Reviewer 4 COPY Flashcards
What is the max moment for a restrained beam?
The Wide-Flange Section W21x62 has a nominal depth of ___ millimetres.
533
Which of the following criterion is not applicable for plug and slot welds?
The width of the slot shall not be less than the thickness of the part containing it plus 8mm nor shall be greater than 2-1/2 times the thickness of the weld.
The maximum deflection for a simply supported beam with concentrated loads at midspan is equal to:
The greatest stress which a material is capable of developing without a permanent deformation remaining upon the complete release of stress is called
proportional limit
The Modulus of Elasticity of Steel is
200 GPa
What is the distance from the extreme fibre in compression to the centroid of the tension steel area?
Effective depth
____ The narrowest dimension between sides of the forms,
1/5
____ The depth of slabs, or
1/3
___The minimum clear spacing between individual reinforcing bars.
3/4
It refers to the occupancy load which is either partially in place or fully in place or may not be present at all is called:
Live Load
The slenderness ratio of compression members shall not exceed ___.
200
The recommended design value for k-factor for both ends pin connected.
1.0
In T-beam construction, the flange and web being built integrally, the width of the slab effective as T-beam flange shall not exceed one-quarter of the span length of the beam and the effective overhanging flange width on each side of the web shall not exceed:
one-half the clear distance to the next web
Maximum unstable strain at extreme concrete compression fibre shall be assumed to be equal to
0.003
It is the sidewise bending or displacement accompanied by twisting about minor or weaker axis usually at the compression section.
buckling
In column, the ratio of its effective length to its least radius of gyration is called ___.
slenderness ratio
The allowable stress for compression members whose largest effective slenderness ratio of any unbraced segment is less than the square root of (2pi^2E)/Fy as per AISC standards is ___.
In computing net area, the width of a rivet or bolt hole shall be taken as ___mm greater than the nominal dimension of the hole normal to the direction of applied stress.
1.6
For relatively short fittings such as splices or gusset plates used as statically loaded connecting elements, the net Area An shall not exceed __% of the gross area Ag.
85
It is the ability of a material-like steel to undergo large inelastic deformation without failure.
ductility
It is an imaginary distance from the centroidal axis which the entire area can be assumed to exist without affecting the moment of inertia.
radius of gyration
In the strength design method (NSCP 2015), the ultimate load is computed as:
1.6 LL + 1.2 DL
The minimum reinforcement ratio provided by the code is taken __/fy.
1.4
Which of the following method that is used to taken into account the slenderness effect of columns according to IS: 456-2000?
Slenderness Method
The maximum strength attained in concrete in limit state design is generally taken as
fck
The Pitch of helixes in circular columns shall not exceed
75mm
The minimum pitch of the helical reinforcement in circular columns should be
25mm
What is a steel element such as wire, cable, bar, rod or strand, or a bundle of such elements, used to impart pre-stress to concrete?
Tendon
Good seismic design practice recognises of the following conditions as vertical irregularities in the design of seismic-resistive buildings?
- Reentrant Corner
- Weight Irregularity
- n-plane discontinuity in vertical bracing
- Soft Story
1, 4
A __________ is a vertical element that resists lateral forces in the plane of the wall through shear and bending. Such a wall acts as a beam cantilevered out of the ground or foundations, and part of its strength derives from its depths. Examples are the interior wall of a multi-storey building, enclosing stairways, elevator shafts and mechanical chases which are mostly sliding and run the entire height of the building.
shear wall
In any one bundle, groups of parallel reinforcing bars bundled in contract to act as a unit shall be limited to a maximum of
four
The purpose of prestressing concrete members is to
Reduce tensile stresses resulting from loads
The recommended deflection criteria due to wind loading on a brick vender wall utilising a metal stud back-up system is:
L/600
A building form that is ideal for resistance to earthquake forces would be characterised of the following?
- Symmetrical about a reentrant corner
- Symmetrical in plan
- Heavier at the base than at the top
- Asymmetrical in plan
- Long linear plan
- Asymmetrical in elevation
2, 3
For normal weight concrete, the modulus of elasticity of concrete Ec, may be taken as
One-way concrete slab are used when:
The slab is being supported by two parallel beams
For beam with a slab on one side only, the effective overhanging flange width shall not exceed
any of the above
In order to achieve economy, the spacing of stirrups at mid span section ____ compared to that of support section
May be decreased
Minimum steel required in slabs as mainly controlled by the following consideration
Shrinkage and creep
A force system to be in static equilibrium, the algebraic sum of the forces along any direction
Zero
The moments developed in the slab are influenced by the following factors
- Short Span
- Long Span
- Type of Supporting Edge
- Magnitude and type of load on slab
1, 2, 3, 4
- Which of the following considerations has the greatest influence on decision in favour of a pre-engineered structural system as that shown below for a warehouse facility?
Construction Time
- The maximum bending moment for a purlin may be taken as:
wL^2/10
- The strength of a short steel column loaded at its centroid is governed by the
Radius of Gyration
. A steel beam or column consisting of two or more section of different kind is known as
built-up → more accurate: composite beam
