NCIDQ - IDFX | Chapters 4-5 (copy)

What two things must a designer know about a space before the necessary number of exits can be determined?

Before a designer can determine how many of these are needed, both the floor area and the occupancy group must be known.

In accessibility regulations, what type of provision might require that a certain percentage of seating in an area be accessible?

This is an example of scoping provision.

What is the generic name for fire-rated gypsum wallboard?

Type X is the generic name of this material.

What is an intumescent material?

This is a material that, when exposed to heat, expands rapidly and insulates or fills spaces to prevent the passage of fire and smoke.

What type of gypsum wallboard must be used for fire-rated partitions?

Type X gypsum wallboard must be used for these types of partitions.

What is the minimum diameter of a circle in which a wheelchair can turn?

The minimum diameter for this is 60”.

When a door is approached perpendicularly to its opening, what is the minimum maneuvering clearance for wheelchair access at the strike side of the door opening on the pull side of the door?

The minimum wheelchair maneuvering clearance in this situation is 18”.

How high above the floor must a grab bar be mounted?

This accessibility feature must be mounted between 33” - 36” (840mm and 915mm) above the floor.

What is the maximum allowable slope for an accessible ramp?

The maximum slope for this accessibility feature is 1 vertical unit for every 12 horizontal units, or 8.33%.

In addition to a specific diameter and mounting height, what other handrail feature is required on an accessible stairway?

On an accessible stairway, this feature must extend beyond the upper and lower risers.

Where are detectable warnings required?

These are required on walking surfaces in front of hazardous vehicular areas.

What is the minimum clear floor space required to accommodate one stationary wheelchair?

The minimum clear floor space required for this is 30” x 48” (760mm x 1220 mm).

What is the minimum dimension for the space labeled A?

The minimum width for this passage is 32” (815mm).

What is the minimum clear width of an accessible toilet stall?

60” (1525mm) is the minimum clear width for this accessibility feature.

To be classified as accessible, what is the maximum allowable vertical change in floor level?

To be classified as accessible, this construction element must not have a vertical change exceeding 1/4” (6mm).

For an accessible ramp, what is the maximum rise allowed between landings?

For an accessible ramp, this must be no more than 30” (760mm).

According to the International Building Code (IBC), what is a fire partition, and where is it used?

The IBC defines this as a wall assembly having a fire-resistance rating of one hour, used in

• walls separating dwelling units

• walls separating guest rooms in Group R-1, R-2, and I-I occupancies

• walls separating tenant spaces in covered malls

• corridor walls

What two situations require the construction of a fire bariier?

This type of fire-resistance-rated wall is required as

• a separation where there are different occupancies

• an enclosure where there are vertical exits

What is the maximum percentage of wall or ceiling area that combustible trim (such as trim made of wood) can occupy in a room?

In a room, this material type can occupy no more than 10% of a wall or ceiling area.

What is fire-resistance-rated glazing?

This is glass or some other glazing material that has been tested according to ASTM E119 as part of a fire-resistance-rated wall assembly.

What are the three parts of a means of egress?

Its three parts are

• exit acess

• exit

• exit discharge

What is an exit passageway?

This is a horizontal, fully enclosed, fire-resistance-rated portion of an exit that is used only as a means of egres to an exit discharge or a public way.

What is an occupant load factor?

This is the amount of floor space that a building code presumes is occupied by one person in a particular occupancy.

How is the occupant load of a space calculated?

To calculate this value for a space, the total area in square feet (or square meters) is divided by the occupant load factor.

What is a common path of egress travel?

This is the portion of an exit access that occupants are required to traverse before two separate and distinct paths of egress travel to two exits become available.

What are the two main facors in determining if a space requires two exits rather than just one?

The two main factors that determine how many of these are required are the space’s occupancy and its occupant load.

In a building that has been fully equipped with sprinklers, when two exits are required in a space, what is the minimum separation required?

The minimum separation required is 1/3 the diagonal distance of the space.

What is an exit access travel distance?

This is the distance an occupant must travel from the most remote point within a building to the entrance of the nearest exit.

How is minimum exit width calculated?

This is calculated by multiplying the occupant load of a space by the appropriate factor given in the building code.

For an occupant load greater than 50, what is the absolute minimum corridor width?

In this instance, the minimum corridor width is 44” (1118mm).

Within a means of egress system, what are exit access areas?

Within a means of egress system, these are areas that do not provide a protected path of travel and which lead to the entrance of an exit.

