California Lathing and Plastering Contractor (C-35 License) Practice Exam

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• How is substrate moisture content considered in plastering?
• All exterior lath must be made of which material property?
• Strip reinforcement for continuous joints of gypsum lath and joints of dissimilar materials must be at least ___ wide.
• The foil side of insulating gypsum lath is installed facing toward:
• Flat base with backing metal plaster base is Type:
• What is the purpose of applying a scratch coat?
• What is the function of a bonding agent when plastering over non-traditional substrates?
• Type F3/8R metal plaster base must weigh how many pounds per square yard in the listed options?
• Screw studs for non-load-bearing partitions must be fabricated of ______ shaped metal channel:
• What is the difference between 'lath and plaster' and 'plaster over gypsum board'?
• Screeds used to separate or divide plaster surfaces from other similar materials are called?
• Which statement about gypsum lath lengths is NOT true?
• If a building contains six guest rooms, which category does it fall under?
• Special runner track may be installed if which condition is met?
• Which statement is true about floor and ceiling runner tracks for plaster partitions?
• In patching a hole, which step is performed first?
• Welded-wire fabric lath for interior surfaces and protected horizontal exterior surfaces must be fabricated from wire at least No. __ gauge.
• Which of the following may be used with nailing channels?
• How many square inches are in 17 square yards?
• Which type designation corresponds to Flat metal plaster base?
• Which statement about gypsum lath lengths is true?
• Water-repellent fire-resistant building paper is classified as Type III, Grade what?
• Stucco netting may have an unattached backing. Which statement is correct?
• Cornerite legs must be at least how many inches?
• What is typically required to legally operate as a C-35 plastering contractor in California?
• Supporting metal channels for horizontal framing in ceilings, vertical framing in partitions, furring bracing and anchors must be made of which materials?
• How does exterior stucco bonding differ from interior plaster bonding?
• Maximum opening size for welded-wire fabric lath with backing?
• Metal lathing materials may vary from specified weights in accordance with customary mill tolerances established by which organization?
• Attachment clips for flush metal base, serving as grounds for plaster, must be which of the following?
• Finish coat materials commonly used for plastering include which of the following?
• Which statement about prefabricated non-load-bearing studs is true?
• What is the main purpose of a weatherproof barrier behind exterior stucco?
• The underside of an arch, beam, or similar structure is called which term?
• Which types of insurance are typically required for plastering contractors?
• Which Type and Grade classify water-repellent, fire-resistant building paper?
• Bridging sections within a load-bearing stud must be installed how?
• In insulating gypsum lath, the foil side should be installed facing toward:
• Which of the following is true of welded wire fabric lath?
• How are plaster cracks assessed for severity?
• 3/4 rib lath must weigh how many pounds per square foot in the listed options?
• Expansion joints in plastered walls are installed to?
• Cornerite is a shaped reinforcing unit of expanded metal or wire fabric used to reinforce angles.
• The building code defines any building or portion of a building that contains ____ or more guest rooms as a hotel.
• Which statement is true about veneer plaster lath?
• How many square feet are in 17 square yards?
• What is the purpose of cure retardants in hot or dry conditions?
• What is the consequence if the substrate is not sound?
• What is a mechanic's lien, and when can it be filed?
• Which plaster type is generally more breathable?
• Gypsum lath with one hole at 3/4 in diameter for each 16 square inches is called?
• Which of the following is a type of gypsum lath?
• Two bundles of gypsum lath, each with six sheets, would contain how many sheets total?
• Cornerite for reinforcing internal angles over lath must be:
• What is the difference between interior plaster and veneer plaster?
• If a building contains three dwelling units, what category is it?
• Terrazzo screeds must be made of which materials?
• Interior plaster typically uses which type of binder?
• Wire fabric lath may be fabricated with which type of wire?
• Type SFB metal plaster base is which of the following
• Welded-Wire fabric lath must be stiffened in which manner(s)?
• What is the purpose of feathering edges in crack repair?
• Backing for welded-wire fabric lath must meet which requirements?
• What is the purpose of flashing behind stucco at windows and doors?
• Drip screed may be used at foundations, may or may not have weep holes, and may be used at horizontal, external corners of soffits. Which statement is true?
• Channel is ordered in which unit?
• Which technique creates the dash texture in the finish coat?
• What substrate is blueboard used for veneer plaster?
• Backing for welded-wire fabric lath requires which combination?
• A building or portion of a building that contains no more than two dwelling units is defined as a(n):
• What is a plaster contractor's coordinating role?
• Partition bases may be made of which of the following?
