BUILDING CONSTRUCTION Flashcards
CONSTRUCTION METHODS
WOOD FRAME CONCRETE TILT UP MASONRY METAL CLAD CURTAIN CONVENTIONAL LIGHTWEIGHT (70 FT)
TYPE 1
FIRE RESISTIVE
CONCRETE OR HIGH RISE
TYPE 2
NON COMBUSTIBLE
METAL FRAME
BELOW 5 STORY CONCRETE
TYPE 3
ORDINARY PRE 33 KINGS ROW LINTELS 6" METAL PLATES/ TIE RODS
POST 33
EXTERIOR REINFORCED WITH CONCRETE
TYPE 4
HEAVY TIMBER
2 HR RATING
6X10 BEAMS
TYPE 5
WOOD FRAME
CONCRETE
5 STORIES TILT UP
POURED IN PLACE
FLAT, LIGHTWEIGHT ROOF
PRE 33 MASONRY
SAND AND LIME MORTAR
NO REBAR
STRAIGHT SHEATHING
FIRE CUT JOISTS
POST 33 MASONRY
HAS REBAR
JOISTS ANCHORED TO WALLS
CEMENT MORTAR
DIAGONAL SHEATHING
BUNGALOW/ BALLOON
4 STORIES
WOOD
NO FIRE STOPS
6 TYPES OF ROOFS
GABLE HIP FLAT BRIDGE ARCH SAWTOOTH
GABLE ROOF
CONVENTIONAL
2X6 RAFTERS
16-24 ON CENTER
36” RAFTERS FOR STEEP
LIGHTWEIGHT
2X3 WOOD TRUSSES
METAL GUSSET PLATES
24” ON CENTER
HIP ROOF
CONVENTIONAL 2X6 RIDGE BOARD 2X6 RAFTERS 16-24 ON CENTER 36" STEEP PITCH
BRIDGE TRUSS
Commercial buildings Wooden truss – 2 X 12” Metal tie rods Rafters 2 x 6 1X6 straight sheath PRE33 diagonal sheathing POST 33 Plywood decking Sloping ends
BOWSTRING ARCH
Commercial type
2X12 or 2X14
Rafters 2 x 6
1 x 6 sheathing – Straight Diagonal
LAMELLA ARCH
Gyms or supermarkets
diamond-pattern roof
2x 12 wood frame
Steel plates and bolts at junctions
Hazards – Total roof collapse if fire removes 20% of roof structure
SAWTOOTH
light and ventilation Rafters 2 x 8 Wood and/or metal supports Sheathing 1 x 6 Plywood ½” and comp
CONVENTIONAL FLAT
2X6 RAFTERS
1X6 SHEATHING
PLYWOOD AND COMP
3/8 OR 5/8 PLYWOOD
WOODEN I BEAM
WOOD PARALLEL CORDS
TOP UNDER LOAD
STEM IS PLYWOOD 3/8
24” ON CENTER
OPEN WEB
WOOD CORDS
STEEL OR WOOD WEB
70’ SPAN
24 ON CENTER
METAL GUSSET PLATE
18 GAUGE WITH 3/8 PRONGS
80 SPAN
PANELIZED
6X36 BEAMS (12-40') 100 SPANS ON BEAMS
4X12 PURLINS (8’)
2X4 JOISTS
2” PLYWOOD
