Lecture #2 (FA19) (3).pptx - ART 2223 \u2013 STRUCTURES II LECTURE#2 Lesson Objectives \u2022 Contrast dead loads live and lateral loads \u2022 List sources of

Lecture #2 (FA19) (3).pptx - ART 2223 – STRUCTURES II...

This preview shows page 1 - 12 out of 72 pages.

ART 2223 – STRUCTURES II LECTURE #2
Image of page 1
Lesson Objectives Contrast dead loads, live, and lateral loads List sources of dead and live roof/floor loads Explain how loads are distributed to structural elements Describe the path that loads take through a building
Image of page 2
International Building Code Dead Loads Minimum Required Live Loads Snow Loads Wind Loads Seismic Loads Load Combinations
Image of page 3
Design Dead Loads (IBC Section 1606 & ASCE 7) The weight of materials of construction incorporated into the building, including but not limited to: Walls Floors Roofs Ceilings Stairways Built-in partitions Finishes Cladding and other similarly incorporated architectural and structural items The weight of fixed service equipment, such as: Cranes Plumbing stacks and risers Electrical feeders Heating, ventilating and air-conditioning systems Automatic sprinkler systems
Image of page 4
Dead Loads (IBC Section 1606 & ASCE 7) Textbook Table 8.3a ASCE 7 - Table C3-1
Image of page 5
Dead Loads (IBC Section 1606 & ASCE 7) Textbook Table 8.3a ASCE 7 - Table C3-1
Image of page 6
Live Loads (IBC Section 1607 & ASCE 7) Live Load: A load produced by the use and occupancy of the building or other structure that does not include construction or environmental loads such as wind load, snow load, rain load, earthquake load, flood load or dead load Live Load, Roof: A load on a roof produced: During maintenance by workers, equipment and materials; During the life of the structure by movable objects such as planters or other similar small decorative appurtenances that are not occupancy related; or By the use and occupancy of the roof such as for roof gardens or assembly areas Other Live Loads Partition weight in office buildings with moveable partitions Helipads Heavy Vehicle loads Forklifts and moveable equipment Loads on handrails, guards, grab bars, seats, and vehicle barriers Live loads can sometimes be reduced for structural elements supporting floors with larger tributary areas
Image of page 7
Live Loads (IBC Section 1607 & ASCE 7) Minimum required live loads are shown in ASCE Table 4-1 & IBC Table 1607.1
Image of page 8
Live Loads (IBC Section 1607 & ASCE 7) Minimum required live loads are shown in ASCE Table 4-1 & IBC Table 1607.1
Image of page 9
Snow Loads (IBC Section 1608 & ASCE 7) Regional in character Loading based upon several factors The ground snow loads to be used in determining the design snow loads for roofs shall be determined in accordance with ASCE 7 or Figure 1608.2 for the contiguous United States and Table 1608.2 for Alaska Exposure factor Accounts for terrain and roof exposure conditions Thermal factor Accounts for thermal heat conditions of structure Importance factor Based upon occupancy category given in IBC Table 1604.5
Image of page 10
Snow Loads (IBC Section 1608 & ASCE 7) Flat Roof Snow Load p f = 0.7C e C t I s p g p f =flat roof snow load (psf) C e = exposure factor [ASCE Table 7-2] C t = thermal factor [ASCE Table 7-3] I s = importance factor [ASCE Table 1.5-2] p g =
Image of page 11
Image of page 12

You've reached the end of your free preview.

Want to read all 72 pages?

  • Winter '20
  • Earthquake engineering, Dead and live loads

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

Stuck? We have tutors online 24/7 who can help you get unstuck.
A+ icon
Ask Expert Tutors You can ask You can ask You can ask (will expire )
Answers in as fast as 15 minutes