• How does aggregate grading affect plaster performance?
• What is veneer plaster, and where is it typically used?
• The perforated gypsum lath has one hole of 3/4 inch diameter for each how many square inches?
• Which plastering method uses gypsum board backing with veneer plaster?
• When installing suspended ceilings, overlap the ends of the main runners by how many inches?
• What practice helps keep consistency on large walls?
• What is the recommended method to patch a large hole in plaster?
• Why is bonding important for C-35 contractors?
• 3/4" channel must weigh at least _____ per 100 lineal feet:
• Gypsum lath should be applied with the long dimension perpendicular to which structural element?
• Which statement about Cornerite is true?
• Which statement best describes metal lath used for plaster and stucco in California?
• What binder does lime plaster use and how does it affect its properties?
• Flat rib lath metal plaster base is Type:
• With nailing channels, which fastening methods are permissible?
• Which material is specified for ventilating expansion screeds used under eaves, corridors, or canopies?
• Wire-fabric lath is fabricated from which material?
• Control joints have which type of flanges?
• Which lath includes backing?
• Welded wire fabric lath with backing must provide metallic reinforcement for plaster:
• Drip screed may be used at foundations and at horizontal, external corners of soffits. Which statement is true?
• Which of the following describes prefabricated studs?
• What is the minimum side lap distance for metal lath?
• Lathing may not cover or conceal reinforcing steel or the structural framework of a building without approval from whom?
• Gypsum lath orientation across supports?
• Base or parting screeds are used to separate plaster surfaces from what?
• Stucco netting is made of wire sized according to the size of the openings.
• Stucco netting for exterior surfaces must have openings no larger than:
• Pre-fabricated studs for non-load bearing partitions must be fastened with which of the following?
• Plain gypsum lath with aluminum foil laminated on one side as a vapor barrier and thermal insulation is called:
• If a building contains two dwelling units, what category is it?
• AISI stands for which organization?
• Which tool is typically used for the final finish of plaster?
• In metal plaster base terminology, what does FRB stand for?
• Cornerite is used to reinforce which feature in plaster lath assemblies?
• What is a common consideration when plastering over gypsum board?
• 3.4 psy metal lath is identified by which color at the ends of lath bundles?
• The NOT a standard thickness of gypsum lath is:
• What is the main substrate preparation for plastering over masonry?
• What is the diameter of No.20 gage wire?
• Conerite lath should be installed after weather protection is in place; which statement is correct?
• Why is proper curing important for plaster?
• Nailable studs for non-load-bearing partitions may be made of which material?
• What is the role of a brown coat in a multi-coat plaster system?
• Which lath type is typically installed after weather protection is in place?
• How should wood lath be fastened in a plaster wall?
• FRB stands for which of the following in metal plaster base terminology?
• The 3/8 rib lath metal plaster base is type?
• Backing is not required under which lath installations?
• External corner reinforcement for Portland cement plaster may be fabricated from which material?
• Which coat is applied directly to the prepared surface to establish bonding with the substrate?
• Which of the following is a correct statement about lathing wire gages?
• What is the function of a scratch comb?
• The type of wire tie used to complete any other simple tie is called what?
• What is the purpose of a control joint in plaster and stucco?
• Veneer plaster is typically applied to which substrates?
• Terminals for solid plaster partitions must be made of at least which material?
• What is the role of the stop-end along edges in plastering openings?
• Flat rib lath must weigh how many pounds per square yard in the listed options?
• In a traditional lath and plaster system, what backs the plaster?
• Cornerite may be omitted in which condition?
• Plain gypsum lath with a core having increased fire retardant properties is called which type?
• Cornerite must be installed to keep its position during plastering at all internal corners.
• Arris is the architectural term for which feature?
• In a three-coat plaster system, which coat primarily provides a smooth surface for the finish coat?
• Lathing may not cover or conceal which elements without building official approval?
• What is the function of flashing behind openings in stucco construction?
• Nailing channel must be slotted or shaped to secure which type of nails?
• What materials are commonly used for the finish coat in plastering?
• Gypsum lath is usually supplied with how many sheets per bundle?
• Welded-wire fabric lath can be applied to which surfaces?
• What are the main lath types used in California for plaster and stucco applications?
• Screw studs for non-load-bearing partitions must be fabricated of:
• What exterior stucco finish is recommended to resist weathering?
• Terrazzo screeds can be made from which materials?
• Plaster that surrounds, penetrates, or deforms to lock onto the perforations of a plaster base is called what?
• What is the typical bond strength challenge when plastering over smooth concrete?
• What provides lateral support for load-bearing studs?