In the International Building Code (IBC), even fire-rated corridors are included in this category.

What is the maximum allowable projection of a door into a corridor when the door is fully opened?

The maximum allowable projection is 7” (178mm).

What is the minimum clear width of an exit door?

The minimum clear width is 32” (813mm).

What is an area of refuge?

This is an area of a building where persons unable to use stairways can safely await instructions or assistance during an emergency evacuation.

If an object is between 27” and 80” (685mm and 2030mm) above the floor, what is the maximum allowable protrusion of that object from the wall?

Under these conditions, an object must not protrude more than 4” (100mm) from a wall.

What is a public way?

This is any street, alley, or similar parcel of land unobstructed from the ground to the sky that is at least 10’ (3048mm) wide and permanently appropriated to the public.

Under what conditions would a wood veneer not have to adhere to flame spread requirements?

When a wood veneer is less than 0.036” (0.9mm) thick and applied to a noncombustible material, these requirements do not apply.

What is compartmentation in interior design?

This is the practice of separating areas of a building with fire-rated construction in order to contain a fire to one area and limit its spread.

Where can information be found regarding the code permitting process, the requried fees for filing, the types of inspections required, and the powers of the building official?

The chapter on administrative requirements in a building code includes these things.

When a zoning ordinance does not allow a particular use for a building, what can the interior designer suggest to the client as a course of action?

When this is the case, the interior designer can suggest that the client apply to the zoning board for a variance to allow a nonconforming use.

On a commercial project, which professional on the design team must the interior designer coordinate with in regard to the location of audio and visual alarms?

The mechanical engineer is responsible for this type of fire safety coordination with the interior designer.

What percentage of the seating provided in restaurants, nightclubs, and churches must be accessible?

At least 5% of seating in these location must be provided for accessibility.

What is a safety data sheet (SDS)?

This is a document provided by a manufacturer containing information about the physcial makeup of a substance, proper storage and handling procedures, and other safety issues.

What are four advantages of using portland cement plaster as a finish material?

As a finish material, this has the advantages of being

• hard and abrasion resistant

• water resistant

• easily formed into curved and ornate surfaces

• a good base for wall tile

What are four disadvantages of using portland cement plaster as a finish material?

As a finish material, this has the disadvantages of being

• more expensive than gypsum wallboard

• slower to construct with than gypsum wallboard

• wet and messy to work with

• challenging to work with, thus requiring more-skilled labor

In regards to construction, what is a plenum?

In commercial construction, this is the space between the building structural roof or floor and the suspended ceiling.

Stainless steel is primarily an alloy of steel and an additional element. Which one?

Chromium is added to steel to create this material.

What is a jalousie window?

This window type consists of individual horizontal pieces of glass that all pivot outward at once for ventiliation.

What are Roman shades?

This type of shade pulls up with a cord into accordion folds.

What are five common types of resilient flooring?

Five common types are

• vinyl

• vinyl composition

• rubber

• cork

• linoleum

What is velvet carpet?

This is a carpet made by a simple weaving method that places all the pile yarn on the face of the carpet.

What are four reasons why carpet cushions are used?

This material is used with carpeting to

• provide support for the pile yarn

• increase dimensional stability

• provide added strength

• give a softer feel underfoot

What is marble?

This is a metamorphic rock that is converted by heat and pressue from limestone into calcite and/or dolomite.

Why would a designer want to use a Wilton carpet?

This carpet type would be used to produce a complex pattern with different surface textures.

In terms of paint, what is the vehicle and how does it work?

This is the liquid portion of paint, composed of a nonvolatile binder and a volatile part called the solvent. The binder combines with the body to form the final film,while the solvent dissolves the binder to allow for application and later either evaporates or dries.

What two paint types are often used to achieve a very durbale surface?

Epoxy and urethane paints are often used to achieve this kind of surface.

What is bookmatching?

This is a method of assembling veneers in which every other piece sliced off the log is turned over.

What is blueprint matching?

This is the most exacting method of matching veneer panels in a room, such that grain continuity is maintained across doors, cabinets, and other obstructions.

What is composite wood veneer?

This is a sustainable product manufactured by laminating veneers from commonly available trees onto an artificial log, which is then sliced to produce the final veneers.

What are two sustainable types of wood flooring?

Two examples of this are

• bamboo

• palm wood

What is required at the top of a partition to accommodate deflection of the floor above?

