NASCLA Accredited Exam - JJ Johnson Contractor Seminar Actual Exam Questions and Answers, Exams of Law

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NASCLA Accredited Exam - JJ Johnson

Contractor Seminar Actual Exam

Questions and Answers 2024

1. What are 4 types of Steel Decking?: answer- Composite, Roof, Cellular, and Form
2. What are the lengths of Full sheets of Steel Decking?: answer- 12", 18", 24", 30", or 36". All are usually less than 40"
3. Who has full responsibility for Safety on a construction site?: answer- The prime contractor
4. Who is responsible to ensure workers have appropriate eye protection?: - answer- The employer
5. Safety belt lanyard shall be a minimum of?: answer- 1/ inch nylon, w/ max length to provide for a fall of no greater than 6ft. The rope shall have a nominal breaking strength of 5,400 lbs.
6. When should safety nets be provided?: answer-

When workplaces are more than 25 feet above ground or water surface or where use of ladders, scaffolds, catch platforms, temporary floors, safety lines, or safety belts are impractical

7. What are the different types of Safety Equipment?: answer- Head, Eye

and Face, and Respiratory protection. Safety belts, lifelines, lanyards, and safety nets

8. Where should quantities of flammable liquid in excess of 25 gallons be stored in that is acceptable or approved?: Acceptable wooden storage and Approved metal storage cabinets. Cabinets shall be labeled in conspicuous lettering "Flammable- Keep Away from Open Flames"
9. LP-Gas storage outside of buildings for containers waiting use shall be located from the nearest building or group of buildings in accordance to?:
10. 500 lbs or less - 0ft
11. ***501 to 6,000 lbs - 10ft
12. 6,001 to 10,000 lbs - 20ft
13. Over 10,000 lbs - 25ft
14. Clearance and mounting of temporary heating devices are?: 1. Room heater, circulating type - 12" sides, 12" rear, 18" chimney connector
15. ***Room heater, radiant type - 36" sides, 36" rear, 18" chimney connector

11. How far shall heaters used in the vicinity of the combustible tarpaulins, canvas, or similar coverings be located from the coverings?:

10 feet from coverings

12. Material stored inside buildings under construction shall not be placed with what distances?: 6 feet of any hoistway or inside floor openings, ***not within 10 feet of exterior wall which does not extend above the top of the material stored
13. Bagged materials shall be stacked by stepping back the layers and cross-keying the bags at least by how many bags high?: 10 bags high
14. Brick stacks shall not be more than?: 7 feet in height
15. When a loose brick stack reaches a height of 4 feet, it shall be tapered back by how many inches?: 2 inches in every foot of height above the 4- foot level

16. When masonry blocks are stacked higher than 6 feet, the stack shall be tapered back how far?: Back one-half block per Tier above the 6-foot level
17. Used lumber shall have what withdrawn before stacking?: Nails
18. How shall lumber be stacked?: On level and solid supported sills, and stable and self supporting
19. Lumber piles shall not Exceed?: 20 feet in height provided that lumber to be handled manually shall not be stacked more than 16 feet high
20. Wire rope shall not be used if?: In any length of eight diameters, the total number of visible broken wires exceeds 10 percent of the total number of wires, or if rope shows other signs of excessive wear, corrosion, or defect
21. Waste materials - when materials are dropped more than 20 feet to any point lying outside the exterior walls of the building what is needed?: An enclosed chute of wood, or equivalent material, shall be used. Enclosed chute is

a slide, closed in on all sides, through which material is moved from a

high place to a lower one

22. All other hand-held powered tools such as circular saws, chain saws, and percussion tools without positive accessory holding means, shall be equipped with what?: A constant pressure switch that will shut off the power when the pressure is released
23. Compressed air shall not be used for cleaning purposes except when?: - Where reduced to less than 30 p.s.i and then only with effective chip guarding and personal protective equipment which meets the requirements. The 30 psi require- ment does not apply for concrete form, mill scale and similar cleaning purposes
24. Who shall be allowed to operated a powder-actuated tool?: Only employees who have been trained in the operation of the particular tool in used
25. All employees using abrasive wheels shall be protected by?: Eye protection equipment
26. Guarding, all portable, power-driven circular saws shall be equipped with what?: Guards above and below the base plate or

shoe. The upper guard shall cover the saw to the depth of the teeth, except for the minimum arc required to permit the base to be tilted for bevel cuts. The lower

guard shall cover the saw to the depth of the teeth, except for the minimum arc required to allow proper retraction and contract with the work. When the tool is withdrawn from the work, the lower guard shall automatically and instantly return to the covering position.

