Steel Design (IS 800) interview questions

1. A.effective gusset width is found by spreading 30 degrees each side from the first bolt row to the last, and the plate must not be thinner than the connected member
2. B.1.10 governs yielding and buckling, 1.25 governs ultimate stress, bolts and shop welds, and 1.50 applies to site welds
3. C.effective throat is 0.7 times the leg size for a 90 degree fillet, and design strength per unit length is throat times fu over √3 γmw
4. D.laterally unsupported beams use Md = βb Zp fbd with fbd reduced through χLT from λLT, and the check is waived when λLT is 0.4 or less

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1. A.Lateral-torsional buckling check
2. B.Slenderness ratio limits
3. C.Material safety factors γm
4. D.Whitmore section for gussets

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1. A.Material safety factors γm — effective gusset width is found by spreading 30 degrees each side from the first bolt row to the last, and the plate must not be thinner than the connected member
2. B.Material safety factors γm — laterally unsupported beams use Md = βb Zp fbd with fbd reduced through χLT from λLT, and the check is waived when λLT is 0.4 or less
3. C.Material safety factors γm — curves a, b, c and d with imperfection factors 0.21, 0.34, 0.49 and 0.76 are chosen from Table 10 by section type, thickness and buckling axis
4. D.Material safety factors γm — 1.10 governs yielding and buckling, 1.25 governs ultimate stress, bolts and shop welds, and 1.50 applies to site welds

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1. A.Table 3 caps KL/r at 180 for compression members under gravity loads, 250 for those loaded only by wind or earthquake and 400 for pure tension members
2. B.effective gusset width is found by spreading 30 degrees each side from the first bolt row to the last, and the plate must not be thinner than the connected member
3. C.plastic sections form a hinge with rotation, compact reach the plastic moment without rotation, semi-compact reach only yield moment and slender buckle locally before yield
4. D.effective throat is 0.7 times the leg size for a 90 degree fillet, and design strength per unit length is throat times fu over √3 γmw

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1. A.Material safety factors γm
2. B.Section classification
3. C.Lateral-torsional buckling check
4. D.Fillet weld throat thickness

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1. A.Section classification — effective gusset width is found by spreading 30 degrees each side from the first bolt row to the last, and the plate must not be thinner than the connected member
2. B.Section classification — Table 3 caps KL/r at 180 for compression members under gravity loads, 250 for those loaded only by wind or earthquake and 400 for pure tension members
3. C.Section classification — 1.10 governs yielding and buckling, 1.25 governs ultimate stress, bolts and shop welds, and 1.50 applies to site welds
4. D.Section classification — plastic sections form a hinge with rotation, compact reach the plastic moment without rotation, semi-compact reach only yield moment and slender buckle locally before yield

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1. A.plastic sections form a hinge with rotation, compact reach the plastic moment without rotation, semi-compact reach only yield moment and slender buckle locally before yield
2. B.curves a, b, c and d with imperfection factors 0.21, 0.34, 0.49 and 0.76 are chosen from Table 10 by section type, thickness and buckling axis
3. C.effective throat is 0.7 times the leg size for a 90 degree fillet, and design strength per unit length is throat times fu over √3 γmw
4. D.Table 3 caps KL/r at 180 for compression members under gravity loads, 250 for those loaded only by wind or earthquake and 400 for pure tension members

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1. A.Slenderness ratio limits
2. B.Bolt bearing capacity
3. C.Whitmore section for gussets
4. D.Fillet weld throat thickness

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1. A.Fillet weld throat thickness — Table 3 caps KL/r at 180 for compression members under gravity loads, 250 for those loaded only by wind or earthquake and 400 for pure tension members
2. B.Fillet weld throat thickness — effective throat is 0.7 times the leg size for a 90 degree fillet, and design strength per unit length is throat times fu over √3 γmw
3. C.Fillet weld throat thickness — laterally unsupported beams use Md = βb Zp fbd with fbd reduced through χLT from λLT, and the check is waived when λLT is 0.4 or less
4. D.Fillet weld throat thickness — plastic sections form a hinge with rotation, compact reach the plastic moment without rotation, semi-compact reach only yield moment and slender buckle locally before yield

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1. A.laterally unsupported beams use Md = βb Zp fbd with fbd reduced through χLT from λLT, and the check is waived when λLT is 0.4 or less
2. B.effective gusset width is found by spreading 30 degrees each side from the first bolt row to the last, and the plate must not be thinner than the connected member
3. C.Vdsb = fub (nn Anb + ns Asb) / (√3 γmb), where the tensile stress area of the threaded part is taken as 0.78 of the shank area
4. D.curves a, b, c and d with imperfection factors 0.21, 0.34, 0.49 and 0.76 are chosen from Table 10 by section type, thickness and buckling axis

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1. A.Column buckling curves
2. B.Bolt shear capacity
3. C.Bolt bearing capacity
4. D.Material safety factors γm

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1. A.Bolt shear capacity — plastic sections form a hinge with rotation, compact reach the plastic moment without rotation, semi-compact reach only yield moment and slender buckle locally before yield
2. B.Bolt shear capacity — effective throat is 0.7 times the leg size for a 90 degree fillet, and design strength per unit length is throat times fu over √3 γmw
3. C.Bolt shear capacity — Vdsb = fub (nn Anb + ns Asb) / (√3 γmb), where the tensile stress area of the threaded part is taken as 0.78 of the shank area
4. D.Bolt shear capacity — curves a, b, c and d with imperfection factors 0.21, 0.34, 0.49 and 0.76 are chosen from Table 10 by section type, thickness and buckling axis

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1. A.Vdpb = 2.5 kb d t fu / γmb, with kb the least of e/3d0, p/3d0 minus 0.25, fub/fu and 1.0
2. B.effective throat is 0.7 times the leg size for a 90 degree fillet, and design strength per unit length is throat times fu over √3 γmw
3. C.Vdsb = fub (nn Anb + ns Asb) / (√3 γmb), where the tensile stress area of the threaded part is taken as 0.78 of the shank area
4. D.1.10 governs yielding and buckling, 1.25 governs ultimate stress, bolts and shop welds, and 1.50 applies to site welds

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1. A.Lateral-torsional buckling check
2. B.Bolt shear capacity
3. C.Bolt bearing capacity
4. D.Section classification

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1. A.Bolt bearing capacity — 1.10 governs yielding and buckling, 1.25 governs ultimate stress, bolts and shop welds, and 1.50 applies to site welds
2. B.Bolt bearing capacity — Vdpb = 2.5 kb d t fu / γmb, with kb the least of e/3d0, p/3d0 minus 0.25, fub/fu and 1.0
3. C.Bolt bearing capacity — plastic sections form a hinge with rotation, compact reach the plastic moment without rotation, semi-compact reach only yield moment and slender buckle locally before yield
4. D.Bolt bearing capacity — Vdsb = fub (nn Anb + ns Asb) / (√3 γmb), where the tensile stress area of the threaded part is taken as 0.78 of the shank area

Answer + AI explanation with Pro

1. A.1.10 governs yielding and buckling, 1.25 governs ultimate stress, bolts and shop welds, and 1.50 applies to site welds
2. B.Table 3 caps KL/r at 180 for compression members under gravity loads, 250 for those loaded only by wind or earthquake and 400 for pure tension members
3. C.plastic sections form a hinge with rotation, compact reach the plastic moment without rotation, semi-compact reach only yield moment and slender buckle locally before yield
4. D.effective throat is 0.7 times the leg size for a 90 degree fillet, and design strength per unit length is throat times fu over √3 γmw

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1. A.Fillet weld throat thickness
2. B.Lateral-torsional buckling check
3. C.Bolt shear capacity
4. D.Slenderness ratio limits

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1. A.Slenderness ratio limits — Vdsb = fub (nn Anb + ns Asb) / (√3 γmb), where the tensile stress area of the threaded part is taken as 0.78 of the shank area
2. B.Slenderness ratio limits — Table 3 caps KL/r at 180 for compression members under gravity loads, 250 for those loaded only by wind or earthquake and 400 for pure tension members
3. C.Slenderness ratio limits — plastic sections form a hinge with rotation, compact reach the plastic moment without rotation, semi-compact reach only yield moment and slender buckle locally before yield
4. D.Slenderness ratio limits — curves a, b, c and d with imperfection factors 0.21, 0.34, 0.49 and 0.76 are chosen from Table 10 by section type, thickness and buckling axis

