load in two directions to an area of soil around the column
Spread or Square footing
54
is used to support loads on a single column where sometimes the location of the footing is limited to its property line on one of the sides.
Rectangular footings
55
are used to support two heavily loaded columns are se spaced that normally designed single footings would run into each other, it would be rectangular or trapezoidal in cross section.
Combined footings
56
which is really two footings joined by a beam instead of by a bearing portion of the footing. Each of the two main parts of this footing supports a column load.
Cantilever or strap footing
57
which is a single thick mat or slab that supports the entire structure. This type of foundation is frequently used with poor soil conditions to equalize deformations.
Floating or mat or raft foundation
58
are slabes of reinforced concrete used to distribs column loads to group of piles
Pile caps
59
The concrete in concrete-filled steel pipe piles shall have a specified comprasive strength f of not less than
17.5 MPa
60
Precast prestressed concrete piles shall have a specified corapressive strength f'e of not less than
35 MPa
61
Precast concrete piles shall have a specified compressive strength fe of not less than
20 MPa
62
Concrete used in metal-cased concrete piles shall have a specified compressive strength fe of not less than
17.5 MPa
63
May be used to determine the bearing capacity of piles
Dynamic Load test
64
This force shall be prevented by foundation penetrating expansive soil
UPLIFT
65
Test to be performed when proposed structure are to be built above compressible fine-grained soil
Consolidation test
66
may be determined based on a site-specific study taking into account soil amplification effects.
PEAK GROUND ACCELERATION
67
An exhaustive geotechnical investigation should also be conducted in cases of:
questionable soils, expansive soils, or problematic soils (e.g. liquefiable, organic, compressible, sensitive, etc.)

FOUNDATION AND RETAINING WALL DESIGN (1 decks)

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