TEKLA means building inormation modelling software used in building and construction industries for steel,concrete and precast detailng.
Saturday, May 15, 2021
WHAT IS TEKLA & STEEL DETAILING?
Thursday, May 13, 2021
MOMENT SPLICE CONNECTIONS (STEEL DETAILING & TEKLA)
1.DRAW FLANGE PLATED SPLICE MOMENT CONNECTIONS?
FLANGE PLATED SPLICE MOMENT CONNECTIONS.
Wednesday, May 12, 2021
TEKLA & STEEL DETAILING INTERVIEW SIX QUESTIONS
1.WHICH TYPE OF CONNECTION TO BE PREFERABLE IN FIELD TO REDUCE COST?
BOLTED CONNECTION IS PREFERABLE WHEN COMPARED TO FIELD WELDING.
*.FIELD WELD IS SO COSTLY THAN FIELD BOLTING.
2.PLEASE DRAW COLUMN WITH BASE PLATE CONNECTION?
1.
Bottom of base
plate elevation.
2.
Orientation
mark of the column.
3.
Column to base
plate weld.
4.
Locations of
the holes in base plate with respect to the column center line.
5.
Hole diameter
and number of holes in base plate.
6.
Base plate
thickness.
3.WHAT IS THE HOLE SIZE IN BASEPLATE FOR 3/4 DIA TO 2 1/2 DIA ANCHOR RODS?
Size of Anchor – Rod Holes In
Base Plates
|
|||
Anchor Rod Dia |
Max. Hole Dia As per
LRFD |
Hole Dia
As per
ASD |
|
3/4 |
1 5/16 |
1 1/16 |
|
7/8 |
1 9/16 |
1 3/16 |
|
1 |
1 13/16 |
1 1/2 |
|
1 1/4 |
2 1/16 |
1 3/4 |
|
1 1/2 |
2 5/16 |
2 |
|
1 3/4 |
2 3/4 |
2 1/4 |
|
2 |
3 1/4 |
3 |
|
2 1/2 |
3 3/4 |
3 1/2 |
|
Larger holes are permitted if Plate Washers Used. |
4.WHAT IS THE USE OF LEVELLING PLATE?
Normally thickness of leveling plate will be ¼ -in. The leveling plate may be larger than the base plate to accommodate tolerance of Anchor Rod placement.
5.WHAT IS THE USE OF PLATE WASHER?
The oversize holes should be covered with a heavy plate washer. The minimum thickness should be one-third the diameter of the anchor rod
6.WHAT IS THE GRABRAIL EXTENSION FROM LAST TREAD ?
1'-0
Tuesday, May 11, 2021
CONNECTIONS SKETCHES-STEEL DETAILING -USEFUL POST.
1.PLEASE DRAW DOUBLE ANGLE CONNECTIONS ?
2.PLEASE DRAW SHEAR PLATE CONNECTION?
EXTENDED SHEAR TAB CONNECTION
3.PLEASE DRAW T JOINT CONNECTIONS ?
Sunday, May 9, 2021
TEKLA & STEEL DETAILING INTERVIEW QUESTION PAPER-5 .
1.WHAT IS THE GRADE FOR WASHER ,NUT ,STUD AND DTI WASHER?
WASHER-F436
NUT-A563
DTI WASHER-F959
STUD-A108
2.WHEN TAPPERED WASHERS WIIL USE?
TAPPERED WASHERS ARE USED WHEN THE SURFACE BEING BOLTED H AS A
SLOPED SURFACE,SUCH AS FLANGE OF C SHAPE AND S-SHAPE.
3.DEFINE BOLT LENGTH?
BOLT LENGTH IS THE DISTANCE FROM BEHIND THE BOLT HEAD TO END OF THE BOLT.
SNUG TIGHT IS THE BOLT TIGHTENING PROCESS AND TIGHTNESS IS ATTAINED WITH FEW HITS OF IMPACT WRENCH OR FULL EFFORT OF AN IRON WORKER BY USING ORDINARY SPUD WRENCH TO BRING THE CONNECTED STEEL IN TO FIRM CONTACT.
