03/09/2005 Training for RAMSTEEL #2 Page K 1

RAMSTEEL TRAINING SESSION #2

Complete RAMSTEEL Tutorial #1 1 hr, 30 min

1. The first tutorial will give you an excellent basis for completing this exercise. There is also a more advanced tutorial in the V9 manuals that your Engineering Manager has.

2. Review PowerPoint presentation "Best Known Practices Mezzanine Design" presented to Engineering Council on June 12, 2002.

Hands-On Training - IT7108 test order 1 hr, 30 min

1. Select File - New. Locate on C:\Scratch and use Tutorial02 for file name. Typically files should be saved under O:\Orders drive. Input Widget America for job name and check English units.

2. From RAM Manager, select Criteria – Master Steel Tables and set tables to bldgdiv. Do

similarly for Design Steel Tables for both Beam and Column (See Figure 1).

.

Figure 1

3. From RAM Manager, select Criteria – Live Load Reduction and set code to IBC, General.

4. From RAM Manager, select Criteria – Self Weight and select top 3 items (Figure 1a). In this example the weight of the beams is included in the dead load.

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Figure 1a

5. Select Model at left of screen to start RAM Modeler.

6. Use Options – Set Defaults to set default to 55 ksi, non-composite. Alternate: Use Change Properties after laying out entire structure.

7. Select Layout – Type – Select and add Mezz for Floor Type ID.

8. Try to get familiar with using the toolbar buttons in this exercise instead of the menu. It can save you time. Select the appropriate button depending on whether you are laying out grids beams columns or slab.

9. Select Layout Grid

a. Add Orthogonal Grid System Label Mezz. Select Add.

b. Click Edit Grids and set up the X & Y grids per the 11”x17” data sketch. Grid H1 is located at 0,0.

i. Select X grid tab. Input 6 bays at 25’ for the X grids (below, left). After selecting Automatic Ascending, click Add.

ii. Add a blank grid at 1.17’ (=1’2”). Grids C & 1 are reference grids only for the structure lines (no beams or columns).

iii. Select Y grid tab. Use Manual to lay out Y grid lines H, F, D & C at 20’ endwall column spacing (below, right). After selecting Manual, click Add.

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X grid setup Y grid setup

iv. Add E.3 grid at 30’and a blank grid at 58.83’.

v. Make sure the blank grids (X and Y) have no Grid Labels and to uncheck box next to I – end of grid as shown below.

c. Before proceeding, be sure the grids are set up as shown in Figure 2.

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Figure 2

d. Select the grid system to be used for the mezzanine .

10. Lateral versus Gravity members a. Lateral –

i. Carry other loads such as wind, roof ii. Height greater than mezzanine

iii. MRF, LRF or endwall columns iv. Lateral or Moment frames

b. Gravity –

i. Support mezzanine loads only ii. Pinned ends

11. Select Layout Columns .

a. Layout columns on grid per data sketch . Note that all the sidewall, endwall and MF interior columns are lateral columns. Why? They have add’l loads such as wind or frame loads in addition to the mezzanine gravity loads.

12. Select File – Save. Partners – SWITCH DRIVERS.

13. Select Layout Beams .

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a. Layout beams on grid per data sketch . The easiest way to do this is to fence in the

entire layout and just delete the beams you don’t need. Use edge beams around the perimeter. We will use joists instead of beams at the interior columns except from 2F to 2(E.3).

b. Use Off Grid to add beams for stairway opening @ 5’,15’ and 8’.

c. Use Change Properties to change the beam between C2-C3 to lateral beam (strut beam w/ bracing).

Figure 3

14. Layout joists.

a. Start by setting material to Steel Joist from dropdown on left side of menu.

b. Click Generation to add joists at 2.5’ centers. Make sure joists line up at the interior columns. Tip – drag from right to left (i.e. grid 7 to grid 1) in order to avoid the 1.17’ offset in the first bay.

c. Delete extra joist adjacent to stairway header.

d. Switch material back to Steel.

e. Select File – Save.

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15. Select Layout Slab .

a. Layout 4” slab edges around whole perimeter.

b. Layout slab openings with 4” overhangs . Use In-Bay option.

c. Layout deck on whole floor.

i. Be sure to lay it out in the horizontal direction. The purple graphical representation is not necessarily the direction of the deck

ii. Note that non-composite deck is automatically an option and does not have to be

defined with PropTable .

16. Select Layout Loads .

a. Define the surface loads. Be sure the live load is defined as storage. Dead load must include beam self weight.

Figure 4

b. Use Help(F1) - Help Topics – Find – “Mass” to see why you don’t need to fill anything in for construction and mass dead load.

c. Layout surface loads over the whole floor.

17. Define Story data. To be accurate, the story height should be 9.79 ft (=10 ft less joist depth).

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18. Perform Data Check.

19. Use Options - Set Show Options to make sure that all beams and columns are 55ksi and all beams are non-composite. Make any changes required prior to proceeding further.

20. Select View - 3D View.

21. Select File – Save. Partners – SWITCH DRIVERS.

22. Exit Modeler.

23. Design Beams a. Select Mezz layout from dropdown.

b. Select Design – Steel Design Codes. Select ASD 9th Edition, Supplement #1.

c. Select View - Show Designs .

d. If some of the beam designs are not shown, select Design All from the menu.