27. Valve protection caps shall not be used for lifting cylinders from one ver- tical position to another.: Bars shall not be used under valves or valve protection caps to pry cylinders loose when frozen. Warm, not boiling, water shall be used to thaw cylinder loose

28. How should compressed air be secured?: In an upright position at all times except, if necessary, for short periods of time while cylinders are actually being hoisted or carried
29. What distance shall Oxygen cylinders in storage be separated from fuel-gas cylinders or combustible materials (especially oil or grease)?: A min- imum distance of 20 ft (6.1m) or by non- combustible barrier at least 5 ft (1.5m) high having fire-resistance rating of a least one-half hour.
30. Inside of buildings, how shall Gas cylinders be stored?: In a well protected, well-ventilated, dry location, at least 2 ft (6.1m) from highly combustible materials such as oil or excelsior. Cylinders should be stored in definitely assigned places away from elevators, stairs, or gangways. Assigned storage places shall be located where cylinders will not be knocked over or damaged by passing or falling objects, or subject to tampering by unauthorized persons. Cylinders shall not be kept in unventilated enclosures such as lockers and cupboards.

31. How shall a regulator to a cylinder valve be connected?: The valve shall be opened slightly and closed immediately. (The action is generally

termed "cracking" and is intended to clear the valve of dust or dirt that might otherwise enter the regulator.) The person cracking the valve shall stand to one side of the outlet, not in front of it. The valve of fuel gas cylinder shall not be cracked where the gas would reach welding work, sparks, flame, or other possible sources of ignition.

32. All hose in use, carrying acetylene, oxygen, natural or manufactured fuel gas, or any gas or substance which may ignite or enter into combustion, or be in any way harmful to employees shall?: Be inspected at the beginning of each working shift. Defective hose shall be removed from service.
33. When the arc welder or cutter has occasion to leave his work or to stop work for any appreciable length of time, or when the arc welding or cutting machine is to be moved, what should happen?: The power supply switch to the equipment shall be opened.
34. Lifelines. Where a welder must enter a confined space through a manhole or other small opening, what should occur?: Means shall be provided for quickly removing him in case of

emergency. When safety belts and lifelines are used for this purpose they shall be so attached to the welder's body that his body cannot be jammed in a small exit opening. An attendant with a pre-planned rescue procedure shall be

stationed outside to observe the welder at all times and be capable of putting rescue operations into effect.

35. Working Clearances (voltage): 1. Nominal voltage to ground, 0-150 = Minimum clear distance for conditions are 3 ft, 3ft, 3ft
36. Nominal voltage to ground, 151-600 = Minimum clear distance for conditions are 3ft, 3.5ft, 4ft

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36. Minimum Depth of Clear Working Space in Front of Electrical Equipment:
37. Nominal voltage to ground, 601 to 2,500 = Conditions 3ft, 4ft, 5ft
38. Nominal voltage to ground, 2,501 to 9,000 = Conditions 4ft, 5ft, 6ft
39. Nominal voltage to ground, 9,001 to 25,000 = Conditions 5ft, 6ft, 9ft
40. Nominal voltage to ground, 25,001 to 75kV = Conditions 6ft, 8ft, 10ft
41. Nominal voltage to ground, Above 75kV = Conditions 8ft, 10ft, 12ft
42. Each scaffold and scaffold component shall be capable of support, without failure, what?: Its own weight and at least 4 times the maximum intended load applied or transmitted too it
43. Each scaffold unit shall be installed so that the space between adjacent units and the space between the platform and the uprights is?: No more than 1 inc (2.5cm) wide, except where the employer can demonstrate that a wider space is necessary (for example, to fit around uprights when side brackets are used to extend the width of the platform)