1 1/16" X2 1/2"
6.WHAT ARE THE MAIN POINTS TO BE CONSIDERED WHILE CHECKING DRAWINGS?
100% DIMENSIONS ACCURACY.
CUSTOMER SPECIFIC STANDARDS.
DESIGN DRAWING POINTS.
FABRICABILITY
ERECTABILITY
7.WHO IS FABRICATOR AND ERECTOR?
FABRICATOR:IS RESPONSIBLE FOR FABRICATING THE STRUCTURES IN THE SHOPS BASED ON DETAILS GIVEN BY THE DETAILER.
ERECTOR: IS RESPONSIBLE FOR ERECTING THE STRUCTURE IN FIELD BASED ON THE DETAILS GIVEN BY DETAILER.
8.INCH TO MM CONVERSIONS?
1 INCH = 25.4MM = 0.0254M
1 M = 40 INCHS
1 FOOT = 300 MM = 12 INCHS
1KIP = 454 KILOGRAMS
1000 POUNDS = 1 KIP
1 POUND = 0.454 KILOGRAM
9.WHAT IS STICH WELD?
A SERIES OF WELDS OF A SPECIFIED LENGTH THAT ARE SPACED A SPECIFIED DISTANCE FROM EACH OTHER
LENGTH OF SPAN FROM FACE TO FACE OF SUPPORTS IS KNOWN AS CLEAR SPAN.
11.WHAT IS THE LIFTING HOLE DIA FOR COLUMN OR ANY STEEL?
2"Ø MIN
Friday, April 23, 2021
TEKLA INTERVIEW / STEEL DETAILNG QUESTIONS PAPER-4
1.WHAT ARE THE WELDING POSITIONS?
1.FLAT.
2.HORIZONTAL.
3.VERTICAL.
4.OVERHEAD.
2.WHAT IS A TACK WELD?
A TEMPORARY WELD USED TO HOLD PARTS IN PLACE WHILE MORE EXTENSIVE, FINALWELDS ARE MADE.
3.WHAT ARE THE JOINTS OF WELD?
1.BUTT
2.LAP
3.CORNER
4.EDGE
5.T-JOINT
4.WHAT IS SURFACE PREPARATION AND SSPC?
SSPC-STRUCTURAL STEEL PAINTING COUNCIL.
SP1 - SOLVENT CLEANING.
SP2 - HAND TOOL CLEANING
SP3 - POWER TOOL CLEANING.
SP5- WHITE METAL BLAST
SP6 - COMMERICAL BLAST
SP7- BRUSH OFF BLAST.
SP10- NEAR WHITE BLAST
SP12- HIGH AND ULTRA HIGH PRESSURE WATER JETTING.
5.Which are characteristics of Special Moment Frames?
a. the expectation of withstanding significant inelastic deformations under the
design earthquake
b. frames where the beam-to-column connections must be capable of sustaining
an inter-story drift angle of at least 0.04 radians
c. frames where qualification testing or pre qualification of beam to-column
connections is required
6.Paint thickness is commonly measured in which units?
MILS.
7.What is the purpose of a weld access hole is to?
a) allow the welder access to start and stop the beyond the plane of the beam
web.
b) minimize restraint to allow for shrinkage in the welded joint.
c) eliminate intersection of welds in orthogonal directions.
8.What is the difference between shop fabrication drawings and erection drawings?
Shop drawings are detail drawings of columns, beams and etc. Where as erection drawings are which shows all the locations of all structural steel framing members.
9.If joist length more than 40 feet what type connection we have to use.?
IF JOIST IS MORE THAN 40'-0 WE NEED TO FOLLOW BOLTED CONNECTION.
IF JOIST IS LESS THAN 40'-0 WE NEED TO FOLLOW WELDED CONNECTION.
10.How do view the beams in erection plan in case of beam detailing?
from left to right and bottom to top.
11. What will be provided to strengthen the beam when the beam frames over the column?
we need to provide stiffeners in beam for load transfer.
12.what is the Formula for cut length?
C/C distance– set back dimensions – ½ on either side.