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e. Make both stairway beams the same size (BU 12x13.2) with View / Update. Select BU 12x13.2 - Analyze – Update Database. Typically detailers & shop would also want all beams along lines H & C to be the same size.

f. Set reports to print to screen with Reports - Screen.

g. Print Material Takeoff to screen with Reports –Takeoff. Verify that the Beam Wt – 19,125 lbs, Joists – 30,191 lbs.

h. Note that on a real job, parts with a quantity of 1 should probably be changed to be the same as other parts to minimize detailing.

i. Print Floor Layout to screen with Reports - Map Floor. Select Beam Design, Show Studs, and Show Cambers, Landscape Orientation, Text Scale Factor 1.0. Dimensions are not printed on the floor map.

24. Design Columns .

a. Select View / Update from menu and select a gravity column marked with light green ‘+’ (not a red one).

b. Click on Sty…from Column Selection Results (Figure 5). Click View Results to see design results.

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Figure 5

c. Print Material Takeoff to screen with Reports –Takeoff. Verify that the total column weight – 1086 lbs and the size is BU8x15.8. Realize that the 6” flange width is probably too narrow for clip connections.

25. Design of Base Plates a. From column module select Criteria – Base Plates. Verify all settings.

b. Select Reports – Base Plates – Summary. View summary of all base plate designs.

26. Modifications

a. Change to mill steel RAM Manager - Criteria - …Tables. Set to RAMAISC tables for

both Master and Design tables for both columns and beams .

b. Go to RAM Modeler and use Beam - Change Properties to change all beams to 50ksi steel. .

c. Set depth restriction for beams to 19” max using Layout - Beams – Size restriction .

d. Change gravity columns to square tubes, 46 ksi (Figure 6)

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Figure 6.

e. Exit Modeler.

f. Redesign beams. Verify that all beams are mill shapes less than 19” deep.

i. Select OK to the message on BU12x13.2 stairway beam not being found. That is the beam you set the size for.

ii. Compare the weight to the previous takeoff of built up shapes. Beam Wt = 24654 lbs.

g. Redesign columns.

i. If the following message appears, select OK (numerous times). Use Criteria - Trial Groups to reset the trial groups to mill shapes (Figure 7 & 7a). I have reported this as a bug.

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Figure 7

Figure 7a

ii. Verify design results of tubes. Is Fy 46 ksi? Please note that we should more typically use the Butler thin wall tubes in the BldgDiv tables.

h. Use Copy menu function to make columns 2F, 2(E.3) & 7(E.3) the same as 4(E.3)

27. Additional Features & Reports a. Switch design to LRFD per the new Kaizen Design event: Beam Design – Criteria –

Steel Design Codes – LRFD. Select Design All and compare the weight from the Takeoff report. Beam Wt = 23,954 lbs (700 lbs lighter)

b. Review how to place joists on each side of column to avoid attachment and different part at column location. This is the new method specified by the Kaizen event. Hint: Place one joist at 1.25 ft from grid 7 and then space the rest at 2.5 ft centers.

c. Cantilevered Beam construction.

i. In RAM Modeler, delete beam 4(E.3) to 5(E.3). Be careful. If you select a joist instead of the beam, you will get an error message.

ii. Add 4’ cantilevered beams over columns 4 and 5 at grid E.3.

iii. Add an On Grid simple span beam between the ends of the cantilevers.

iv. Add bottom flange braces from adjacent joists at distance 7.75’ from end of cantilevers.

d. Review bldgdiv section table in handout.

e. Use F1 for help; Right click to repeat last option.

f. Review DXF import from RAM Modeler - Layout - Type - Import from DXF. See R. Vosters for additional guidelines on using this feature.

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g. Review DXF export from RAM Manager - Post- Processing - DXF File. This can be used instead of Floor Map. It will show dimensions and can be modified with AutoCAD.

h. 12 network licenses available for RAM Beam/Column, 1 for RAM Frame.

i. RAMFrame usage is limited since it cannot have slopes roofs or tapered columns.

28. Floor Vibration

a. Open either Class Tutorial #1 or RAM Tutorial from S:\RAM\Tutorial.

b. Go to the Beam module.

c. Select Vibration – AISC Design Guide #11.

d. Pick a blue colored beam.

e. An Input Data window will appear.

f. Select Evaluate and Report buttons to view the results.

Figure 8

29. Mezzanine BKP

a. Based on Kaizen event held in San Marcos in October, 2001.

b. All mezzanines detailed in SanMarcos.

c. RAMSTEEL is used for all quotes and designs.

d. New slotted, all bolted, clips to maintain constant bolt gage in column.

e. New formed pour stop.

f. Standard fastening patterns for form deck.

g. Alternates for LRFD design.

h. Updated “ballpark” pricing.

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i. Consider unshored composite design for projects > 10,000 ft2, > 4.5” concrete.

j. For an excellent overview, review "Best Known Practices Mezzanine Design".

30. BeamConnect for Connection Design a. Next Step - Interface RAMSTEEL data into BeamConnect for design of angle

connections. (See BeamConnect training module)