Building Construction Flashcards

1
Q

Post ‘59 buildings have tie rods installed every ___ feet to attach the walls to the rafter

A

Every 4’

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2
Q

According to book 29, when “analyzing the situation” during a size up, what should the first consideration be?

A

Type and construction of the building

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3
Q

According to book 29, what is the size of the rolled tubing in open web trusses?

A

1-2” cold rolled steel

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4
Q

According to book 29, a single family dwelling using rough cut 2”x4” studs and 1”x6” rafters with a ridge board or just butted together is considered what type of construction?

A

Bungalow

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5
Q

A single lightweight truss structural member can span how far?

A

70 feet

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6
Q

Gable roof Rafter size Spacing

Conventional 2x6 or larger 16”-24”

Leightweight 2x3 or 2x4” 24”

Steep pitch 36”

A

No answer

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7
Q

What is the most common size of for metal gusset plate connectors?

A

18 gauge with prongs that penetrate 3/8”

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8
Q

What decking is found on conventional gable roofs? Lightweight?

A

Conventional- 1”x6” space sheating

Leightweight- 3/8” or 1/2” plywood

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9
Q

What is a jack rafter?

A

A rafter that extends from an outside wall but does NOT reach the ridge board

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10
Q

When were bridge truss roofs constructed?

A

1930’s-40’s

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11
Q

The wooden truss members of bridge truss roofs are what size?

A

2”x12”

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12
Q

What are the sizes of the rafters on bridge truss roofs?

A

2x6” or larger

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13
Q

What type of sheating is found on bridge truss roofs?

A

1x6 straight or diagonal

Straight pre ‘33

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14
Q

When were bowstring arch truss roofs constructed?

A

1930’s, ‘40’s, ‘50’s

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15
Q

What size lumber is the arch truss made of?

A

2”x12” or 2”x14”

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16
Q

What size rafters are on bowstring arch truss roofs?

A

2”x6” or larger

17
Q

What size are the rafters and sheating on lamella arch roofs?

A

Rafters- 2”x12” or larger

Sheating- 1”x6”

18
Q

Lamella arch roofs will have complete failure when what percent of the roof is severely damaged?

A

20%

19
Q

The bottom cord of tied truss roofs are made of what?

A

5/8” tie rods

20
Q

What size rafters are on tied truss roofs?

A

2”x10” or larger

21
Q

What size are the rafters on sawtooth roofs?

A

2”x8” or larger

22
Q

What size rafters are on conventional flat roofs?

A

2”x6” or larger

23
Q

Where are nailing blocks found?

A

Perpendicular to rafters spaced every 4’

24
Q

Spans of leightweight roofs

Wooden I beam?

Open Web?

Metal gusset plate?

Panelized?

A

Wooden I Beam- 70’

Open web- 70’ Bar joist- 45’

Metal gusset plate- 80’

Panelized- no limit

25
Q

What are the sizes and spans of the members of a panel?

A

Beams- 6”x36” spaced 12’ to 40’

Purlins- 4”x12” spaced 8’

Rafters- 2”x3” or 2”x4” spaced 24”

26
Q

What are the strong points of a panel?

A

Beams, purlins, exterior wall

27
Q

What are the sizes of the top and bottom cords of an open web bar joist roof?

What is the max span?

A

1/8” steel

Span 45 feet

28
Q

How thick is the concrete on a leightweight concrete roof?

A

3” to 4”

29
Q

What blades on the rotary saw can be used to cut leightweight concrete roofs?

A

Diamond blade or carbide tip

30
Q

How high can the parapet be on pre ‘33 buildings? What if a facade is in front?

A

3 feet

5 feet is a facade is in front

31
Q

What year was a 4”-6” bond cap on parapets along public walkways, 16” parapet walls, and rafter tie plates required?

A

1959

32
Q

Kings row are placed every how many rows?

A

4-7

33
Q

Concrete tilt ups have a max height of how many stories?

A

5

34
Q

What is the primary danger of URM walls?

A

Collapse of front and rear wall

35
Q

What is the safe area of a URM building?

A

Corners and distance equal to the height of the walls

36
Q

The top chord of a truss is under ____?

The bottom chord is under ___?

A

Top chord- compression

Bottom chord- tension