13. if Knife edge connection being provided by welding the 2 clips to the column and I am not able to erect from the sides. what we need to do?
cut the bottom flange and insert the beam from top.
14.what are the anchor rod hole dia for 3/4Ø,1"Ø,7/8Ø?
3/4Ø-1"1/16Ø
7/8Ø-1"3/16Ø
1"Ø-1"1/2Ø
15.IF WE HAVE LONG SLOTS IN BEAM OR ANY STEEL MEMBERS?WHAT WE NEED TO
TO COVER SLOTS?
WE NEED TO PROVIDE PLATE WASHERS TO COVER THE LONG SLOTS.
16.WHAT IS A BUILT UP MEMBER?
A MEMBER MADE UP OF STRUCTURAL STEEL ELEMENTS THAT ARE WELDED OR BOLTED TOGETHER IS KNOWN BUILT UP MEMBER.
*BY USING PLATES WE CAN MADE A W MEMBER THAT IS KNOWN AS BUILT UP MEMBER.
17.WHAT IS A EDGE DISTANCE?
THE PERPENDICULAR DISTANCE FROM CENTRE OF HOLE TO EDGE OF THE MEMBER
IS KNOWN AS EDGE DISTANCE.
18.WHAT ARE THE OSHA REQUIREMENTS FOR BRACING?
1.ERECTION BOLTS ARE REQUIRED AT VERTICAL TUBE OR ANGLE BRACINGS.
2.OVERSIZED HOLES IN GUSSET PLATE FOR ERECTION FEASBILTY ,WE NEED TO
TAKE CONFIRMATION FROM CLIENT.
19.WHAT IS THE MAXIMUM ROW OF BOLTS FOR W6 TO W36?
W6-1,
W8,10-2
W12,W14-3
W16-4
W18-5
W21-6
W24-7
W27-8
W30-9
W33,36-10
20.WHAT IS THE FIRST HOLE DISTANCE FOR W8 AND W27?
W8-2 1/2"
W27-3 1/2"
21.WHAT IS THE GAGE FOR L2 AND L4?
L2-1 1/8"
L4-2 1/2"
BELOW CONVERSIONS ARE IMP.
1/16-0.0625 5/16-0.3125
1/8-0.125 3/8-0.375
3/16-0.1875 7/16-0.4375
1/4-0.25 1/2-0.5
Friday, March 26, 2021
TEKLA CHECKER INTERVIEW QUESTIONS-3
1. In addition to the standard K-series open-web steel joists, steel joists are also available in the LH-series and DLH-series. What to the letters LH and DLH signify?
LH- Long Span
DLH-Deep Long Span
2.what is the seating depth for K,LH and joist girder?
K-2 1/2"
LH-5"
JOIST GIRDER-7 1/2"
3.What is the grade for erection bolts?
A307-MACHINE BOLTS.
4.What is a lintel?
Lintel is a primary structural number placed above doors, windows or other openings to support masonry above.
Generally we will maintain 8" bearing.
5.What is a sag rod?
A tension member used to limit the movement of a girt or purling in the direction of week axis before
installation of sheeting or roofing.
sag rods is generally known as thru rods.
6.What is a sill, jamb ,header?
SILL: The bottom horizontal member of a door or window openings.
JAMB: Vertical side of a wall opening.
HEADER: Horizontal member at the top of wall opening.
7.what are the types of weld joints?
1.Bearing joint:
In the bearing joint load will transfer through bolt.
2.slip critical joint.
In slip critical condition ,load will transfer through friction.
9.What are the short slotted hole size for 3/4"Ø and 7/8"Ø bolt?
1.For 3/4"Ø_13x16"X 1".
2.For 7/8"Ø_15/16"X 1 1/8"
10.What are the OSHA requirements for column?
1.Minimum 4 anchor rods required for column base plate.
2.If column length is above 40'-0 then we need to provide splice connection.
splice connection application should be 4'-0 from finished floor.
3.Safety cable holes to be provided in perimeter columns for safety purpose.
generally safety cables are 1'-9" from finished floor.
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