e) 27.For the last few decades, the following methods have been adopted for making structural steel connections: a) Bolting and welding. b) Welding and riveting. c) Riveting and bolting d) Bolting only. e) Welding only. 28.The are primarily used in light structures subjected to static loads and for secondary members (such as purlins, girts, bracing, platforms, small trusses, and so forth): a) A490 bolts. b) A325 bolts. c) A307 bolts. d) A449 bolts. e) A354 threaded rods. 29. When a given bolted joint is subjected to appreciable load reversal such seismic loading, it is necessary to use: a) Butt bolted joint. b) Pretensioned bolted joint. c) Riveted joint. d) Snug-tight Bolted Joint. e) Lap bolted joint. 30.To achieve full pretensioning of high-strength bolts. The following method of tightening bolts is quite satisfactory and will result in lower labor costs: a) Bolts with splined ends. b) Direct Tension Indicator. c) Calibrated Wrench Method.