Chapter 15 Roof Assemblies and Rooftop Structures

Question 1

If flashing was made of metal..

Answer 1

shall be corrosion resistant with the thickness of .019 inch or more

Question 2

Crickets or saddles shall be installed on..

Answer 2

the ridge side of any chimney or penetration greater than 30 inches wide perpendicular to the slope

Question 3

crickets or saddles shall be made of what material?

Answer 3

Sheet metal or same material as roof covering

Question 4

Class A Roof Assemblies…

Answer 4

effective against severe fire test

Question 5

Class B Roof Assemblies…

Answer 5

effective against moderate fire test

Question 6

Class C Roof Assemblies…

Answer 6

effective against light fire test

Question 7

Special wood shingle or wood shake roofing shall have an underlayment of

Answer 7

5/8 inch Type X water resistant gypsum board or
gypsum sheathing

Question 8

Type X water resistant gypsum board or
gypsum sheathing shall be placed under minimum…

Answer 8

1/2 inch wood structural panel solid sheathing or
1 inch nominal spaced sheathing

Question 9

where ice tends to build up an…

Answer 9

ice barrier is needed for asphalt shingles, metal roof shingles, etc..

Question 10

ice barriers shall consist of no less than..

Answer 10

two layers of underlayment cemented together or
self adhering polymer modified bitumen sheet

Question 11

ice barrier shall extend from the lowest edges of all roof surfaces to a point no less than…

Answer 11

24 inches

Question 12

Asphalt shingles shall only have a slope of

Answer 12

17% to 33%

Question 13

Fastenings for Asphalt shingles shall be made of…

Answer 13

Stainless steel, aluminum, or copper roofing nails
minimum 12 gage shank with a 3/8 inch diameter head

Question 14

Penetration of Fastenings for Asphalt shingles

Answer 14

Through roofing materials and no less than 3/4 inch in roof sheathing

Question 15

Asphalt shingles shall have a minimum number of fastenings by manufacturer, but no less than

Answer 15

4 fasteners per strip shingle
or two fasteners per individual shingle

Question 16

Minimum slope for lapped, nonsoldered seam metal roof panels without lap sealant

Answer 16

25% slope

Question 17

Minimum slope for lapped, nonsoldered seam metal roof panels with lap sealant

Answer 17

4% slope

Question 17

Minimum slope for standing-seam metal roof panel system

Answer 17

2% slope

Question 17

Metal roof panels shall be secured to…

Answer 17

The supports with manufacturer’s fasteners

Question 18

Metal roof shingles minimum slope on roof slopes…

Answer 18

25% slope

Question 19

Mineral-surfaced roll roofing minimum slope of roof slopes…

Answer 19

8% slope

Question 20

Wood shingles minimum slope on roof slopes

Answer 20

25% slope

Question 21

Wood shingles shall be laid with a side lap no less than…

Answer 21

1 1/2 inch between joints in adjacent courses

Question 22

Spacing between wood shingles shall be between

Answer 22

1/4 to 3/8 inch

Question 23

Wood shakes minimum slope…

Answer 23

33% slope

Question 24

Wood shakes shall be used on..

Answer 24

solid or spaced sheathing

Question 25

Built-up roofs minimum slope…

Answer 25

1% slope

Question 26

Modified Bitumen roofing slope…

Answer 26

2% slope for drainage

Question 27

Penthouse construction other than Type I shall not exceed

Answer 27

18 feet in height above the roof deck

Question 28

Above Penthouse roof elevator shall not exceed

Answer 28

28 feet in height above the roof deck

Question 29

Mechanical equipment screens shall not exceed

Answer 29

18 feet in height above the roof deck