A slip joint is requried at the top of a partition to compensate for this condition.

What is considered a minimum coefficient of friction for safety?

For safety, a value of 0.5 is considered to be minimum for this coefficient.

What fabric is made from the fibers of the flax plant?

Fibers of this plant are used to make linen.

What is the commonly used measure of a flooring material’s slip resistance?

The coefficient of friction (COF) is typically used as a measure of this characteristic of floorig material.

What is the thin-set method of installing stone flooring?

This method of installing stone flooring uses either a special mortar about 1/8” (3mm) thick or an adhesive.

In this terrazzo floor section, what are the components labeled A, B, and C?

In this floor section, these components are

(A) a divider strip

(B) welded wire fabric reinforcing

(C) cleavage membrane on top of the sand cushion

What are the two broad classifications of paint?

Its two broad classifications are

• water-based

• solvent-based

In terms of wallpaper installation, what is a drop match?

This method of wallpaper installation is used when one piece must be raised or lowered in relation to adjacent pieces to continue the pattern.

What are four common ways to install fabric wallcovering?

This is commonly installed in one of four ways

• applied directly, using an adhesive

• using custom fabric panels

• using a proprietary stretch-wall system

• using acoustic panels

What is tackable acoustic fiberglass?

This is a noncombustible fibrous glass mat bonded with a resinous binder and formed into a rigid board with a finish of thin, rigid fiberglass mesh.

What is high-pressure decorative laminate (HPDL)?

This is a common finishing material used with millwork, made from kraft paper overlaid with a patterened or colored sheet and layer of malamine resin.

What are the four basic types of traditional wood flooring?

The for basic types are

• strip

• plank

• block

• end-grain block

What are four disadvantages of using a thick-set application for stone flooring?

The disadvantages of using this application method for stone flooring include

• added weight to the subfloor

• longer installation time

• additional thickness

• additional cost

What are the three grades of vinyl wallcovering?

This wallcovering material may be graded as

• Type I - light duty

• Type II - medium duty

• Type III - heavy duty

What is the primary benefit of using a hydrophobic fabric wallcovering?

This type of fabric wallcovering does not absorb and hold moisture, so it does not sag or distort.

What is quarter sawing?

This is a method of sawing lumber in which the saw cut line is mostly perpendicular to the tree rings in a quarter section of the log.

Which method of sawing or slicing veneers produces a characteristic cathedral grain pattern in most species of wood?

Plain sawing, or plain slicing, produces this appearance in most wood species.

What is a flitch?

This is the collection of veneers that have been sliced off the same log.

What is furring, and why is it used?

This construction element (either wood strips or light-gage metal) is used as an intermediate attachment when wallboard is applied over concrete or concrete block, or when additional depth is needed for electrical outlets or insulation.

What is wayfinding?

This term describes the process of locating, following, and identifying the route through a building or other space to a specific desired space.

What are the four basic types of signage?

Four basic types of this are

• informational

• identification

• directional

• regulatory

What does the noise reduction coefficient (NRC) of an acoustical ceiling describe?

This term refers to the single-number rating of the average sound absorption of a ceiling over the frequencies of 250 Hz, 500 Hz, 1000 Hz, and 2000 Hz

What are the three common installation methods for acoustical ceilings?

Three common installation methods for these are

• lay-in with exposed grid

• lay-in with tegular grid

• concealed spline

What is the NFPA 701 test?

This is a standard procedure for testing the flammability of draperies, curtains, and other window treatments.

When detailing and specifiying window coverings in a high-rise commercial building, what must the interior designer be concerned with to avoid heat buildup?

To avoid this, the interior designer must consider the space between glass and window coverings.

What is a plenum?

This term refers to the space above a suspended ceiling and below the structural floor above that is used for mechanical systems, wiring, and other services.

What standard test is used to determine the abrasion resistance of woven textile fabrics?

The Wyzenbeek test is used to determine this.

What type of window covering is useful for allowing light and views in one direction while offering privacy and blocking direct sunlight in the opposite direction?

Vertical blinds are useful for achieving this type of visual control.

In the United States, in which seismic design categories is special detailing required for suspended acoustical ceiling?

In the United States, this design consideration is required for suspended acoustical ceiling in seismic design categories D, E, and F.

In new construction, which installation method for tile, stone, or terrazzo flooring is best over a structural floor where excessive deflection is expected?

The full mortar bed method should be used where this condition is expected.