NASCLA ACCREDITED EXAM 2023-2024 ACTUAL EXAM 250 QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES (VERIFIED ANSWERS) | AGRADE

NASCLA ACCREDITED EXAM 2023-2024 ACTUAL

EXAM 250 QUESTIONS AND CORRECT DETAILED

ANSWERS WITH RATIONALES (VERIFIED ANSWERS)

| AGRADE

Where should quantities of flammable liquid in excess of 25 gallons be

stored in that is acceptable or approved? - ANSWER- Acceptable

wooden storage and Approved metal storage cabinets. Cabinets shall be

labeled in conspicuous lettering "Flammable-Keep Away from Open

Flames"

LP-Gas storage outside of buildings for containers waiting use shall be

located from the nearest building or group of buildings in accordance to?

- ANSWER- 1. 500 lbs or less - 0ft

2. ***501 to 6,000 lbs - 10ft

3. 6,001 to 10,000 lbs - 20ft

4. Over 10,000 lbs - 25ft

Clearance and mounting of temporary heating devices are? - ANSWER1. Room heater, circulating type - 12" sides, 12" rear, 18" chimney

connector

2. ***Room heater, radiant type - 36" sides, 36" rear, 18" chimney

connector

How far shall heaters used in the vicinity of the combustible tarpaulins,

canvas, or similar coverings be located from the coverings? - ANSWER10 feet from coverings

Material stored inside buildings under construction shall not be placed

with what distances? - ANSWER- 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

Bagged materials shall be stacked by stepping back the layers and crosskeying the bags at least by how many bags high? - ANSWER- 10 bags

high

Brick stacks shall not be more than? - ANSWER- 7 feet in height

When a loose brick stack reaches a height of 4 feet, it shall be tapered

back by how many inches? - ANSWER- 2 inches in every foot of height

above the 4-foot level

When masonry blocks are stacked higher than 6 feet, the stack shall be

tapered back how far? - ANSWER- Back one-half block per Tier above

the 6-foot level

Used lumber shall have what withdrawn before stacking? - ANSWERNails

How shall lumber be stacked? - ANSWER- On level and solid supported

sills, and stable and self supporting

Lumber piles shall not Exceed? - ANSWER- 20 feet in height provided

that lumber to be handled manually shall not be stacked more than 16

feet high

Wire rope shall not be used if? - ANSWER- 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

Waste materials - when materials are dropped more than 20 feet to any

point lying outside the exterior walls of the building what is needed? -

ANSWER- 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

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? - ANSWER- A constant pressure switch that will

shut off the power when the pressure is released

Compressed air shall not be used for cleaning purposes except when? -

ANSWER- 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 requirement does not apply for concrete

form, mill scale and similar cleaning purposes

Who shall be allowed to operated a powder-actuated tool? - ANSWEROnly employees who have been trained in the operation of the particular

tool in used

All employees using abrasive wheels shall be protected by? - ANSWEREye protection equipment

Guarding, all portable, power-driven circular saws shall be equipped

with what? - ANSWER- 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.

Valve protection caps shall not be used for lifting cylinders from one

vertical position to another. - ANSWER- 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

How should compressed air be secured? - ANSWER- In an upright

position at all times except, if necessary, for short periods of time while

cylinders are actually being hoisted or carried

What distance shall Oxygen cylinders in storage be separated from fuelgas cylinders or combustible materials (especially oil or grease)? -