Answer + AI explanation with Pro

1. A.effective throat is 0.7 times the leg size for a 90 degree fillet, and design strength per unit length is throat times fu over √3 γmw
2. B.effective gusset width is found by spreading 30 degrees each side from the first bolt row to the last, and the plate must not be thinner than the connected member
3. C.curves a, b, c and d with imperfection factors 0.21, 0.34, 0.49 and 0.76 are chosen from Table 10 by section type, thickness and buckling axis
4. D.Vdsb = fub (nn Anb + ns Asb) / (√3 γmb), where the tensile stress area of the threaded part is taken as 0.78 of the shank area

Answer + AI explanation with Pro

1. A.Fillet weld throat thickness
2. B.Lateral-torsional buckling check
3. C.Bolt bearing capacity
4. D.Column buckling curves

Answer + AI explanation with Pro

1. A.Column buckling curves — curves a, b, c and d with imperfection factors 0.21, 0.34, 0.49 and 0.76 are chosen from Table 10 by section type, thickness and buckling axis
2. B.Column buckling curves — plastic sections form a hinge with rotation, compact reach the plastic moment without rotation, semi-compact reach only yield moment and slender buckle locally before yield
3. C.Column buckling curves — effective throat is 0.7 times the leg size for a 90 degree fillet, and design strength per unit length is throat times fu over √3 γmw
4. D.Column buckling curves — Vdpb = 2.5 kb d t fu / γmb, with kb the least of e/3d0, p/3d0 minus 0.25, fub/fu and 1.0

Answer + AI explanation with Pro

1. A.Vdpb = 2.5 kb d t fu / γmb, with kb the least of e/3d0, p/3d0 minus 0.25, fub/fu and 1.0
2. B.plastic sections form a hinge with rotation, compact reach the plastic moment without rotation, semi-compact reach only yield moment and slender buckle locally before yield
3. C.laterally unsupported beams use Md = βb Zp fbd with fbd reduced through χLT from λLT, and the check is waived when λLT is 0.4 or less
4. D.effective throat is 0.7 times the leg size for a 90 degree fillet, and design strength per unit length is throat times fu over √3 γmw

Answer + AI explanation with Pro

1. A.Section classification
2. B.Bolt shear capacity
3. C.Lateral-torsional buckling check
4. D.Whitmore section for gussets

Answer + AI explanation with Pro

1. A.Lateral-torsional buckling check — curves a, b, c and d with imperfection factors 0.21, 0.34, 0.49 and 0.76 are chosen from Table 10 by section type, thickness and buckling axis
2. B.Lateral-torsional buckling check — laterally unsupported beams use Md = βb Zp fbd with fbd reduced through χLT from λLT, and the check is waived when λLT is 0.4 or less
3. C.Lateral-torsional buckling check — Table 3 caps KL/r at 180 for compression members under gravity loads, 250 for those loaded only by wind or earthquake and 400 for pure tension members
4. D.Lateral-torsional buckling check — effective gusset width is found by spreading 30 degrees each side from the first bolt row to the last, and the plate must not be thinner than the connected member

Answer + AI explanation with Pro

1. A.effective gusset width is found by spreading 30 degrees each side from the first bolt row to the last, and the plate must not be thinner than the connected member
2. B.Vdpb = 2.5 kb d t fu / γmb, with kb the least of e/3d0, p/3d0 minus 0.25, fub/fu and 1.0
3. C.Table 3 caps KL/r at 180 for compression members under gravity loads, 250 for those loaded only by wind or earthquake and 400 for pure tension members
4. D.1.10 governs yielding and buckling, 1.25 governs ultimate stress, bolts and shop welds, and 1.50 applies to site welds

Answer + AI explanation with Pro

1. A.Slenderness ratio limits
2. B.Whitmore section for gussets
3. C.Column buckling curves
4. D.Bolt bearing capacity

Answer + AI explanation with Pro

1. A.Whitmore section for gussets — Vdsb = fub (nn Anb + ns Asb) / (√3 γmb), where the tensile stress area of the threaded part is taken as 0.78 of the shank area
2. B.Whitmore section for gussets — Vdpb = 2.5 kb d t fu / γmb, with kb the least of e/3d0, p/3d0 minus 0.25, fub/fu and 1.0
3. C.Whitmore section for gussets — effective throat is 0.7 times the leg size for a 90 degree fillet, and design strength per unit length is throat times fu over √3 γmw
4. D.Whitmore section for gussets — effective gusset width is found by spreading 30 degrees each side from the first bolt row to the last, and the plate must not be thinner than the connected member

Answer + AI explanation with Pro