Spacegass PDF

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Summary

How to use spacegass in design...

Description

Frame analysis using Space Gass 1) Define material properties, geometry of the frame, member sizes, restraints and member fixities 2) Input primary loads such as SW, DL and LL and wind loads 3) Define load combinations required for design 4) Analyse the structure 5) Obtain design actions, such as M*, V*, N* and deflections resulting from critical load combinations

1

Note: this Example has different load values to your project 2 4 3 R

A 5m

3.0m 2

B 3.0m

5m 1 C

3.0m 5m D 5.0m

6.0m

2.0m

5.0m

6.0m

2.0m

Columns: 325x325mm

Deadload (on beams) = 10kN/m

Beams: 350x600(dp)mm

Live load = 5kN/m

Use Structure Wizards to define geometry

Select structural frame (2D multi-storey)

Input dimensions of the Building

Enter spacing between members

Select concrete

Your frame is created

Delete columns on Grid 4

Select and delete

Edit member sizes and material properties

Click to select members

Select columns and right click -> Properties (Form)

Label Section

Shape Builder

Delete default section

Choose solid bar section type

Input column dimension

Repeat same procedures for beams

Beam-column joints are fully continuous

Check support and member releases (pins)

Column bases are pinned to avoid moment

Define load cases

Case 1: self weight Case 2: superimposed Dead Case 3: Live Etc…

Define self-weight

-1g in Y-direction in Case 1

Assign Superimposed Dead loads by floor level

Select roof beams and press “distributed load” button

Case 2

Input superimposed dead load magnitude in Y-dir

Assign Superimposed Dead loads on cantilevered beams Level 1 and 2 using node loads

Case 2

Similarly, assign Live loads by floor level

Select load case

Use this button to see/hide loads

Spacegass grillage analysis - Load case Inputs • Primary Load case inputs – Load case 1: self weight (dead load) of RC frame (spacegass calculates provided you have specified section size and material type) – Load case 2: superimposed dead loads – Load case 3: Live load

• Combination load case input – Load case 10: Serviceability Short-term (1.0x dead load x 0.7 Live load) – Load case 11: Serviceability Long-term (1.0x dead load x 0.4 Live load) – Load case 12: Ultimate (1.2x dead load x 1.5 Live load)

Define Load Combination

Combination Case 12 = 1.2G+1.5Q Note: You cannot repeat the case number for load combination

Now, ready to carry out analysis: Linear Static Analysis

Analyse all load cases: Load Cases List: 1-12

View analysis results graphically

Bending moment button

View analysis results graphically

Shear Force button

Generate text report

Output -> text report and select report content

Generate text report

Use “Query” function to see individual member forces...