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Mastering Section Drawing: A Comprehensive Guide for Construction Professionals

This guide outlines step-by-step procedures for drawing construction sections in seven stages. From evaluating needs to evaluating the final work, it covers outlining, detailing structural members, finishing materials, dimensioning, note lettering, and assessing the quality. Detailed instructions and illustrations help in creating easily understandable sections.

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Mastering Section Drawing: A Comprehensive Guide for Construction Professionals

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  1. Chapter 37 Section Layout

  2. Introduction • Drawing sections is accomplished in seven major stages • Follow the step-by-step procedures • Sections can be easily drawn and understood • Read through each stage, and carefully compare the instructions with the corresponding illustrations

  3. Stage 1: Evaluate Needs • Differences in required construction include: • Right side of the plan is one story, and left side is two story • Rear at right is a stick floor, and front is a concrete slab • Left side of the roof is a vaulted truss, and right side is a standard truss

  4. Stage 1: Evaluate Needs (cont’d.) • Minimum of two full sections is required to provide needed information • One cuts through the family room and kitchen • Shows concrete floor, walls, upper-floor cantilever, and truss roof • A full section is needed through the garage • Shows concrete and wooden floor construction • Partial sections show stairs and vaulted roof over bedroom 1

  5. Stage 2: Lay Out the Section • Use construction lines for entire stage • Use a nonreproducible blue pencil or a 6H lead • If working with AutoCAD, place materials on a layer (e.g., OUTL) • Section includes layouts for: • Concrete slab foundations • Walls • Truss roof

  6. Stage 3: Finished-Quality Lines for Structural Members Only • Drawing with finished-quality lines • Start at the roof and work down • Steps followed are divided into: • Truss roof • Walls • Upper walls and floor • Lower walls • Foundation

  7. Stage 3: Finished-Quality Lines for Structural Members (cont’d.) • Continuous members • Diagonal cross (X) in the member • Blocking • One diagonal line (/) through the member • Members are also be drawn with different line qualities • Thin, bold, and very bold

  8. Stage 4: Drawing Finishing Materials • Material drawn in this stage seals exterior from weather and finishes the interior • Start at the roof and work down to foundation • Use thin lines for this stage unless otherwise noted

  9. Stage 5: Dimensioning • Leader lines should be thin • Lettering should be aligned • If using AutoCAD, place dimensions using the DIM command and ANNOTATIVE feature

  10. Stage 6: Lettering Notes • Place guidelines around drawing perimeter • Align required notes on the guidelines • Typically, the primary section will be fully notated, and other sections will have supplemental notes • General notes are included for: • Roof • Walls • Upper floor and foundation

  11. Stage 7: Evaluating Your Work • Run a print, and evaluate it for accuracy and quality • Compare with someone else’s • Use a checklist • Get away from the drawing for an hour or two and then go back to it

  12. Section-Trusses Checklist • Refer to the text for a complete truss checklist, including: • Plotting • Drawing • Dimensions

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