Chapter 23 Design Requirements Flashcards
Sawn lumber is…
Regular Wood
Sawn lumber complies with..
DOC PO 20 or equivalent
Sawn lumber inspection required if thickness is..
larger than 3 inches
Structural Glue-laminated timber complies with…
ANSI/APA 190.1 and ASTM D3737
Wood structural panels comply with
DOC PS 1, DOC PS 2, or ANSI/APA PRP 210
Wood structural panels where permanently exposed to outdoor shall be made of..
exterior type (if underside of roof sheathing its Exposure type 1)
Fiberboards complies with
ASTM C208
Hardboards comply with
ANSI A135.6
Hardboard underlayment strength requirements..
7/32 inch - 1/4 inch service class hardboard planned
or sanded on one side no less than .2 inches
Moisture content of lumber shall be
19 % or less
Particleboard shall comply with
ANSI A208.1
Particleboard floor underlayment shall be no less than..
1/4 inch thick
Preservative-treated wood shall comply with..
AWPA UI and M4
Fire retardant treated wood shall comply with…
ASTM E84 or UL723
Fire retardant treated wood fire test shall..
be 20 mins and shall not go more than 10 1/2 feet beyond centerline
Moisture Content in Wood structural panels
15% or less
Fire retardant treated wood when exposed to weather shall be identified as…
Exterior
Truss Design Drawing Requirements..
Section 2303.4
Truss members shall not be..
cut, drill, notched, or spliced unless approved by design professional
Nails used for framing and sheathing shall have minimum average bending yield strengths of…
- 80 kips per square inch for shank diameter
of .177 inch - .254 inch - 90 kips per square inch for shank diameter
of .142 inch - .177 inch - 100 kips per square inch for shank diameter
of .099 inch - .142 inch
Studs shall have a full bearing on a…
1 1/2 inch or larger plate or sill shall have no less than equal to stud
Combustible fibers shall be around flues and chimneys no less than..
2 inches
Combustible fiber away from flue openings shall be atleast
6 inches
Sheathing nails or other approved sheathing connectors shall be…
driven so that their head or crown is flush with surface
Fasteners for Preservative-treated wood shall be…
hot-dipped zinc coated galvanized steel, stainless steel, silicon bronze, or copper
Connectors for Preservative-treated wood shall be…
ASTM A653, Type G185 zinc coated galvanized steel or equivalent
Fasteners for fire retardant treated wood in exterior or wet/damp locations
hot-dipped zinc coated galvanized steel, stainless steel, silicon bronze, or copper
Fasteners for fire retardant treated wood in interior
manufacturers recommendations
Sheet metal clamps, ties, or clips shall be form of..
galvanized steel and .0329 inch corrosive resistant at base
Where framing members are not continuous from the foundation sill to the roof…
the members shall be ensure a continuous load path
Wood joints or wood structural floors that are closer than 18 inches to the exposed ground in crawl spaces or unexcavated areas located within the perimeter of the building foundation shall be of
naturally durable or preservative treated wood
Wood girders that are closer than 12 inches to the exposed ground in crawl spaces or unexcavated areas located within the perimeter of the building foundation shall be of
naturally durable or preservative treated wood
Wood framing members, including wood sheathing in contact with exterior foundation wall and less than 8 inches from exposed earth shall be made of
naturally durable or preservative treated wood
Wood framing members and furring strips in direct contact with the interior of exterior masonry or concrete walls below grade shall be of..
naturally durable or preservative treated wood
Sleepers and sills on a concrete or masonry slab that is in direct contact with earth shall be…
naturally durable or preservative treated wood
Clearance between Wood Siding and earth on the exterior of a building shall be no less than
6 inches
or 2 inches vertical from concrete steps, porch/patio slabs
The ends of wood girders entering exterior masonry or concrete walls shall be provided with..
1/2 inch airspace on top, sides, and end
Post and column supporting permanent structures and supported by a concrete/masonry slab or footing shall be…
be naturally durable or preservative treated wood
Seismic Design Category
A and B - allow three stories
C - allow two stories
D and E - allow one story
Maxiumum floor to floor height shall not exceed..
11 ft 7 inches
Exterior bearing wall and interior braced wall heights shall not exceed a stud height of….
10 ft
Foundation plates or sills shall be bolted or anchored to the foundation with no less than…
1/2 inch diameter steel bolts
Anchored Bolts shall be embedded into concrete or masonry with no less than..
7 inches
Anchored Bolts shall be located in..
middle third of the width of the foundation plate
Anchor Bolts shall be spaced no more…
than 6ft on center
Anchor Bolts shall be no less than two bolts or anchor straps for per piece with…
one bolt or anchor straps 4 - 12 inches from each other
Sill plates along braced wall lines in Category D shall be anchored with no less than..
1/2 inch diameter anchor bolts with steel plate washers
Steel plate washers dimensions shall be no less than..
.229 inch x 3 inch x 3 inch
Sill plates along braced wall lines in Category E shall be anchored with no less than..
5/8 inch diameter anchor bolts with steel plate washers
Girder for single story constructions shall be no less than…
4 inches by 6 inches for 6 feet or less
girders shall be spaced no more than
8 feet on center
The bearing at the end of each joist shall have not less than…
1 1/2 of bearing on wood or metal
3 inch of bearing on masonry
Notches on the ends of joist shall not exceed…
1/4 of the joist depth
Notches in top and bottom of joist shall not exceed…
1/6 of the depth
Joist supporting bearing partitions shall not…
be offset from supporting girders, walls, or partitions
Floor and ceiling framing with a nominal depth-to-thickness ratio shall be no less than….
5 to 1
Studs shall be placed with their…
wide dimensions perpendicular to the wall
How many studs should there be at each corner of an exterior wall?
No less 3 studs
Bearing and exterior wall studs shall be capped with…
double top plates
End joints in double plates shall be off set no less than…
48 inches
Foundation cripple walls shall be framed with the same studs as?
The studing above
Exterior cripple walls minimum length
14 inches or framed of solid blocking
Exterior cripple walls exceeding 4 feet
shall have studs required for additional story
What is required when a sole plate or top plate is cut to accommodate pipes for plumbing Or heating in walls?
- a metal tie .058 inch and 1 1/2 inch in width fastened to each plate
- each side of opening with no less than 16d nail
In exterior walls and bearing partitions, a wood stud shall not be cut or notched in excess of…
25% of the its depth
In non-bearing partitions, a wood stud shall not be cut or notched in excess of…
25% of its depth
In non-bearing partitions, a wood stud shall not be cut or notched in excess of…
40% of its depth
Bored holes in wood studs;
stud depth max.
40%
Bored holes in wood studs;
stud depth max in nonbearing partitions.
60%
The edge of the bored should be no closer than
5/8 inch to the edge of stud
Where roof slope less than 25% members supporting rafters and ceiling joints shall be designed…
as beams
Minimum nominal thickness of ridge board
1 inch at ridges
Ceiling joists shall have a bearing surface of not less than…
1 1/2 inch on the top plate at each end
Where ceiling joists are not parallel to rafters, rafter tie shall be spaced…
no more than 4 ft on center
Rafter tie shall be spaced…
no more than 4ft on center
Notching at the ends of rafters/ceiling joists shall not exceed…
1/4 the depth
Trimmer and header rafters shall be doubled, or of lumber of equivalent, where the span of the header exceeds…
4ft
The maximum span of 2x4 purlins shall be..
4ft
The maximum span of 2x6 purlins shall be..
6ft
Struts shall be no less than..
2 inch x 4 inch members
The braced length of struts shall not exceed…
8ft