.Roofs

WallsExterior Walls in Elevation: see Materials & Bldg. shape

Roof is 8:12 Pitch /or slope Cladding is drawn as Brick & Stucco siding

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Roof slope

Bear

RaftersRoof framing supports - give roof profile/shape

Pitch/slope ratio - every 12” out raise the rafter 5”or 5:12

A Rafter & ceiling joist system maybe substituted for ...A System of … Roof Trusses.

Walls

Wall & Roof Framing

Rarely seen drawn out completely in a working drawing set!

need to clarify a construction condition...Use a DETAIL Like at the

Eave Rake or Ridge of Roof

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Details

focus in from general to the specific condition

•drawn in orthographic (2-D) Bldg. Section

Details:Roof detail of eaveRoof detail would be at ridge Rake wall.

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Joists or trusses in a Dwg Set. :

1st floor joists found on foundation plan or separate 1st fl. Framing plan

2nd floor maybe on first floor plan

Roof trusses or ceiling joist maybe on 2nd floor plan.

Walls

....Here are Headers(HDR) on a Roof Framing

plan even though they are part of the Wall Framing

Plan shows the Roof truss layout

Walls

Wall Framing

Tilting up the wall from the platform framing ....(here a Roof’s Rake Wall goes up.)

Sheathing

Structural infoneed to know for Roof and wall framing*headers*brace panels*bearing walls*spacing/size/span of roof truss or rafters ceiling joist

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Roof framing

*headers

*spacing/size/span of roof truss or rafters ceiling joist

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Rafters

Ridge beam

Eaves

Hips

collar-ties & ceiling joists

overhangs& Rake wall

valleys …p.129

Roof Framing – Basic components

Walls

Roof FramingFraming Contractor familiar with Common Shapes for roofs

Walls

Roof Framing sometimes drawn to show a complex roof System…most of the time ceiling joist laid over 2nd floor plan

Walls

Roof Plan is different than Roof Framing Plan -

pic of platform & balloon Wallsp.186print reading for construction

Bear

Roof slopeRoof

Framing Terms

Pitch to describe Slope or incline of roof Ratio b/w Horizontal run & Vertical rise…a 6:12 roof (…means for every 12” rafter rises 6”)Symbol is a“sideways” L with ratio (found on the bldg. section dwg.)

Roof TrussShape of roof pitchW Truss – most common / engineeredSpans longer distances

Walls

Roof Framing Common Shapes of Roof Trusses & Framing

W TRUSS

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Flat roofing system

A Detail at bldg. edge “the curb”

....insulation is rigid (not batt)

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SectionThe profile (or slope) of typical roof constructions

Insulation & ventilation key parts of enclosure system.

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Cross Ventilation at roof prevents moisture build up ...want similar amount of air in as out (sim. temp.) air flowing across roof rafter.

isometric view of eave venting

Walls

Pictorial view -Isometric of Roof Lookout Roof Framing -Eave Detail

shows how roof and wall meet ... venting & soffit