footings and foundations architectural drawing and light construction
TRANSCRIPT
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Footings and Footings and FoundationsFoundations
Architectural Drawing and Light Construction
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Frost Line0 Frost action, which is the settlement of the soil due to the freeze and thaw
of a particular climate creates damage to a building through settlement.0 To counter this action foundations must be dug and placed below the
“frost line” which is the depth in inches that the soil doesn’t freeze in the winter months. This figure changes from location to location and can be found in your local codes.
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Footings and Foundations
0Every properly constructed building must be supported by an appropriate foundation that will support the weight of the building and sustain the structure throughout all weather conditions.
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Loads
0Live Loads0 Varying weights and forces applied to the building by
various non- consistent forces.
0Dead Loads0 The weight of the structure as well as any stationary
equipment fastened to it.
0Snow Loads0 Is the weight created by the weight of snow build-up on
a structure.
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Soil types
0 Every foundation is only as solid as the soil in which it is placed upon. Bedrock is the most favored soil type to build upon due to the lack of future compaction that will occur with in the stone.
0 This compaction causes settlement which is commonly uneven and the most common of destroyer of structures.
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Radon Levels
0Radon is a colorless, odorless, tasteless gas found in soils and underground water. Its is harmful to humans.
0This gas can find its way into buildings through cracks, joints and other openings in the foundation walls and floors.
0The three basic approaches to preventing radon gas is0 The barrier approach0 Soil gas interception0 Indoor air management
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Foundation types
0 Full Basement0 Typically at a full story
height below ground, and constructed with cast-in-place concrete. Very common in colder climates where frost level require greater depths and in high-end homes where the additional space is requested.
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Foundation types0 Crawl Space
0 Shallow depth foundation, leaving roughly 2’ to 4’ between the ground and bottom of the floor joist.
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Foundation types0 Slab- on –grade
0 A concrete slab pour on the ground with a integral concrete beam at the slab edge. Typically not used in cold climates due to settlement and is the cheapest and weakest of all building foundations.
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Basement foundations0 Basement walls must be designed to resist lateral loads from soil and
vertical loads from the structure above. Made typically of poured concrete or Masonry Concrete Units (CMU).
0 These walls as for almost all foundations site on top of spread footings which provide support beneath basement walls, masonry walls and columns.
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Structural Concrete Slabs
0Are designed based on structural analysis of use. The added steel reinforcement makes the concrete slab strong enough in tension to support they applied loads without the need for supports below.
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Rebar
0 The steel reinforcement discussed in the slide before has a name commonly referred to as “Rebar”. This metal is placed in the concrete to resist the stresses that create tension with in a concrete member.
0 For this purpose the location of rebar is engineered so that the maximum amount of strength comes from the minimum amount of rebar.
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Rebar0 So describing “Rebar” it is
categorized by No. bar. The # correlates the actual diameter of a bar by 8ths of and inch so a No. 8 Bar is 1” in diameter.
0 The most common type of rod used is a deformed bar which has ridges that are used to mechanically bond the bar and concrete together.
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WallsWalls
Revit® Architecture 2012
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C H A P T E R OBJECTIVES• Learn three ways to place a Wall object.
• Use Pick Lines on an imported 2D CAD file.
• Create wall sweeps and reveals.
• Learn how to use Join Geometry, Cut Geometry, and Wall Joins.
• Modify verticallycompound walls.
• Create a profile for a Wall Sweep.
• Create a compound wall with the SWEEP command.
• Modify End Caps and Insert conditions.
• Create embedded walls.
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IntroductionWall objects are the basis of all buildings; they enclose space and give the building its character. Because buildings require a vast variety of wall types and configurations, these objects have become very sophisticated in Revit Building.
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Creating a WallYou create a wall by sketching the location line of the wall in a Plan view or a 3D view. Revit Architecture applies the thickness, height, and other properties of the wall around the location line of the wall
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Using Pick Lines on an Imported 2D CAD File
Using the Pick Lines option for creating walls allows you to pick any 2D CAD or line drawing. This is especially useful when you import a DWG, DXF, or MicroStation DGN file.
Visibility/GraphicsOverrides dialog box
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Imported Categories tab
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Modify | Place Wall toolbar
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Default 3D View button
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3D drawing with “Shadows On”
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Loading the ProfileProfiles are 2D lines that create the cross sections ( Profiles ) of Revit’s Sweeps and Reveals .
Load Family from the Insert toolbar to bring up the Imperial Library folder in the Load Family dialog box
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The Type Properties dialog box
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The Edit Assembly dialog box
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Wall Sweeps dialog box
Profile selections in Wall Sweeps dialog box
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Join Geometry, Cut Geometry, and Wall Joins
Revit Architecture makes it easy to make changes to walls using the Join Geometry, Cut Geometry, and Wall Joins tools.
Join Geometry command
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Cut Geometry button in theModify toolbar
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Default 3D View button
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Wall Joins
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Join optionsDon't Clean Join, Miter
Don't Clean Join, Butt
Don't Clean Join, Square off
Don't Clean Join,Butt, Next
Don't Clean Join,Square off, Next
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Modifying Vertically-Compound WallsYou define the structure of vertically-compound walls using either layers or regions.
The following graphics visualize the concepts of rows, layers, and regions.
Layer Rows —Correspond to layers or regions.
Wall Layer —Constant thickness and extends the height of the wall.
Regions —Neither region extends the full height of the wall.
Split Region button
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Materials dialog box“In the Materials dialog box, select Masonry – Concrete Masonry Units , and press the OK button at the bottom of the dialog box”
Concrete block added to brick wall
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Creating a Wall Sweep profile
Wall with profile added
Wall Sweeps dialog box
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Detail Level
Detail Level setting
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Exterior setting
Interior setting
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Embedded Curtain Walls
Embedded wall
Cut Geometry button
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Modify | Walls > Edit Profile
Completed embedded wall
Wall profile changed
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EMBEDDED STOREFRONT
Curtain Wall: Storefront option
Embedded Storefront wall
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Inserting structures between the Core Boundary objects
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Structure, Levels, Grids,Structure, Levels, Grids,FoundationsFoundations
Revit® Architecture 2012
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C H A P T E R OBJECTIVES• Understand and use the Grid and Level tools.
• Understand and use the Split Grid Lines tool.
• Understand and use Custom Grid Lines.
• Understand and use the Wall Foundation tool.
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IntroductionThis chapter covers the basics needed to create and modifycustom grids and structural components such as columns,beams and the beam system, trusses, and wall foundationtools
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Levels and GridsLevel and Grid tools are used to create and modify levels and grids in a drawing
level datum line grid bubbles
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3D text to 2DNOTE:3D Extents (the 3D – 2D text)allows you to have the gridlines linked in all floor plans orjust one floor plan. Experimentin all the views by turning the3D Extents On and Off andmoving grid lines.
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Propagate datum extents
Propagate datum extents dialog box
“In the Modify | Grids toolbar, press the Propagate Extents button to bring up the Propagate datum extents dialog box”
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Z - icon
The Z icon allows you to move a bubble
“In the Floor Plan: Level 1 , select grid line 1 , and click the Z icon to allow you to move the grid bubble. This is important if you have many grid lines close to each Other…”
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CUSTOM GRID LINESChange settings in the Type Properties dialog box
Adjust segmentsof a grid line
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WALL FOUNDATION
Type Properties dialog box
WallFoundationbutton