Special modeling technique& hints in Safe v12.3.2 1-drawing objects in horizontal or vertical direction only From Draw > snap options
2-making the drawing panel blank in safe program
3-special topics in dividing shell elements:
Very powerful tool used in addition of none elements to divide shell elements
None property can be used to assign wall loads, dividing shell elements cutting design strips at certain point.
4-using trim command in safe program Edit > align points/lines/edges
5-drawing point from specific location
Plan offset X = offset value from the specific location in X-direction Plan offset Y = offset value from the specific location in Y-direction
6-define column sections in safe program
` When the option to Include Automatic Rigid Zone Area over Column is specified, the rigidity of the connection increases, causing deflection and slab reinforcement to decrease. Further, unbalanced moments generally increase, leading to higher punching shear ratios. While this modeling decision is at the discretion of the engineer, we generally recommend including the rigid zones over column objects.
7- Modeling slabs with variable thickness
To model slabs with variable thickness and loading in SAFE, it is best to create a base slab which spans the entire floor, and then draw slabs of variable thickness over the base slab to adjust local geometry and loading. Contained-area slabs drawn over the base slab will take precedent. This applies to every area object except drop-panels. To apply variable loading, assign NONE properties to containedarea slabs, then select Assign > Load Data to specify load magnitude and direction 8- Modeling slabs with variable loading: To apply variable loading, assign NONE properties to contained-area slabs. Then select Assign > Load Data to specify load magnitude and direction
9-How is the depressed portion of a slab modeled such that elevation varies? Slab elevation may be set by right-clicking on the slab which will be depressed, then within the Assignments tab, adjust the vertical offset relative to the top of the slab. Positive adjustment raises the slab, whereas negative depresses. NOTE: Be sure to un-check Ignore Vertical Offsets, available through Run > Advanced Modeling Options, when manually adjusting slab elevation.
10-How do I assign one-way slab behavior?
Stress is distributed according to the relative rigidity of supports.For example, when parallel walls connect to either side of a continuous slab, one-way action results, to enforce one-way action, assign small m11 or m22 stiffness modifiers to the slab. These modifiers, available through Assign Area > Stiffness Modifiers, should be applied relative to the local axes and the desired direction of one-way action. 11-drawing openings in safe program
12-drawing axis in special location: (can be drawn manually using the following menu)
13-importing from AutoCAD program Use layers in cad like Safe-beams, safe-columns, safe-walls, safe-none, safe-grids, safe-slabs, safeopenings Slab and openings should be polyline Columns should be polyline Walls & beams & grids & none should be single lines Save cad file in dxf format From safe program File > import > dxf/architectural plan Use the following menu to convert every object to safe
First select one layer from above and convert as follows
Do the same for all other layers.
Note columns can be made by one drag after selecting all elements in column areas
Also the most important thing that cardinal points = 10(centroid) Beams element that will be exported from cad drawing should be drawn in the center of existing beam And it can be connected to any point of the column. General notes: Safe doesn’t calculate punching shear for columns beside openings it should be done manually Design strips should be drawn to cover the entire plan in safe program as column strip with thickness = 1m and spacing = 1m for both x & y directions.
15-Beam section should be defined as L-section or T-section to represent an rectangle section to avoid excessive load from intersection between slab and beam.
16-Note when defining L-section for edge beam the following command should be used with extrude view when the beam location isn’t O.k.
17-Drawing a slab from a certain point as follows
Where X dimension (Total length of the new slab in x-direction) Where Y dimension (Total length of the new slab in Y-direction)
18-To modify distance between horizon use the following menu
19-To apply a uniform mesh to slab use the following menu
Hint: Reinforcement display typeshows the additional Top & Bottom bars while typical uniform reinforcing shows main mesh.
20-To display column’s reactions inside a box use the following menu:
