संरचना विश्लेषण र RCC – Structures & RCC MCQ
संरचना विश्लेषण र RCC – सिभिल इन्जिनियरिङ
Structures & RCC · Civil Engineering · ५०१ प्रश्न
५०१ प्रश्न उपलब्ध। मोड छान्नुहोस्:
संरचना विश्लेषण र RCC: प्रश्न र उत्तर
सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ३ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।
सही: ० / ०
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Which part of IS 875 deals with wind loads on buildings and structures?
सही उत्तर: घ) Part 3
IS 875: Part 1 dead loads, Part 2 imposed loads, Part 3 wind loads, Part 4 snow loads and Part 5 special loads and combinations.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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As per IS 800:2007, the partial safety factor γm1 for resistance governed by ultimate stress (e.g. fracture of net section, bolts) is:
सही उत्तर: ख) 1.25
IS 800 uses γm0 = 1.10 for yielding and buckling, and γm1 = 1.25 for resistance governed by ultimate stress.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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As per IS 800:2007, the maximum effective slenderness ratio for a member carrying compressive loads resulting from dead and imposed loads is:
सही उत्तर: क) 180
IS 800 Table 3 limits KL/r to 180 for such compression members (400 for members always in tension).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The Hoyer (long-line) system is used for:
सही उत्तर: ख) Pre-tensioning several members in a single line between end abutments
In the Hoyer long-line method wires are stretched between two distant abutments and several members are cast along the line.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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As per IS 1343, the minimum grade of concrete for pre-tensioned prestressed concrete members is:
सही उत्तर: ख) M40
IS 1343 specifies minimum M30 for post-tensioned and M40 for pre-tensioned work, since pre-tensioning relies on bond to transfer prestress.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In a two-way slab with corners held down, torsion reinforcement at each corner is provided over a distance from the edges equal to:
सही उत्तर: क) One-fifth of the shorter span
IS 456 Annex D requires torsion steel in four layers over 1/5 of the shorter span from the edges, each layer 3/4 of the area for maximum mid-span moment.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In the working stress method (IS 456), the permissible tensile stress in Fe 415 HYSD bars is:
सही उत्तर: घ) 230 N/mm²
IS 456 (Annex B) permits σst = 140 N/mm² for Fe 250 and 230 N/mm² for Fe 415 in flexural tension.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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As per IS 456:2000, the effective span of a simply supported beam is the clear span plus the effective depth, or:
सही उत्तर: ग) The centre-to-centre distance of supports, whichever is less
Effective span = clear span + d or c/c of supports, whichever is less.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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As per IS 456:2000, the effective width of flange of an isolated-side L-beam (monolithic with slab) is the lesser of the actual width and:
सही उत्तर: घ) lo/12 + bw + 3Df
For L-beams, bf = lo/12 + bw + 3Df; for T-beams it is lo/6 + bw + 6Df (lo = distance between points of zero moment).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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For moderate exposure, IS 456:2000 limits the surface crack width in RCC members generally to:
सही उत्तर: क) 0.3 mm
The assessed surface width of cracks should generally not exceed 0.3 mm; 0.004 times cover is used for aggressive environments.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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