TEKLA & STEEL DETAILING QUESTIONS INTERVIEW-7

 1.FULL FORM OF NISD AND HVAC?

NISD:NATIONAL INSITITUTE OF STEEL DETAILING.

HVAC:HEAT VENTILATION AND AIR CONDITIONING

2.WHAT IS THE SHORTCUT  TO OPEN DRAWING LIST IN TEKLA?

MODELER EDITOR:CTRL+L

DRAWING EDITOR: CTRL+O

3.MENTION SOME CONDITIONS WHERE ALL AROUND FILET WELD APPLICABLEDE?

1.BASE PLATE & COLUMN

2. BEAM &END PLATE 

3. CAP PLATE & COLUMN

4.IF DESIGN DRAWING DOES NOT FURNISH WELD SIZE THEN  HOW TO DETERMINE WELD SIZE BETWEEN TWO MEMBERS ?

WELD SIZE  TO BE CONSIDER BASED ON  THE LOWEST THICKNESS BETWEEN TWO MEMBERS 

5.DERIVE BU4-GF?

B-BUTT WELD

U-UNLIMITED BASE METAL THICKNESS

4-SINGLE BEVEL

GF-WELDING PROCESS

6.HOW TO FIX RUNGS IN LADDER ?

FIRST WE NEED TO FIX TOP OF RUNG EQUAL TO  TOP OF FINISIED LEVEL OR TOP OF GRATING  THEN WE NEED TO SPACE THE RUNGS.

GENERALLY RUNG TO RUNG SPACING SHOULD BE 1-0

7.WHAT IS THE OVERHEAD CLEARENCE BETWEEN STAIR AND FLOOR AS PER OSHA?

6'-8" TO BE MAINTAINED

8.WHAT IS THE RULE BETWEEN STRINGER WIDTH AND LANDING CLEARENCE ?

LANDING  CLEARENCE SHOULD BE MORE THAN THE STRINGER WIDTH.THIS A GENERAL PRACTICE TO DETAIL STAIR LANDING

9.WHAT IS THE MAX TREAD AND RISER DIMENSION  IN  STAIR?

RISER SHOULD BE  MAX 7"

TREAD SHOULD BE  MAX 11"

10.WHAT IS THE MAXIMUM SPACING TO BE MAINTAINED  BETWEEN POST TO POST AND PICKET TO PICKET?

POST TO POST-4'-0

PICKET TO PICKET-4"

11.HANDRAIL HEIGHT TO BE FIXED FROM?

NOSING LINE OR TOP OF FINISHED FLOOR.

12.DEFINE NOSING LINE?

THE LINE WHICH TOUCHES ALL NOSING POINTS IS KNOWN AS NOSING LINE

NOSING POINT: INTERSECTION OF PAN TREAD AND RISER 

13.HOW TO CONNECT WALL RAIL TO WALL?

CONNECTION BETWEEN WALL AND WALL RAIL  BY USING WALL BRACKET .

GENERALLY WALL BRACKET IS A BOUGHT ITEM.

14.WHAT IS THE ANGLE  TO DETAIL STAIR AS PER OSHA?

STAIR ANGLE SHOULD BE  30 DEGREE TO 50 DEGREE TO DETAIL STAIR.

TEKLA INTERVIEW QUESTION PAPER-6

1.WHAT IS THE FULL FORM OF AWS AND LRFD?

AWS:AMERICAN WELDING SOCIETY.

LRFD: LOAD RESISTANCE FACTORY DESIGN.

2.WHAT ARE THE INPUT DRAWINGS OF STEEL DETAILING?

1.STRUCTURAL DRAWING

2.ARCHITECTURAL DRAWING

3.CIVIL DRAWINGS.

4.DECK DRAWINGS

5.JOIST DRAWINGS

6.ELEVATOR DRAWINGS

3.WHAT IS THE FLANGE GAGE FOR W8X31 COLUMN OR BEAM?

4"

4.DEFINE BACK CHARGE?

COSTS DIRECTED TO A FABRICTOR OR STEEL DETAILER FOR ERRORS IN FABRICATION OR DETAILNG.

5.WHAT IS MEANT BY SQ2E , SQ1E AND BEV?

SQ2E:SQUARE CUT BOTH ENDS

SQ1E:SQUARE CUT ONE END

BEV:BEVEL

THIS TERMS USUALLY WILL MENTION IN DRAWING BOM

6.WHAT ARE THE TYPES OF DECK?

1.COMPOSITE FLOOR DECK

2.ROOF DECK.

