A Mississippi building crew is squaring a 30-foot by 40-foot foundation layout with batter boards and string lines. Which diagonal check confirms the corners are square?
Site Work
Question · Easy
Six feet: a hard-hat anthem
Short
How many cubic yards of soil are removed from a utility trench that is 180 feet long, 2 feet 6 inches wide, and 4 feet deep, before swell is applied?
Question · Medium
A site cut yields 240 cubic yards of bank soil. The soil has a 25 percent swell factor when excavated. How many loose cubic yards must be hauled?
Question · Hard
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When placing structural fill under a building pad, what is the most reliable way to obtain uniform compaction?
Per IBC 2021 requirements for the ground immediately adjacent to a foundation, what is the minimum slope away from the building for the first 10 feet, unless an approved drain is provided?
OSHA fall heights, to scale
On a sanitary sewer profile, the invert elevation of an 8-inch pipe is the elevation of which surface?
A 100-foot by 80-foot building pad must be raised 18 inches with compacted fill. The borrow soil shrinks 12 percent from bank measure to compacted-in-place volume. How many bank cubic yards should be excavated from the borrow pit?
Proof-rolling of a building-pad subgrade is performed primarily to:
A 9-foot by 9-foot concrete slab is 4 inches thick. How many cubic yards of concrete does the slab contain, with no waste allowance?
Concrete
A warehouse slab measures 36 feet by 24 feet by 4 inches. Including an 8 percent waste and subgrade allowance, how many cubic yards of ready-mix should be ordered?
A continuous footing is 160 feet long, 24 inches wide, and 12 inches thick. With a 10 percent waste allowance, how many cubic yards of concrete should be ordered?
Which ASTM C150 portland cement is selected when the schedule requires high early strength so forms can be stripped sooner?
Why is an air-entraining admixture specified for exterior concrete flatwork in a freeze-thaw climate?
A slump test (ASTM C143) on a ready-mix sample is used primarily to check:
Per ACI 318 / CRSI placing practice, what is the minimum concrete cover for reinforcing bars cast against and permanently exposed to earth?
A 24-foot-long grade beam is reinforced with #5 vertical dowels at 12 inches on center, including a dowel at each end. How many dowels are required?
A 5-inch-thick concrete slab-on-grade needs contraction joints. Using the common rule that joint spacing in feet is about 2 to 3 times the slab thickness in inches, what is an appropriate joint spacing range?
What is the nominal diameter of a #6 reinforcing bar?
For ASTM C150 Type I cement in ordinary conditions, ACI curing practice generally requires keeping concrete continuously moist for at least how long?
A post-tensioned slab has reached the specified stressing strength. What is the correct field procedure at the live end?
All else equal, which change most reliably increases compressive strength and durability of a concrete mixture?
Why must finishers wait until bleed water has left the surface before steel-troweling a slab?
An 80-foot foundation has an 8-inch-thick stem wall 8 feet high and a separate 2-foot-wide by 1-foot-thick continuous footing. With a 5 percent waste allowance, how many cubic yards of concrete are required for wall plus footing?
A standard concrete masonry unit that is specified as 8 × 8 × 16 has which actual dimensions, allowing for a 3/8-inch mortar joint?
Masonry
How many standard 8 × 8 × 16 CMU are required for a wall that is 32 feet long and 10 feet high, with no openings and no waste?
A CMU wall is 40 feet long and 8 feet high with no openings. Using 1.125 blocks per square foot and a 5 percent waste allowance, how many 8 × 8 × 16 units should be ordered?
Which mortar type is the general-purpose choice for above-grade, non-reinforced exterior walls with normal loading?
In an exterior masonry veneer, weepholes are required immediately above flashing and, per IBC, at a maximum spacing of:
When grouting reinforced CMU walls in lifts greater than 5 feet (high-lift grouting), cleanouts are provided primarily so that:
Which mortar joint profile is preferred on exterior masonry because it sheds water and compresses the joint surface?
Compared with running bond, stack-bond CMU walls generally require:
A plumber asks to cut an opening through the bottom chord of an open-web steel joist for a 4-inch waste line. The correct response is to:
Metals
During erection of open-web steel joists, horizontal bridging should be installed:
Under OSHA 1926 Subpart R, a structural steel column may be released from the hoisting line only after it is secured with at least:
Except for connectors and controlled decking zones with their own rules, OSHA Subpart R generally requires fall protection for steel-erection workers when the fall distance is:
A rectangular roof is 120 feet by 60 feet. Steel deck is furnished in sheets 3 feet wide (net coverage) by 30 feet long. Ignoring cut waste, how many sheets are required?
A W12×50 beam designation means the member is approximately:
On a welding symbol, the specified size of a fillet weld is the:
During metal-deck erection, deck sheets should be attached to the supporting joists or beams:
Per SJI handling and erection practice, construction loads such as bundles of deck should be placed on open-web joists only when:
High-strength bolts in a slip-critical steel connection must be:
Tag lines are used when hoisting steel members primarily to:
After a steel column is plumbed on leveling nuts or shims, the space under the base plate is typically filled with:
The board-foot measure of a piece of lumber is calculated as:
Carpentry
How many board feet are in 24 pieces of 2 × 8 × 12-foot lumber?
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