 |  Load Analysis Dead, Live, Wind, Seismic 52 Flashcards |  Start |
 | What does the letter 'D' represent in structural load analysis? |  Card: 1 / 52 |
| Dead loads - permanent gravity loads from structure and fixed elements | Card: 2 / 52 |
| True or False: Live loads remain constant over time like dead loads. | Card: 3 / 52 |
| False. Live loads are transient and variable, changing based on occupancy and use. | Card: 4 / 52 |
| Normal weight concrete has a unit weight of _____ lb/ft³. | Card: 5 / 52 |
| 145-150 | Card: 6 / 52 |
| Which exposure category represents open terrain with scattered obstructions? | Card: 7 / 52 |
| C) Exposure C | Card: 8 / 52 |
| What is the minimum live load for office occupancy? | Card: 9 / 52 |
| 50 psf | Card: 10 / 52 |
| Calculate dead load using: D = Σ(Volume × _____) | Card: 11 / 52 |
| Γ (unit weight) | Card: 12 / 52 |
| Why can live loads be reduced for large tributary areas? | Card: 13 / 52 |
| Probability that maximum load occurs simultaneously over large areas is low | Card: 14 / 52 |
| What are the three main exposure categories for wind load analysis? | Card: 15 / 52 |
| Exposure B (urban), Exposure C (open), Exposure D (coastal) | Card: 16 / 52 |
| True or False: Structural steel has a unit weight of 490 lb/ft³. | Card: 17 / 52 |
| True | Card: 18 / 52 |
| For interior columns, the live load element factor KLL equals _____. | Card: 19 / 52 |
| 1 | Card: 20 / 52 |
| Which structural system has R = 8? | Card: 21 / 52 |
| B) Concrete special moment frame | Card: 22 / 52 |
| What does SDS represent in seismic design? | Card: 23 / 52 |
| Design spectral response acceleration at short periods | Card: 24 / 52 |
| The velocity pressure formula is: qz = 0.00256 Kz Kzt Kd _____² | Card: 25 / 52 |
| V (basic wind speed) | Card: 26 / 52 |
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| What is the seismic importance factor for Risk Category II buildings? | Card: 27 / 52 |
| Ie = 1.0 | Card: 28 / 52 |
| True or False: Live load reduction is permitted for loads exceeding 100 psf. | Card: 29 / 52 |
| False. Generally no reduction is permitted for live loads exceeding 100 psf. | Card: 30 / 52 |
| In the load combination 1.2D + 1.6L, what design method is used? | Card: 31 / 52 |
| Strength design (LRFD - Load and Resistance Factor Design) | Card: 32 / 52 |
| What happens to internal pressure coefficient as building enclosure decreases? | Card: 33 / 52 |
| Internal pressure coefficient increases (enclosed ±0.18, partially enclosed ±0.55) | Card: 34 / 52 |
| Site Class D typically represents what type of soil condition? | Card: 35 / 52 |
| Stiff soil | Card: 36 / 52 |
| The minimum roof live load Lr ranges between _____ and _____ psf. | Card: 37 / 52 |
| 12 and 20 | Card: 38 / 52 |
| Which load combination includes the 0.9D factor? | Card: 39 / 52 |
| B) 0.9D + 1.0W | Card: 40 / 52 |
| True or False: Seismic base shear formula is V = Cs × W. | Card: 41 / 52 |
| True | Card: 42 / 52 |
| What does the coefficient Ct represent in approximate period calculation? | Card: 43 / 52 |
| Building period coefficient based on structural system type | Card: 44 / 52 |
| Why is 0.2SDS×D included in seismic load combinations? | Card: 45 / 52 |
| Accounts for vertical seismic acceleration effects on dead load | Card: 46 / 52 |
| Gust effect factor G for rigid structures typically equals _____. | Card: 47 / 52 |
| 0.85 | Card: 48 / 52 |
| How does tributary area affect live load reduction calculations? | Card: 49 / 52 |
| Larger tributary areas allow greater live load reduction per formula | Card: 50 / 52 |
| True or False: Wind directionality factor Kd for buildings is 1.0. | Card: 51 / 52 |
| False. Wind directionality factor Kd for buildings is 0.85. | Card: 52 / 52 |
| Completed! Keep practicing to master all of them. |  Restart |
