Metals Flashcards
1 – What is the maximum size opening in steel decking without reinforcement around opening?
6 inches
2 – Which of the below would be proper for attaching cables to open web joist when unloading?
Put cables under bottom chords at 1/3 points
3 – What type of steel decking has wire chases for telephone, electrical, and computer wires?
Cellular decking
4 – Devices designed to mechanically lock concrete and deck together on composite decking are known as which of the below?
Shear connector devices
5 – What is proper way to store steel decking?
1 – Ground storage should be off the ground with one end elevated
2 – If on framing they should be on the frame near a main supporting beam at column or wall
3 – Bundles should always be stored tag side up
4 – All of the above
6 – On an open web joist 43 feet long, what would be the approximate camber needed?
3/4 inch
Note: 20 feet long open web joist camber is - 1/4”
30 feet long open web joist camber is - 3/8”
40 feet long open web joist camber is - 5/8”
50 feet long open web joist camber is - 1” 60 feet long open web joist camber is - 1-1/2” 70 feet long open web joist camber is - 2” 80 feet long open web joist camber is - 2 -3/4”
7 – A typical Joist Girder is designated as 36G9N6K, what would be the depth at mid-span?
36 inches
8 – What is the maximum depth on a longspan joist?
48 inches
Minimum depth is 18”
Minimum open web joist is 8”
Maximum open web joist is 30”
9 – Which of the below would be the best way of storing open web joist on the job site?
Upside down on wooden blocks in a vertical position
10 – What thickness of steel decking would require weld washers?
Less than 0.028 inches thick (which is 22 gauge)
11 – A working area should be how wide when erecting steel decking?
12 feet
12 – Which of the below welds should be used for attaching bridging to open web joist?
One 1/8 inch fillet weld ½ inch long
13 – When installing roof decking, what should be the minimum approximate end lap?
2 inches
14 – How much load should roof and floor steel decking be able to support during erection?
Roof 30 psf and Floor 50 psf
15 – End laps on steel decking is usually fastened which of the below ways?
1 – Screws
2 – Button punching
3 – Welds
4 – All of these
16 – When erecting K-Series Joists supported by masonry or concrete the ends shall extend not less than 4 inches on the wall and rest on a steel plate of not less than what width?
6 inches
17 – What is the minimum thickness of metal decking that welding can be used on side laps?
20 gage
18 – A camber on an open web joist would be doing which of the below?
Flexes up in the middle
19 – Metal decking is typically attached to the building frame with ______________.
1 – Arc puddle welds
2 – Self drilling screws
3 – Pneumatically driven pins
4 – All of the above
20 – Which of the following statements about composite floor decking is false?
1 – Composite floor decking acts as a working platform for other trades
2* – Composite floor decking does not reinforce the slab to carry the design loads applied during the life of the building
3 – Composite floor decking stabilizes the frame of the building
4 – Composite floor decking serves as a concrete form for the lab
21 – When moving steel joist by crane one should:
3 – Attach a hook/cable to the bottom cord at 2 locations about 1/3 from each end
22 – In the open web joist designation of “18K7”, the 7 indicates the _____of the joist.
Chord section
23 – Sweep indicates that the bar joist ______.
Are not installed straight lengthwise
24 – Deep long span joist must bear a minimum of ____ inches on the steel bearing plate if resting on a steel support.
4 inches
Minimum of 6 inches if resting on concrete or masonry support
These minimums also apply to a Long Span and Joist Girder
25 – The minimum bearing depth of an open web steel joist is?
2 ½ inches
26 – When welding longspan joists to steel supports, the welds shall be?
1/4 inch fillet weld 2 inches long
27 – Bridging material intended for use as horizontal bridging is furnished as?
20 foot lengths of angle or round rod
28 – Camber in an open web short span steel joist is?
Optional
29 – When the steel deck is to act as a diaphragm during construction, temporary bracing may be required if:
All deck units are not in place and fully connected
30 – What is the minimum required capacity to use a metal floor deck as a working platform?
50 psf
31 – How should the metal deck erector install the overlaps / endlaps of a roof deck?
3 – The center of the endlaps portions should occur over the support
32 – Which type of metal deck would have a designation 1 ½ x 6 (IR)?
Roof deck
33 – Repair or alteration of a steel joist can only be approved by:
Joist manufacturer
34 – When an Open Web K-Series steel joist is installed over steel supports, what is the minimum bearing distance?
2 ½ inches
35 – What is the maximum distance steel embedded plates should be located from the face of a masonry or concrete wall?
1/2 inch
36 – What is the minimum gauge of metal decking that can be welded on side laps?
20 gauge
37 – When welding metal deck, burn holes are the rule more than the exception, a weld is considered good when_____ of the perimeter of the weld is in contact with the 2 metals.
75 percent
38 – What type of bracing and or bridging is needed to prevent uplift of steel joists?
Bracing and or bridging near the first bottom chord panel point
39 – Where are the joists located on the joist girder supported members?
Top chord panel points
40 – Composite decks are distinguished by the presence of shear connector devices as part of the deck. They are designed to lock the _____and deck together.
Concrete
41 – The nominal thickness of composite deck ranges from ___ to ____.
.03 to .06
42 – The weight of roof deck varies from ___ to ___ PSF (pounds per square foot)
2 to 4