3.CELLULAR DECK.

4.FORM DECK.

7.WHAT IS THE USE TOE PLATE AND RUNGS?

TOE PLATE:

IS A SAFETY FEATURE IN HANDRAILS TO AVOID THE ACCIDENTS DUE TO SLIPPING OF FOOT.

RUNG:

RUNGS ARE STEPS IN LADDER TO ACCESS THE PLATFORM OR FLOOR

8.WHAT IS GRADE FOR REBAR ?

NORMAL GRADE IS ASTM A706 GRADE-60

IF IT IS WELDED THEN ASTM A615

9.IN W16X40 WHAT IS 16 AND WHAT IS 40?

16-IS NOMINAL DEPTH

40 IS LBS/FEET

10.WHAT IS THE CLEARENCE BETWEEN WALL TO HANDRAIL OR WALL RAIL?

CLEARENCE IS 1 1/2"

11.WHAT IS THE USE OF BACK UP BAR?

IN ORDER TO AVOID THE OVERFLOW OF WELD.

12.WHAT ARE THE TEMPORARY BOLTS AND WHAT ARE THE HIGH STRENGTH BOLTS?

A307 BOLTS ARE TEMPORARY  WHEREAS A325 AND A490 ARE HIGH STRENGTH BOLTS.

13.IF ONE BEAM IS STRAIGHT AND OTHER BEAM IS SKEWED THEN WHAT KIND OF 

CONNECTION WE NEED TO PROVIDE?

BENT PLATE CONNECTION WE NEED TO USE

14.WHAT IS ASTMA325T BOLT?

BOLT IS FULLY THREADED UP TO FULL LENGTH OF SHANK.

15.WHAT IS THE MAXIMUM AVAILABLITY LENGTH FOR A BOLT?

 MAXIMUM LENGTH AVAILABLITY FOR A BOLT IS 8" ,IF IT IS MORE THAN 8" THEN

WE NEED USE ROD.

OSHA REQUIREMENTS AND RULES

 

 OSHA REQUIREMENTS

BASE PLATE :

• BASEPLATE NEED TO HAVE MINIMUM 4 ANCHOR BOLTSA

• USAGE OF LEVELING NUT OR LEVELING PLATE SHOULD BE DISCUSSED WITH ERECTOR

• DETAILER SHOULD REFER TO DESIGN DRAWINGS TO PROVIDE OVERSIZED HOLES IN BASE PLATE ,IF INFORMATION MISSING THEN WE NEED TO REFER TABLE C-J9.1 AND 14.2 OF AISC BOOK.

COLUMN

• COLUMN SPLICE SHOULD BE AT 4'-0 FROM FINISHED FLOOR 

 

•  ALL PERIMETER COLUMNS SHOULD HAVE SAFETY HOLES FOR WIRE GUARD RAIL ONE AT 1'-9 FROM FINISHED FLOOR AND SECOND AT 3'-6 FROM FINISHED FLOOR

 

•  ALL COLUMNS SHOULD BE PROVIDED WITH LIFTING HOLE SPECIALLY TIER COLUMNS,NORMALLY LIFTING HOLE DIA IS 2'-0.

 

•     ALL COLUMNS SHOULD HAVE CORRECT ORIENTATION MARK TO ERECT THE COLUMN.

• EXTENDED SHEAR TAB CONNECTION TO BE FOLLOWED WHERE BOLT ACCESS IS BLOCKED BY FLANGES.       

BEAM:

• MINIMUM OF TWO BOLTS REQUIRED AT EACH END OF BEAM FOR ERECTIO

• D/2 RULE TO BE SATISFIED AT EACH CONNECTION TO SATISFY REQUIRED LOADS

• ALL DOUBLE ANGLE CONNECTIONS AT COLUMN WEB OR BEAM WEBMUST HAVE STAGGERED CLIP ANGLES OR A BEAM SEAT  OR A TOP FLANGE CLIP ANGLE .WHEN NOT POSSIBLE TO PROVIDE SAFETY CONNECTIONS THE DETAILER SHOULD ADD A NOTE OF WARNING  TO THE ERECTOR ON EPLANS.

JOISTS:

• IF JOIST SPAN  MORE THAN 40'-0  THEN WE SHOULD BE PROVIDED WITH 2 ERECTION BOLTS

• VERTICAL STABILZER PLATE NEED TO BE PROVIDED, THIS PLATE SHOULD BE OF MINIMUM 6"X6"  AND 3" BELOW THE BOTTOM OF JOIST, WITH 13/16DIA HOLE FOR GUYING OR PLUMBING CABLES.

