Under OSHA 1926.451, what is the maximum distance from the face of the work allowed for scaffold platforms used for plastering and lathing?
Safety
Question · Easy
What is the OSHA 1926.1153 permissible exposure limit (PEL) for respirable crystalline silica, as an 8-hour time-weighted average?
A plasterer gets wet hydrated lime in the eyes. What is the correct immediate first-aid action?
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Why must plasterers wear impermeable gloves and wash cement or lime off the skin promptly?
OSHA 1926.451 requires supported scaffolds and their components to support their own weight plus at least how many times the maximum intended load?
Question · Medium
When must a competent person inspect a plastering scaffold for visible defects?
At what height above a lower level must each employee on a scaffold be protected from falling?
Except for listed narrow-scaffold types, what is the minimum width of a scaffold platform or walkway under OSHA 1926.451?
OSHA 1926.50(g) requires suitable facilities for quick drenching or flushing of the eyes and body when workers may be exposed to which plastering materials?
A crew will dry-mix bagged sanded stucco in a mortar mixer. Which silica-control approach satisfies OSHA 1926.1153?
Question · Hard
Employees are hanging metal lath from a supported scaffold 12 feet above grade. The platform front edge is 16 inches from the wall. Which fall-protection statement is correct?
Under NAC 624.340, which work is authorized for C-17a lathing but expressly excluded from that subclassification?
Surface Preparation
Before plaster or stucco is applied, the receiving surface must be primarily which of the following?
How should unit masonry be conditioned immediately before a portland-cement plaster scratch or first coat?
What is the usual minimum weight of expanded diamond-mesh metal lath used as an exterior portland-cement plaster base?
What is the purpose of the dimples or crimps in self-furring metal lath?
Over wood-based sheathing that will receive exterior cement plaster, what weather-resistive barrier is the usual code-minimum equivalent?
A foundation weep screed for exterior cement plaster must be placed at least how far above grade?
How should sheets of expanded metal lath be oriented on framed walls?
What are the ASTM C1063 minimum laps for expanded metal lath?
For portland-cement plaster on framed walls, ASTM C1063 limits control-joint panels to what size?
Along framing members, metal lath is typically fastened at what maximum spacing?
A smooth, dense cast-in-place concrete wall will receive cement plaster without metal lath. What surface preparation is required?
When wood lath is used as a plaster base, why are the lath strips spaced with a gap of about 1/4 to 3/8 inch?
How is factory paper-backed metal lath oriented on a wall?
Which metal plaster base is generally permitted to span 24-inch on-center supports?
Where a one-piece plaster control joint is installed, what must happen to the metal lath and the water-resistive barrier?
What is the function of a casing bead (plaster stop) in a lath-and-plaster assembly?
A framed stucco wall changes to a concrete masonry wall in the same plane. What accessory and lath treatment is required at the change of substrate?
ASTM C1063 limits the length-to-width ratio of a cement-plaster panel between control joints to which maximum?
Where is 4-inch or 6-inch strip lath (striplath) required as reinforcement?
Which statement about gypsum lath as a plaster base is correct?
Under NAC 624.340, channel iron used to support fireproof lath and solid plaster partitions is authorized in which subclassification?
What is the difference between cornerite and corner bead in plaster work?
What is the usual minimum ambient and substrate temperature for applying portland-cement plaster unless the work is temporarily heated and protected?
Which gypsum panel is the standard choice for a fire-resistance-rated wall or ceiling in the Gypsum Construction Handbook?
Drywall
How many square feet does one 4-foot by 8-foot gypsum board cover?
Which screw type is used to attach gypsum board to wood framing, and which type is used on steel studs?
Under GA-216 / typical Gypsum Construction Handbook practice, what is the maximum field spacing of screws in the field of gypsum board on walls?
What is the usual maximum nail spacing for gypsum board on ceilings?
ASTM C840 / Gypsum Construction Handbook practice places gypsum-board control joints in unbroken wall planes at about what interval?
What distinguishes a GA-214 Level 5 gypsum-board finish from a Level 4 finish?
Which ceiling system is expressly inside NAC 624.340 subclassification C-17c?
Under NAC 624.340, which statement about acoustical-tile work in the C-17 classification is correct?
A flat ceiling measures 1,280 square feet. The crew will hang 4-foot by 12-foot gypsum boards and allow 15 percent waste. How many sheets should be ordered?
A one-hour listed wall design specifies 5/8-inch Type X board with Type S screws at 8 inches on center at edges and 12 inches in the field. The installer wants to switch to nails at 16 inches on center to save time. What is the correct action?
How many coats of portland-cement plaster are required over metal lath?
Application
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