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WALL FRAMING

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  1. WALL FRAMING

  2. Interior & exterior walls • basic wall components • bottom plate • studs • top plates • headers • bracing • sheathing • finishing materials

  3. Plates • most common assembly consist of onebottom plateand two top plates for wood framing • refer to wall sectionsfor sizes • refer to specifications for grade of lumberused

  4. Plate takeoff • plates are required for exterior walls and interior walls • NOTE: exterior and interior walls may be different is size therefor perform takeoff separately • multiply the total linear feetof wall by the number of platesrequired in the wall sections • length’ of walls * number of plates • NOTE: do not deduct for openings

  5. WOOD STUDS • studs, like plates should be taken off separately based on sizes required • Studs are most commonly 2” X 4” @ 16” O/C or 2” X 6” @ 16” O/C

  6. WOOD STUD TAKEOFF • review specifications and drawings for spacing and lumber grade • FORMULA # studs = roundup (length’ of wall / 1.33) or # studs = roundup (length’ of wall * 0.75) • 1.33 and 0.75 is for 16” o/c studs NOTE:do not deduct for openings

  7. WOOD STUD TAKEOFF • after number of studs are calculated add the following • for every corner or end add 1 stud • for every intersection add 2 studs • for every opening add 2 studs

  8. WOOD HEADERS • headers are required to support the weight of the building over openings • check the specs. and drawings to determine if headers are built-upwood , engineeredor cripples

  9. WOOD HEADERS • a built-up header is made up of 2 pieces of lumber usually 2” x 4”, 6”, 8”, 10” or 12” • header length must also be considered • usually the header must extend over the top of one stud on either side of the opening ( jack stud )

  10. Exterior sheathing • most common materials are • plywood sheathing • OSB sheathing • rigid insulation • exterior sheathing is taken off in square feet • check wall sections to exact area of wall to be covered • height’ of area covered by sheathing X length’ of wall • do not subtract for openings

  11. Air barrier • air barrier is used to allow moisture to escape from the inside but prevent wind from entering • common type is TYVEX • taken off in square feet but ordered by the roll • check wall sections to exact area of wall to be covered • do not subtract for openings

  12. Insulation • common types used are: • batt insulation • rigid insulation • blown-in • batt insulation is friction fit between the studs

  13. Insulation • insulation is made in different thickness to meet the building code R-value requirements • different locations in a home require different R-values

  14. Insulation • insulation is taken off in square feet but ordered in bundles • check specifications and interior walls for sound insulation • do not subtract for openings smaller then 50 sf • thickness and framing spacing must be taken into consideration

  15. Vapour barrier • vapour barrier must be placed on the warm side of the structure usually between interior face of stud and drywall • check wall sections for all locations • taken off in square feet but ordered in rolls • do not subtract for any openings • all joints should be taped or caulked

  16. REMEMBER • -TEST NEXT WEEK