SC General Contractor flashcards
SC General Contractor · Build recall with a focused review session.
32 cards. Read the term and the definition here. The deck at the top of this page is optional.
- Critical Path
- The longest sequence of dependent activities through a project network; it determines the minimum project duration and has zero total float.
- Total Float Formula
- Total float equals late start minus early start, or late finish minus early finish; an activity with zero total float is critical.
- Cost Performance Index
- CPI equals earned value divided by actual cost; a value below 1.0 indicates the project is over budget.
- Schedule Performance Index
- SPI equals earned value divided by planned value; a value below 1.0 indicates the project is behind schedule.
- Liquidated Damages
- Predetermined money amount per day of delay; enforceable when it is a reasonable forecast of probable loss rather than a penalty.
- Substantial Completion
- The stage when work is sufficiently complete for the owner's intended use; it starts warranty periods and the punch list.
- RFI Versus Submittal
- An RFI requests clarification or information; a submittal transmits product data or shop drawings for review and approval.
- Bid Bond
- A bond usually equal to 5 percent of the bid; it guarantees the bidder will sign the contract and furnish required bonds.
- Performance Bond
- A bond usually equal to 100 percent of the contract price; it protects the owner if the contractor fails to perform.
- Payment Bond
- A bond usually equal to 100 percent of the contract price; it protects subcontractors and suppliers from nonpayment on the project.
- Addendum
- A written modification to bidding documents issued before bid opening; bidders must acknowledge it and incorporate it into their bid.
- Unit Price Precedence
- In bid conflicts, the unit price normally prevails over the extended total, and written words normally prevail over figures.
- Constructive Change
- An owner action or inaction that requires extra work without a formal change order; it may support a cost or time claim.
- Scale Factor
- A drawing scale of 1/4 inch equals 1 foot means one drawing inch represents 48 real inches, or four feet.
- Board Foot Formula
- Board feet equals thickness in inches times width in inches times length in feet, divided by 12.
- Concrete Volume
- Volume equals length times width times depth in consistent units; order 5 to 10 percent extra for waste and spillage.
- Number 4 Rebar
- A number 4 reinforcing bar is 1/2 inch in diameter and weighs about 0.668 pounds per linear foot.
- Contour Lines
- Lines on a drawing connecting points of equal elevation; closely spaced contours indicate steep slopes and widely spaced contours indicate gentle slopes.
- Crew Hours Formula
- Crew labor hours equal total quantity divided by the crew's output per hour; multiply by crew size to get individual worker hours.
- Water-Cement Ratio
- The ratio of water weight to cement weight in concrete; lower ratios increase strength and durability, while higher ratios improve workability but reduce strength.
- Slump Test
- A field test that measures fresh concrete workability; the measured slump must fall within the specification limits for the placement.
- Concrete Cover
- The minimum distance from reinforcing steel to the concrete surface; concrete cast against earth typically requires 3 inches of cover.
- Proctor Test
- A laboratory test that determines a soil's maximum dry density and optimum moisture content for compaction control in the field.
- Nominal Lumber Size
- The labeled size of lumber before surfacing; a nominal 2 by 4 is actually 1-1/2 by 3-1/2 inches when dry.
- Weep Holes
- Openings in a retaining wall or masonry veneer that allow water to drain and relieve hydrostatic pressure behind the wall.
- Sling Tension
- Tension in a sling increases as its angle from horizontal decreases; for two equal legs, each tension is load divided by twice the sine of the angle.
- Fall Protection Threshold
- OSHA requires fall protection for construction workers exposed to falls of 6 feet or more above a lower level.
- Trench Protective System
- Required for excavations 5 feet or deeper unless a competent person determines stable rock or no hazard exists.
- Competent Person
- A person capable of identifying existing and predictable hazards and authorized to take prompt corrective action; required to inspect trenches daily.
- GFCI Protection
- A ground-fault circuit interrupter protects workers from electrical shock by quickly shutting off power; required for temporary construction power.
- Fatality Reporting Rule
- Employers must report a work-related fatality to OSHA within 8 hours and a hospitalization, amputation, or eye loss within 24 hours.
- Stormwater Construction Permit
- Construction disturbing 1 acre or more requires NPDES permit coverage and a stormwater pollution prevention plan addressing erosion and sediment control.