Structure Engineering - notes for GATE, PSUs- part 2

Hello There,
I am in just, to post some one liner statements from steel structure design which, might be helpful to anyone.

• As per IS: 800, the rivets subjected to combined tensile and shear  stresses are proportioned such as  [fs/ps]+[ft/pt] <= 1.4
• According to IS specifications, the maximum pitch of rivets in compression is lesser of 200 mm and 12t.
• A circular column section is generally not used in actual practice because it is difficult to connect beam to round sections.
• The slenderness ratio of a column supported throughout its length by masonry wall  is zero.
• According to IS specifications, the effective length of a column effectively held in position at both ends and restrained in direction at one end is taken as 0.8L.
• The effective length of a battened strut effectively held in position at both ends but not restrained in direction is taken as 1.1L.
• The maximum slenderness ratio of a compression member carrying both dead load and live load is 180.
• The maximum slenderness ratio of a steel column design of which is governed by wind or seismic forces is 250.
• According to IS:800, in the merchant - Rankine formula the value of imperfection index(n) is 1.4
• If 20mm rivets are used in lacing bars, then the minimum width of lacing bar should be 60mm.

Thanks for visiting!

Reference: Civil Engineering Objectives - S P Gupta and S P Gupta