Exam 3 Flashcards
Which organization governs the specific requirements for the design of Tubular or Non-tubular Welded Connections, structural members?
AWS
Which job documents are the best at describing the configuration and size of a weldment?
Drawings
Why are tolerances required on drawings?
- to guide the inspector on permissible size variations
2. to show the total amount of variation permitted from the design size.
For fillet welds between parts with surfaces that meet at an angle between 80 degrees and 100 degrees which determines the fillet weld leg size?
contract documents
How long should the effective length of a fillet weld be?
Curved - measured along L of the effective throat
Straight - overall length + end returns
What is the effective area of a fillet weld?
The overall length of the full size fillet, including end returns.
In a 1/2” fillet weld, what should the minimum effective length be?`
2 inches
On an intermittent fillet weld in a T-joint, which may not be less than four times the amount of the weld, what is the minimum length of any segment?
1-1/2 inches
What is the minimum length of any intermittent fillet weld?
1-1/2 inches
What are the two points used to measure the shortest distance for the effective throat thickness of a fillet weld?
The root to the face
Without special detail along the edge of connected parts of a 3/8” plate, the maximum effective size of a fillet weld is:
5/16”
What is the maximum fillet weld size on 1/4” thick steel, according to AWS D1.1?
3/16”
What is the maximum size fillet weld specification allowed on the edges of two 3/8” thick plates, joined in a lap joint configuration?
5/16”
What is the maximum size fillet weld allowed for use along the edge of a 5/8” plate?
9/16”`
What is the maximum size of a fillet weld allowed along the edge of a 3/16” plate
3/16”
The effective area of a groove weld is:
the effective length times the effective weld size.
The effective length of a straight fillet weld is:
the overall length of the full-size fillet including end returns.
For a statically loaded lap joint on 1/4 inch thick steel, what is the maximum fillet weld size according to AWS D1.1
3/16”
In stress carrying members, the welded overlap joints must be lapped five times the thickness of the thinner part, but never less than:
1”
What is the maximum size fillet weld that can be detailed along the edges of two 3/8” plates joined in a lap joint configuration?
5/16”
What is the definition for “T” joints where the angle between joined parts is more than 100 degrees or less than 80 degrees?
Skewed ‘T’
In a skewed T-joint, to be considered effective in transmitting applied force, the minimum angle of the plates to be welded with a fillet weld must be what degrees or less?
30 degrees
True or False: A skewed T-joint’s effective length is the overall length at the full-size weld?
True
The effective area of a plug or slot weld is:
the nominal area of the hole
For material 2” thick, what should the thickness of the plug weld be?
1”
What is the minimum thickness in 1-1/2 inch material of a plug or slot weld?
3/4”
What is the minimum thickness in 3/8” plate of a plug or slot weld?
3/8”
What is the minimum thickness in 1” plate of a plug or slot weld?
5/8”
A fillet welded lap joint must have a lap of five times the thickness of the thinner plate, but at least:
1 inch
What should the hold back be on a weld ending near the edge of a connection subject to tension?
At least the weld size
True or False: it is prohibited to have fillet welds on opposite sides of a common weld?
True
What specific type of weld is a fillet weld in a hole or slot?
Fillet welds
Center to center spacing of plug welds must be at least:
4 x the diameter of the hole
True or False: Fillers under 1/4” thick can be used to carry stress.
False
What is the minimum distance of the end returns if a fillet weld is returned continuously around the corner of a beam seat?
Twice the size of the weld.
True or False: Groove welds that are made from only one side without backing, or made with backing other than steel, that are not qualified in compliance with Clause 6 are prohibited.
True
Which of the following joints and welds are prohibited?
a. fillet welds less than or equal to 1/8”
b. fillet welds less than 3/16”
c. fillet welds less than or equal to 3/16”
d. none of the above
All fillet welds less than 3/16”
