NC Building Exam 2021-Steel Joists

What are the three procedures considered mandatory when receiving a load of trusses and girders

(1.) Inspection of load to make sure product hasn't shifted or if there are any broken banding. Could be dangerous when offloading. (2.) Inspection of the joist products for evidence of physical damage (3.) Verification of items being delivered by comparing the piece count and description of the delivery ticket or bill of lading

Typical Angle sizes are for bridging are?

1" x 1" or 2-1/2" x 2-1/2"

Osha requires that a bundle of bridging not exceed a total of __?__ lbs.

1,000 lbs

The appropriate camber for a 60-foot joist is __?__-inches. Camber is __?__

1-1/2-Inches / Optional

Page 73 Become familiar with the list of "Don't do these things", 1-12

1. Don't pull or push joists off a delivery truck, or drop them in any way 2. Don't lift bundles of joist products by their strapping 3. Don't attach cables, chains or hooks to the web members or joists 4. Don't store joists on their sides 5. Don't place construction loads on unbridged joists 6. Don't cause damage to the joists when field welding 7. Don't cut away vertical leg of bridging where bridging makes an elevation transition; weld separate piece of bridging at transition 8. Don't use tack welds to secure lower chord bridging 9. Don't use a burn-through technique to weld lower chord bridging 10. Don't overload joists 11. Don't place joists between panel points on Joist Girders unless specifically shown on the Joist placement plans 12. Don't repair or alter joists without the approval of the registered design professional and/or the joist manufacturer.

The minimum depth of a SJI type B Longspan Joists, LH-Series is __?__

18-inches

Understand Page 4 and 5

18K7

With respect to horizontal bridging the minimum lap is __?__ to __?__ inches.

2-inches to 4-inches

Joist Girder depths vary from __?__ to __?__ inches

20 to 120

Joist Girder lengths range from __?__ to __?__ feet.

20 to 120

Joist bridging is normally __?__ feet in length

20-Feet

The bridging is typically furnished as an angle shape in standard __?__ feet lengths

20-Feet

The lengths of a SJI type B Longspan Joists, LH-Series range from __?__ to -__?__

21-feet to 96-feet

Table 5.4.1; Number of rows of bridging required for a 38-foot joist with #8 cord member - __?__ rows

3 rows

What is the minimum weld length for a weld leg size of 1/8 (1/8-inch) to provide 700 lb nominal strength for K-Series Joists?

3/8 (3/4-Inch)

The maximum depth of a SJI type A Open Web Steel Joists, K-Series is __?__

30-inches

The ends of a longspan or deep longspan steel joist must extend a minimum distance of __?__ inches over a steel support

4-Inches

The maximum depth of a SJI type B Longspan Joists, LH-Series is __?__

48-inches

What is the minimum weld length for a weld leg size of 5/32 (-inch) to provide 700 lb nominal strength for K-Series Joists?

5/16 (5/8-inch)

The minimum depth of a SJI type C Deep Longspan Joists, DLH-Series is __?__

52-inches

The standard bearing depth of a joist girder is __?__ for underslung

7-1/2-inches

What is the minimum weld length for a weld leg size of 7/64 (1/8-inch) to provide 700 lb nominal strength for K-Series Joists?

7/16 (1-Inch)

Bridging must be capable of resisting a horizontal force of not less than __?__ lbs.

700 lbs.

Table 8-1; Weld to provide minimum __?__ lbs. normal strength for __?__ series joists

700 lbs. / K-Series

The maximum depth of a SJI type C Deep Longspan Joists, DLH-Series is __?__

72-inches

The minimum depth of a SJI type A Open Web Steel Joists, K-Series is __?__

8-Inches

The lengths of a SJI type A Open Web Steel Joists, K-Series range from __?__ to -__?__

8-feet to 60-feet

Become familiar with Figure 5.2

Become familiar with the proper orientation of square-ended joist girders. Particular attention must be paid to the setting of square-ended joist girders right side up. In most cases the first diagonal web member from the support end of the girder runs from the top chord at the point of support, down to the bottom chord.

OSHA Safety standard required that where columns are not framed in at least two directions, joists at column lines, shall be field __?__

Bolted

Weld type for 700 lb nominal strength for K-Series Joists

Fillet

Page 35 Become familiar with the number of rows of diagonal bridging required before hoisting cable can be released. The load table color shading is what three colors?

Red, Blue or Gray

See figure 5.7. To control top heavy conditions, an additional row of __?__ type __?__ is required for bottom bearing joists.

X / bridging

Tag ends of joist girder must be placed as indicated on the joist __?__ plans.

placement

Joist Girders must be erected __?__

singularly

Joists Girders are primary structural members that have been designed as simply supported __?__

trusses

Note 4(B); Where the span of the steel joist is within the blue shaded area of the load table found on page 35 the hoisting cables shall not be released until the __?__ rows of bolted diagonal bridging nearest the __?__ of the steel joists are installed and anchored.

two rows of bolted diagonal bridging / third points

OSHA Safety standards strictly prohibits placing construction loads on __?__ joists

un-bridged

Page 2-3 Joists are designed as either __?__ or with __?__ .

underslung / square-ends

Joists and Girders are typically shipped in the __?__ __?__ position

upside down

Joists Table

Become familiar with Joist Table

The Girder web system configurations are typically modified __?__ type

Warren

What is the most common bridging used?

angle

Construction loads are defined in the OSHA safety standards as "__?__", __?__ and __?__.

any load other than employee(s), the joists and the bridging bundles

Immediately after each joist is set in place, both sides must be __?__. This must take place before installing the joist __?__.

attached / bridging

Joists and Girders are typically field __?__

bolted

Installing __??__ chord bridging will help resist __?__ forces

bottom / uplift

Since joist girders are not __?__, some bracing is normally required for the bottom cord.

bridged

Page 2-3 Underslung joists are supported at their ends through __?__

end bearing seats

Page 2-3 Square -end joists are supported at the __?__

ends of the bottom cords

For bolted diagonal bridging, what does red shading in the load table indicate?

indicates a single row nearest mid span

For bolted diagonal bridging, what does gray shading in the load table indicate?

indicates all rows for spans 100 feet through 144 feet.

For bolted diagonal bridging, what does blue shading in the load table indicate?

indicates two rows nearest the third points for spans of 100 feet or more

Joist products are typically shipped via an __?__

open top trailer