Building Construction Flashcards
Roof Decks
- Can be plywood, wood planks, corrugated steel, precast gypsum or concrete planks
- Wood panel: 1/2” on supports 24” on center
- Wood planks: Minimum 1” nominal thickness
- Corrugated steel: 29 gauge (thinnest) to 12 gauge (thickest); Depth ranges from 3/4-2”
- Gypsum: Nailable
Civil engineering
- Water supply
- Sanitary sewers
- Surveying
- Site prep and excavation
- Roadways
- Storm water drainage
Structural engineering
- Determination of loads
- Foundation design
- Structural behavior
- Structural members
- Structural erection
Mechanical engineering
- HVAC
- Pumping systems
- Elevators
- Plumbings systems
Electrical engineering
- Lighting
- Power
- Communications
Fire protection engineering
- Automatic sprinklers
- Standpipes
- Fire alarm
- Smoke control
- Code compliance
Type IIIA is required to have a ___ fire resistive rating for interior members
1 hour
- Note: Type III B has no fire resistive rating for interior members
Columns
- Support an axial load
- Stresses are primarily compressive
- Not designed to withstand stresses due to bending
- Tall, thin columns fail by buckling
- Short, squatty columns fail by crushing
Smoke developed rating
- Measure of the relative visual obscurity created by the smoke from tested material
Axial load
- Load applied to center of the cross-section of a structural member and perpendicular to that cross section
- Can be compressive or tensile
- Creates uniform stresses acros the cross-section of the material
Eccentric Load
- Load that is perpendicular to the cross section of the structural member but does pass through the center of the cross section
- Creates stresses that vary across the cross section
- May be both tensile and compressive
Torsional load
- Offset from the center of the cross section of the structural member and at an angle to or in the same plane as the cross section
- Produces twisting effect that creates sheer stresses in a material
Tension
- Tends to pull a material apart
Compression
- Tends to squeeze the material
Shear
- Tend to slide one plane of a material past an adjacent plane
NFPA 90A Standard for the Installation of Air-Conditioning and Ventilation Systems
- 1 hour - Buildings less than 4 stories
- 2 hour - Building 4 stories or greater
Transformers
- 3 hour enclosure if not protected by sprinklers
- 1 hour enclosure if protected by sprinklers
Footing
- Widened base at the bottom of a column or foundation wall
Thermoplastic Composite Lumber
- Wood-like product made from wood fiber and polyethylen or PVC
- Alternative to preservative-treated lumber
- Used for outside decks and railings
Precast concrete slabs
- Solid slabs - Up to 30ft
- T slabs - Up to 120 ft
Gable roof
2 inclined surfaces that meet at their high side to create a ridge

Hip roof
Slopes in 4 directions

Gambrel roof
Slopes in 2 directions, but there will be a break in the slope on each side
Space created can be used as an attic or living space

Mansard roof
Has the break in the slope of the roof on all 4 sides
Forms a projection beyond the building wall that creates a concealed space though which fire can communicate



