Group 6.E - Curtain Wall Manual, Part II: Importance of Tolerances and Clearances in Wall Construction

Question 1

A _________ is a permissible permissible amount of deviation from a specified or nominal characteristic, whether it is a dimension, color, shape, composition or other quality.

clearance
factor
coefficient
tolerance

Answer 1

tolerance

Question 2

A _______ is a space or distance purposely provided
between adjacent parts, either to allow for
movements or for anticipated size variations, to
provide working space, or for other reasons.

clearance
factor
coefficient
tolerance

Answer 2

clearance

Question 3

Curtain wall designs should be designed with an effort to ______ tolerances tighter than those given in the referenced standards.

require
minimize
encourage
eliminate

Answer 3

minimize

eliminate

Question 4

It must be understood, however, that the wall can be
installed within the tolerances established only if:

1. The building frame (or contiguous
   construction) is built within the tolerances
   specified for that work
2. The tolerances allowed and clearances provided are minimized within the modules of the building frame
3. The clearance necessary for installation of the wall is coordinated with the wall design and the limits of
   adjustment permitted by its anchorage details.
4. The clearance dimensions shown on the
   architect’s drawings provide adequate
   working space, based on the tolerances allowed

Answer 4

1 and 4

Question 5

Tolerances established by the designer should be both _____ and _____.

precise and minimal
reasonable and practical
general and generous
tight and challenging

Answer 5

reasonable and practical

or realistic

Question 6

the nominal clearance shown to beams
and columns on architectural details never be _______.

Greater than 2”
Greater than 1”
Less than 1”
Less than 2”

Answer 6

Less than 2”

Question 7

The nominal clearance dimension shown on the
drawings, should be _______ the actual clearance
required, (taking access to anchors and minimum fire-safe thickness into account), _____ the outward
tolerance permitted for the adjacent construction.

half of / plus
equal to / minus
equal to / plus
half of / times

Answer 7

equal to / plus

Question 8

Drawings and specifications are ___________ documents and information contained in one _______ duplicated in the other.

overlapping / is typically
complementary / should not be
cross-referencing / must be
collaborative / is always

Answer 8

complementary / should not be

Question 9

________ and ________ are the two basic
documents which the architect develops to convey
the information needed for the construction of any
structure.

details and sketches
drawings and contracts
details and elevations
drawings and specifications

Answer 9

drawings and specifications

Question 10

Drawings and specifications are ___________ documents and information contained in one _______ duplicated in the other.

overlapping / is typically
complementary / should not be
cross-referencing / must be
unrelated / are never

Answer 10

complementary / should not be

Question 11

Drawings and specifications are ___________ documents and information contained in one _______ duplicated in the other.

overlapping / is typically
complementary / should not be
cross-referencing / must be
unrelated / is never

Answer 11

complementary / should not be

Question 12

In the drawings and specifications a ______ must be made between ground floor the storefront areas and the other areas of the wall, as these are ____ installed by the same contractor.

structural connection / always
continuous design / never
non-moving connection / sometimes
clear delineation / often not

Answer 12

clear delineation / often not

Question 13

In the drawings and specifications a ______ must be made between the ground floor storefront areas and the other areas of the wall, as these are ____ installed by the same contractor.

structural connection / always
continuous design / never
non-moving connection / sometimes
clear delineation / often not

Answer 13

clear delineation / often not

Question 14

Curtain wall drawings must show all of the following except the: 
complete curtain wall system
glazing type and coatings
grid framework, panels and fixed glass 
accurate dimensions
operating windows, doors
frame material and section modulus

Answer 14

glazing type and coatings

frame material and section modulus

Question 15

Curtain wall drawings must show all of the following except the:
connections between the wall and the building structure
wind loads and thermal expansion
connection at storefronts, roofs, floors
ceilings, partitions
a precise indication of where the curtain wall scope starts and stops
section weight and alloys of all materials
section drawings sufficient to clearly define the
product requirements

Answer 15

wind loads and thermal expansion

section weight and alloys of all materials

Question 16

Drawings should show the _____of and define the ____ sealants referenced in the specifications.

color / elongation requirements for
location / contractor responsible for
shore A hardness / material of
location / total linear footage of

Answer 16

location and contractor responsible for

Question 17

Consideration of thermal movement in the design is necessary to avoid all but which of the below:

sealant failure
material deformation
damage to adjacent finishes
catastrophic failure
measles
failing the FM exam
angry clients
attorneys

Answer 17

measles

Question 18

Q1:
In wall construction, tolerance is:

interchangeable with clearance
never accepted on the construction site since it can alter appearance
permissible amount of deviation from a specified or nominal characteristic
space or distance between adjacent parts

Answer 18

permissible amount of deviation from a specified or nominal characteristic.

Question 19

Q2:
In wall construction, clearance is:

interchangeable with tolerance
never accepted on the construction site since it can alter appearance
permissible amount of deviation from a specified or nominal characteristic
space or distance between adjacent parts

Answer 19

space or distance between adjacent parts

Question 20

Q3:
Limiting tolerance to less than those in referenced standards often leads to

increased costs
energy efficient buildings
LEED certification
seismic tolerance

Answer 20

increased costs

Question 21

Q4:
Drawings must show all except:

complete curtain wall system
alternate anchorage systems
the grid framework
components of the system

Answer 21

alternate anchorage systems

Question 22

Q5:

The following is true for thermal expansion of building materials:

al building materials will expand at similar rates
all steel types will expand at similar rates
all building materials will expand but at different rates
the color of the paint won’t have any impact

Answer 22

all building materials will expand but at different rates