DECK :

• DECK SUPPORT MAY BE REQUIRED AT DECK CUTOUTS NEAR BEAM TO BEAM OR BEAM TO COLUMN CONNECTIONS,REFER DESIGN DRAWING OR THE CLENT FOR PREFERRED METHOD

SNAGGING HAZARDS:

• AVOID SHARP CORNERS.

 

CONNECTIONS:

• USE BEARING CONNECTIONS AND AVOID HANGING CONNECTIONS.

TRIPPING HAZARDS:

• ANY CONNECTIONS OR OBSTRUCTIONS SHOULD BE AVOIDED ON TOP OF BEAM OR JOIST.

FALL PROTECTION:

• MULTISTORAGE STRUCTURE REQUIRES GUARD RAIL CABLES AT FLOOR PERIMETER ,INTERIOR OPENINGS  AND ROOF OPENINGS.THIS PROTECTION SUPPORT SHOULD BE AGREED UPON PRIOR TO COMENCEMENT OF DETAILING.

ERECTION AID:

• FOR FIELD WELDS OF TUBES OR BRACINGS ,WE NEED TO PROVIDE ERECTION BOLT OR ERECTION ANGLE FOR SUPPORT

WHAT IS TEKLA & STEEL DETAILING?

TEKLA means building inormation modelling software used in building and construction industries for steel,concrete and precast detailng.

Types of versions in tekla.

17.0,

17.1,

18.0,

18.1,

19.0,

19.1,

20.0,

20.1,

21.0,

21.1.

TEKLA 2017,TEKLA 2018,TEKLA 2019,TEKLA 2020.

WHAT ARE THE ENVIORNMENTS IN TEKLA?

US IMPERIAL,US METRIC,UK,INDIAN.

FOR US WE WILL USE US IMPERIAL.

WHAT ARE THR ROLES IN TEKLA?

 STEEL DETAILING

 CASTING,

ENGINEERING

WHO WILL DO PROJECT IN TEKLA ?

DETAILER,

MODELER

CHECKER

STEEL DETAILNG?

THE PROCESS OF CONVERTING DESIGN DRAWING IN TO  SHOP & FIELD DRAWINGS IS KNOWN AS STEEL DETAILING.

 HOW PROCESS WILL START?

What are the responsblies of detailer?

1.HE NEED TO EDIT SHOP DRAWINGS & ERECTION DRAWINGS WITH RESPECTIVE TO DESIGN DRAWINGS IN AN UNDERSTANDING MANNER.

what are the responsiblies of modeler?

HE NEED TO CONSTRUCT THE BUILDING IN 3D VIEW WITH RESPECTIVE 

TO DESIGN DRAWINGS IN AN UNDERSTANDING MANNER.

What are the responsibilities of checker?

He need to check and correct the errors of detailer and modeler with respective to design drawings.

He need to coordinate with detailer and modeler to achieve desired output.

*************************************************************************PLEASE MENTION YOURS COMMENTS AND SUPPORT ME FOR FURTHER

UPDATES.

MOMENT SPLICE CONNECTIONS (STEEL DETAILING & TEKLA)

 1.DRAW FLANGE PLATED SPLICE MOMENT CONNECTIONS?

                                  FLANGE PLATED SPLICE MOMENT CONNECTIONS.

 

DIRECTLY WELDED MOMENT SPLICE CONNECTION

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?

JUST FOR REFERENCE

COLUMN WITH BASE PLATE

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

 

 

CONNECTIONS SKETCHES-STEEL DETAILING -USEFUL POST.

 1.PLEASE DRAW DOUBLE ANGLE CONNECTIONS ?

CLIP ANGLE CONNECTIONS

2.PLEASE DRAW SHEAR PLATE CONNECTION?

END PLATE CONNECTION

SHEAR PLATE CONNECTION.

                           EXTENDED SHEAR TAB CONNECTION                                                                                                 

                                                                                                                                                   3.PLEASE DRAW T JOINT CONNECTIONS ?

T-JOINT CONNECTION

4.DRAW SINGLE ANGLE CONNECTIONS?

5.DRAW COLUMN FLANGE MOMENT BOLTED CONNECTION?

6.DRAW COLUMN WEB MOMENT  BOLTED CONNECTION?

7.DRAW COLUMN FLANGE MOMENT WELDED CONNECTION?

8.DRAW COLUMN WEB MOMENT WELDED CONNECTION?