ICC Welding Practice Questions with Correct Answers.docx

ICC Welding Practice Questions with Correct A Given, a column is 29 feet long. What is the maximum variation in straightness? - Answer-0.3625; D1.1 5.23.1 Reference is made to Figure 6.4 in AWS D1.1, 2006. What is the maximum size discontinuity allowed in 3/4" thick complete penetration groove weld ? - Answer-1-1/16"; D1.1 F6.4(a) If welding ASTM A913 steel of thickness exceeding 1 1/2 inches (38 mm) without use of preheat, what is the maximum diffusible hydrogen permitted from the filler metal being used? - Answer-8ml/100g (H8); D1.1 T3.2 For welding structural steel under AWS D1.1, which welding process does not require qualification testing? - Answer-SMAW, SAW, GMAC (not -S), FCAW; D1.1 3.2.1 Given: two pieces of 1/4 inch flat bar is to be connected with a lap joint. What is the minimum overlap of material in this stress-carrying lap joint? - Answer-1-1/4"; D1.1 2.8.1.2 The specified depth of a welded girder is 36 inches. What is the maximum depth of this member? - Answer-36-1/8"; D1.1 5.23.9 For welding reinforcing steel, a welder qualified using #8 (#25) bar, is qualified to weld reinforcing bars - Answer-#8 and up; D1.4 6.3.2.2 What is the maximum SMAW electrode diameter when welding in the vertical or overhead position, if the WPS is to be prequalified? - Answer-3/16"; D1.1 T3.7 When welding sheet steel, the permitted length of undercut of an arc spot weld of 1 inch diameter (25 mm) is - Answer-pi/8 or 0.39; D1.3 6.1.1.4 Reference is made to a CJP Groove Weld column splice (in compression) on material with a minimum tensile strength of 70 ksi. What is the minimum filler metal tensile strength required for this application? - Answer-10 ksi less than matching filler metal=60 ksi?; D1.1 T2.3 Reference is made to a CJP Groove Weld column splice (in compression) on material with a minimum tensile strength of 70 ksi. What is the minimum filler metal tensile strength required for this application? - Answer-10 ksi less than matching filler metal=60 ksi?; D1.1 T2.3 For a welded built-up beam with a specified depth of 10 inches (250 mm), what is the acceptable range of actual depths following completion of welding? - Answer-10 +/- 1/8; D1.1 5.23.9 Submerged arc welding flux received in damaged packaging must be discarded or dried under what conditions? - Answer-Minimum temperature of 500F for 1 hr before use; 5.3.3.2 Nondestructive testing is required on a particular long complete penetration groove weld in a welded subassembly. The design professional has determined that spot testing of this weldment will be sufficient. What is the minimum length of each spot test? - Answer-At least 1 in a 4"; D1.1 6.15.3 What is the effective area of a 1 inches thick complete penetration groove weld that is 6 inches long? - Answer-6 ; D1.1 2.3.1.5 For a flare-V groove weld between two reinforcing bars specified to be 4 inches (100 mm) in length, what is the acceptable length? - Answer-4" - what is specified; D1.4 2.3.2.2 A 5/16 inch fillet weld is used to connect two 1/2 inch steel plates in a "T" configuration. The fillet weld is 6 inches in length. What is the effective area of this fillet weld? - Answer-1-7/8 ; D1.4 2.3 The size of a 5/16 inch. fillet weld may be less than the specified nominal size by percent of the weld length. - Answer-1/8"; D1.1 T6.1(6) What is the name of the welding process that produces coalescence of metals with molten slag that melts the filler metal and the surfaces of the workpieces? The weld pool is shielded by this slag, which moves along the full cross section of the joint as welding progresses. The process is initiated by an arc that heats the slag. The arc is then extinguished by the conductive slag, which is kept molten by its resistance to electric current passing between the electrode and the work pieces. - Answer-ESW; D1.1 Annex K Reference is made to AWS D1.1 2006. A welding procedure specification for the GMAW welding process requires a voltage range of 35 to 45 volts. The fabricator wants to increase the voltage output. What is the maximum voltage that can be used before procedure requalification is required? - Answer-48.15 V; D1.1 T4.5 (10) When joining a 1/2 inch thick plate to a 1 inch thick plate, using E7018 SMAW low-hydrogen electrodes, what is the minimum size fillet weld permitted if the WPS is to be considered prequalified? - Answer-3/16"; D1.1 3.9 to T5.8 A welded sub-assembly is to be fabricated from 1/2" low alloy steel plate with a minimum tensile strength of 80 kips. The fabrication has depleted his supply of the specified material and wants to substitute stock plate of an unknown tensile strength. A Reduced Section Tension Specimen (AWS D1.1 Figure 4.14) was prepared and tested. The specimen failed at a load of 29 kips. What is the tensile strength of this material? - Answer-77 kips; D1.1 F4.14 to 4.8.3.4 A welder is qualified to weld complete penetration groove welds on plate in the 4G position. This test qualifies the welder to weld what size of pipe? - Answer-A5.2 E7XT-X, E7XT-XC, E7XT-XM; D1.1 T3.1 Filler metals of alloy groups -B3 and higher are not prequalified for what reason? - Answer-Considerations in differences of tensile strength, hardness and ductility between PWHT versus as-welded condition; D1.4 T5.1(Note) What are the requirements for verifying welding materials? - Answer-Only materials conforming to the requirements of D1.1; D1.1 6.2 Reference is made to Fillet Welded Lap Joint in round tubular section. What is the minimum lap distance irregardless of material thickness? - Answer-1"; D1.1 2.8.1.2