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39. Each scaffold platform and walkway shall be?: At least 18 inches (46cm) side
40. The front edge of the platforms shall: Not be more than 14 inches (36cm) from the face of the work, unless guardrail systems are erected

18 / along the front edge and/or personal fall arrest systems are used in accordance with paragraph G

41. The maximum distance from the face for outrigger scaffolds shall be?: 3 inches (8cm)
42. The maximum distance from the face for plastering and lathing operations shall be?: 18 inches (46cm)
43. Each end of a platform, unless cleated or otherwise restrained by hooks or equivalent means, shall?: Extend over the centerline of its support at least 6 inches (15 cm)
44. Each end of a platform 10 feet or less in length shall?: Not extend over its support more than 12 inches (30 cm) unless the platform is designed and installed so that the cantilevered portion of the platform is able to support employees and/or materials without tipping, or has guardrails which block employee access to the cantilevered end
45. On scaffolds where platforms are overlapped to create a long platform, the overlap shall?: Ocurr only over supports, and shall not be less than 12 inches (30 cm) unless the platforms

19 / are nailed together or otherwise restrained to prevent movement

46. Scaffold components manufactured by different manufacturers shall not

20 / be?: Intermixed unless components fit together without force and structural integrity is maintained by the user. Components shall not be modified in order to intermix them unless a competent person determines the resulting scaffold is structurally sound.

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47. Supported scaffold poles, legs, posts, frames, and upgrights shall?: Bear on base plates and mud sills or other adequate firm foundation. Footings shall be level. Unstable objects shall not be used. Front-end loaders and similar equipment shall not be used for support unless they are specifically designed by the manufac- turer. Fork-lifts shall not be sued.
48. Fall protection: Each employee on a scaffold more than 10 feet (3.1m) above a lower level shall be protected from falling to that lower level.: Each employee on a boatswains' chair, catenary scaffold, float scaffold, needle beam scaffold, or ladder jack scaffold shall be protected by a personal fall arrest system. Each employee on a single-point or two- point adjustable suspension scaffold shall be projected by both personal fall arrest system and guardrail system. Each employ on a crawling board (chicken ladder) shall be protected, a guardrail system (200lb minimum) or by 3/4" diameter grabline or equivalent handhold securely fastened beside each crawling board. Each employee on a self- contained adjustable scaffold shall be

22 / protected by a guardrail system (200lb min). Each employ on a walkway lo- cated within a scaffold shall

23 / be protected by a guardrail system (200lb min) installed within 9.5 in of and along at least one side of the walkway. Each employee performing overhand bricklaying operations from a supported scaffold shall be protected from falling from all open sides and ends of the scaffold (except at the side next to the wall being laid) by the use of a personal fall arrest system or guardrail system (200 lbs min).

49. The top edge height of toprails or equivalent member on support scaffolds manufactured or placed in service after January 1, 2000 shall be?: Installed between 38 inches (.97m) and 45 inches (1.2m) above the platform surface. The top edge height on supported scaffolds manufactured and placed in service before Jan 1, 2000 and on all suspended scaffolds where both guardrail and a personal fall arrest system are required shall be between 36 inches and 45 inches. When conditions warrant, the height of the top edge may exceed the 45 inch height, provided the guardrail system meets all other criteria.
50. Scaffold casters and wheels shall be?: Locked with

24 / positive wheel and/or wheel and swivel locks, or equivalent means, to prevent movement of the scaffold while the scaffold is used on stationary

25 / manner.

51. Each employee who is constructing a leading edge 6 feet or more above lower levels shall be protected from falling by a guardrail systems, safety net systems, or personal fall arrest systems.: Exception: When the employer can demonstrate that it is infeasible or creates a grater hazard to use these systems, the employer shall develop and implement a fall protection plan which meets the requirements.