• What is a prevailing wage, and when does it apply?
• Which material is NOT listed as a material for supporting metal channels?
• Which statement about stucco netting backing is correct?
• What is expansion joint, and why is it required in plastered walls?
• The formula for the area of a circle is:
• Which coat is applied first in a three-coat exterior plaster system?
• In the described plastering sequence, what is the final step before curing described?
• Why is documentation important in plastering projects?
• The safe load for a single strand of No. 16 tie wire is:
• What is the meaning of "keying" a plaster surface?
• Partition runner for use as tracks in solid plaster partitions must be formed or punched from galvanized steel at least No. gauge?
• The standard widths of gypsum lath are 16 inches, 24 inches, and 48 inches. Which set lists these widths?
• What is the minimum end lap distance for metal lath?
• What gauge is specified for the flush metal base ground for plaster?
• If there is no external corner reinforcement, how should the lath be installed?
• Which type designation corresponds to Self-Furring metal plaster base?
• Ventilating expansion screeds used for ventilation of air spaces under horizontal or protected vertical surfaces must be made of No. 26 galvanized steel for which areas?
• Perforated gypsum lath has a hole at least 3/4 inch in diameter per how many square inches?
• The wire tie used almost exclusively to attach metal lath to metal supports is called what?
• The purpose of scratching the scratch coat is to:
• Type X gypsum lath is distinguished by which property?
• If no external corner reinforcement is used, the lath must be furred out and carried around corners for at least how many supports on frame constructions?
• External corner reinforcement for Portland cement plaster may be fabricated from:
• What is the typical sequence for a three-coat exterior stucco system?
• Which factor must be within the recommended range to ensure proper bonding and curing of plaster?
• All gages of lathing wire must be:
• Flat metal plaster base is Type which letter?
• Which marking is recommended but not required for 3.4 psy metal lath ends?
• Hanger and tie wire must be which of the following?
• What component provides lateral support for load-bearing studs?
• If a single strand of No.18 wire safely supports 32 pounds, how much will a fully formed loop support?
• How should exterior plaster work be handled under adverse weather?
• How are cracks in plaster typically repaired?
• Which PPE is essential for plastering work?
• Why should the substrate be dampened before plastering?
• Prefabricated, non-load- bearing studs are always:
• Types of gypsum lath include which of the following?
• What is one role of metal lath in plastering?
• Which statements about Cornerite are true?
• Name two common tools used to finish plaster.
• Which of the following is listed as a terminal style for solid plaster partitions?
• Nailable studs must always be which of the following?
• Flush metal base acting as a ground for plaster must be formed of at least No. 18 gauge steel galvanized or coated with rust-inhibiting material. Which gauge is required?
• Under the Building Code, an apartment house is defined as a building or portion that contains how many dwelling units or more?
• In plastering, what is a 'wet edge'?
• Prefabricated non-load-bearing studs may:
• What is the purpose of wire lath on exterior walls?
• Veneer plaster lath must conform to ASTM specifications except for which aspect?
• Welded-wire fabric lath with backing must have openings no larger than which size?
• What is the typical sequence of plastering operations on a new interior wall?
• In metal lath installation, what is the minimum end lap distance?
• Lead-backed lath has sheets of lead laminated on which side to block X-ray transmission?
• The insulating gypsum lath provides which features?
• Why is substrate readiness important before plastering?
• Self-Furring metal plaster base is Type which letter?
• What is the minimum width for strip reinforcement for continuous joints of gypsum lath?
• Lead-backed is a listed type of gypsum lath. Which option correctly identifies this fact?
• Conerite lath should be installed only after what condition is in place?
• What are the three coats of a traditional cement plaster system?
• Floor and ceiling runner tracks to which studs are attached may be:
• What is the main purpose of a weatherproof barrier behind exterior stucco?
• In metal lath installation, what is the minimum side lap distance?
• How should a plastering estimator account for waste in materials?
• All exterior lath must be corrosion-resistant materials.
• Which of the following is NOT a standard width for gypsum lath?
• Wire fabric lath must be manufactured or treated to be what?
• Which coat is applied immediately after the bonding coat in the typical plastering sequence?
• Which practice helps ensure uniform plaster thickness?
• Self-furring diamond mesh must be fabricated from:
• Small or bullnose corner bead may be fabricated from which material/flange?
• Screw channel for cross-furring and for furring walls must have what feature to receive screws?
• What is dash finish in exterior stucco?
• Another name for stucco netting is which of the following?
• The architectural term for an external corner or sharp edge is:
• How are cracks controlled in plaster on exterior walls?