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Showing posts with the label Structural Systems

Flying buttress

Which one of the following designed this modern thin shell concrete dome supported by Y-shaped flying buttresses? A. Rafael Gustavino B. Pier Luigi Nervi C. Eugene Freyssinet D. Oleg Kerensky

Calculate beam reaction

Find the reactions indicated in the beam diagram. ( ∑M = 0 ; Moment sum of loads and resisting reaction is equal to zero.)

Open-web steel joist

Which offers the longest span limits: LH, DLH, or K?

Bolted connections

What is the minimum spacing of bolts specified by AISC? and preferred spacing? A. 1 1/4 times the diameter of the bolt; 2 times preferred B. 1 3/4 times the diameter of the bolt; 2 1/4 times preferred C. 2 1/3 times the diameter of the bolt; 2 2/3 times preferred D. 2 2/3 times the diameter of the bolt; 3 times preferred E. 3 times the diameter of the bolt; 3.25 times preferred

Spread footings

Which of the following footings is commonly used when a series of columns is adjacent to the property line but there is not enough space for a symmetrically loaded footing (can't overlap the neighboring property)? A. independent column footing B. combined footing C. strap footing D. cantilever footing E. raft foundation

Wood Connectors

The special connection hardware in this image is a A. joist hanger, B. post cap, C. post base D. saddle hanger, E. U hanger

Rain loads

When a roof drain becomes blocked, water is allowed to accumulate. IBC Chapter 16 requires that roofs should be designed to account for this potential load. How is the anticipated depth of water determined?

Hurricane intensity

What is the preferred preliminary measure of hurricane intensity? A. Modified Mercalli Intensity scale, B. "mean recurrence interval" or "return period" of 50-year storm, C. Saffir-Simpson scale, D. Richter scale

Loads on beams

Solving for reactions on a beam, a concentrated load acting at midpoint is equivalent to a: A. uniformly distributed load of equal magnitude, B. uniformly distributed load of equal magnitude acting at midpoint, C. uniform load of one half magnitude acting at midpoint, D. concentrated load of half magnitude acting at midpoint

Framing systems

Which of the following framing systems can be built using either steel or concrete? A. moment resisting   B. trussed tube C. framed tube   D.  chevron braced

Steel properties

Which of the following types of steel can have on average up to 1/2 percent (0.25-0.55%) copper content?  A. structural steel, B. alloy steel, C. weathering steel, D. stainless steel

Slender columns

Slender columns have a greater tendency to fail in which of the following ways? A. corrosion, B. fatigue, C. fracture, D. buckling, E. thermal shock, F. impact, G. creep

Free to rotate and translate?

What type of connection is free to rotate and translate along a surface (horizontal, vertical or sloped) producing a reaction force that is always a single force perpendicular to the surface? A. Fixed B. Pinned C. Roller

Foundation Piles 2

Four 12 inch diameter piles (each of whose frictional capacity is 300 psf) support a column carrying 120 kips total load. How deep must each pile be to support the load? A. 24 ft B. 30 ft C. 32 ft D. 40ft