Engineering: Calculate your Allowable Stress Design (ASD) Load Combinations
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Summary at a Glance
Design Loads for Residential Buildings.

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When your engineer asks you for your estimated design loads because you know drafting and did a 3D model of your dream home. 


  • Residential minimum design requirements
    • Site Plan
    • Floors
    • Foundation and Roof Plans
    • Elevations and Building Sections (minimum two building sections)
    • Building Details
    • Plumbing Plan (water supply line sizes, gas supply line sizes, water-heating equipment, hot water recirculation pump controls, fixture flow and flush rates)
    • Mechanical Plan (equipment type/size, supply/return, outside air ventilation, exhaust fan systems)
    • Electrical Plan (lighting, power, load calculation, single line diagram)
    • Plans must be readable and to "scale".
    • Place all required notes on the drawings.
    • Specification books on Single Family Plan checks are not acceptable
    • Provide a True North Arrow and an Orientation North Arrow on site plans and floor plans.
    • Exits and Emergency Escapes
    • Light, Ventilation and Sanitation
    • Yards and Courts
    • Sanitation
    • Room Dimensions
    • Smoke Detectors
    • Heating
    • Attached Garages
    • Attached Carports
    • Stairways And Landings
    • Handrails
    • Detached Garages And Accessory Buildings

Workshop Categories (MATH Help): 

Calculating Structure weights and loads 

Weights of Building Materials

  • Roofing
    • Wood shingles = 3.0 psf
    • Asphalt shingles = 2.5 psf
    • Wood shakes = 6.0 psf
    • Clay tile = 9.0 to 14.0 psf
  • Materials
    • 5/8" plywood = 1.8 psf
    • 3/4" plywood = 2.3 psf
    • 1 1/8" plywood = 3.4 psf
    • 2" (nom.) decking = 4.3 psf
    • 1" (nom.) hardwood floor = 4.0 psf
    • Linoleum = 1.5 psf
    • 3/4" ceramic tile or quarry tile = 10.0 psf
    • 3/4" gypcrete = 6.5 psf
    • 1/2" gypsum board = 2.2 psf
    • 5/8" gypsum board = 2.8 psf
    • Plaster (1" thick) = 8.0 psf
    • Acoustical tile = 1.0 psf
    • 1" Cement plaster = 12.0 psf
    • 1" Rigid fiberglass = 1.5 psf
    • 1" Glass wool = 0.3 psf

Douglas Fir Members
Weights In Pounds Per Square Foot

  Spacing (inches)
Sizes 12" centers 16" centers 19.2" Centers 24" centers
         
2 x 4 1.4 1.1   0.7
2 x 6 2.2 1.7   1.1
2 x 8 2.9 2.2   1.5
2 x 10 3.7 2.8   1.9
2 x 12 4.4 3.3   2.2
3 x 6 2.4 plf      
4 x 4 3.2 plf      
4 x 6 5.0 plf      
4 x 8 6.8 plf      
4 x 10 8.6 plf      
4 x 12 10.4 plf      

 

 


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