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TYPICAL RESIDENTIAL DECK DESIGN
PRINCE WILLIAM COUNTY, VIRGINIA
Department of Development Services
Building Development Division
5 County Complex CourtPrince William, VA 22192-9201
703-792-6930SHEET 1 OF 17
TYPICAL RESIDENTIAL DECK DESIGN
PRINCE WILLIAM COUNTY, VIRGINIA
Department of Development Services
Building Development Division
5 County Complex CourtPrince William, VA 22192-9201
703-792-6930
Prince William CountyTypical Deck DetailsBased on Virginia Uniform Statewide Building Code ~ Version 2009-10-01
CONTENTS
General Notes........................................................2Ledger Fasteners...................................................11
Deck Framing Plan................................................3Rim Joist Attachment............................................11
Cross Section of Deck Connected to House.......4Built-Up Beam......................................................11
Free Standing Deck Framing Plan........................5Stairway Requirements..........................................12
Cross Section of Free Standing Deck..................6Tread, Riser, and Stringer Detail.........................12
Lateral Support of Free Standing Deck...............7Stairway Landing Details.......................................13
Framing Plan at Chimney or Bay Window...........8Stairway Connection to Deck................................14
Post-to-Beam Connection....................................8Handrail Details.....................................................14
Joist-to-Beam Connection...................................8Do Not Do's...........................................................15
Footing Details.......................................................9Stairway Illumination..............................................16Guardrail Post Connection.....................................9Clearances.............................................................16
Ledger Board Connection......................................10Inspection and Scheduling....................................17
PRINCE WILLIAM COUNTY, VIRGINIA TYPICAL RESIDENTIAL DECK DESIGNSHEET 2 OF 17
THINGS TO BRING FOR PERMIT
Important! Zoning Permit. You must bring a copy of your house location plan that shows the proposed
location of the deck, drawn to the same scale as the plan. Show the side yard and rear yard distances
(setbacks from property lines) on the plan.
NOTES ON DESIGN
·No changes shall be made to approved plans without prior approval from the Building Construction Review Branch.
·Approved deck plans shall not be used for supporting hot-tub installation, without re-submission for review.·All metal connections, bolts, joist hangers, etc. shall be galvanized or corrosive resistant.·All lumber shall be pressure treated Southern Pine, grade #2 or better.·Building permit is not required if all portions of the top of the deck's flooring is within 16.5 inches from the finished grade unless it carries structural load, e.g. hot-tub. All decks require zoning permit.·Setback and Permit Standards for At-Grade Structures
Provisions in the Prince William County Zoning Ordinance for at-grade decks and patios differ from those
in the Building Code. In the Zoning Ordinance, the standards are as follows: "Patios, decks, walkways, steps and driveways constructed no higher than eight (8) inches above existing grade of the contour of the land where located may encroach within any setback provided that no permanent above-grade affixed
structures such as railing, planters, benches, roofs or other appurtenances are installed."·Column spacing and joist spans shown are maximum. Smaller decks may be constructed utilizing the same structural members.
·The typical residential deck design shall be strictly adhered to. All deviations from these drawings shall
require an independent set of design documents to be prepared and submitted to the Construction Plans Review Branch for review.
·If a proposed deck does not conform to these typical design details, a custom design can be submitted to
the Building Construction Review Branch. Submit two (2) copies of the design, including framing plans, cross sections, and stringer details for review.·Material requirements are as follows:
·Please go to www.treatedwood.com/products/preserve/ for a list of hardware manufacturers that recommend hardware for use with Alkaline Copper Quaternary (ACQ) treated wood.·Decking composed of foreign lumber, plastic or manufactured materials may be substituted only when the
product has an approved evaluation report from ICC-ES or from an accredited testing laboratory.
Component
Nails, screws, lag screws, and bolts shall be
Hardware (joist hangers, anchors, clips and angles) shall be
Flashing shall be
Requirement
hot-dipped zinc galvanized, stainless steel, or
approved for use with ACQ, CA, or CA-B
·hot-dipped galvanized with a 1.85 oz/sf of zinc (G-185 coating) or·Stainless Steel (type 304 or better)·Examples"Zmax" from Simpson Strong-Tie"Triple Zinc" from USP
copper, stainless steel, silicon, bronze, or UV-resistant plastic , and hot-dipped galvanized steel with a G30 zinc coating
GENERAL NOTES
Notes: In all cases, electroplated galvanizing is NOT acceptable. ICC Evaluation Report and testing data are required to substantiate decay resistance of plastic.
1
1
2
1
2
PRINCE WILLIAM COUNTY, VIRGINIA TYPICAL RESIDENTIAL DECK DESIGNSHEET 3 OF 17
GP
TP
TP
TP
GP
GP
GP
GP
Jo
ist:
2x8 @ 16" OC
Typ
ica
l
(2)-2x10 Beam
:F
igure 16, sheet 11
Typ
ica
l
TP
Treated Post 6x6
Guard
rail Post 4x4 (treated)
Exte
rio
r wa
ll
of house
Guardra
il Post Connection:
Figure 10, sheet 9
6x6 Post:
Figure 7, sheet 8
Typ
ica
l
Ledger Connection:
Figure 11 or 12, sheet 10
AND F
igure 14, sheet 11
Ch
imney or
Bay W
indow
:
Figure 6, sheet 8
Inte
rmed
iate Land
ing:
Figure 19 and 20, sheet 13
Handra
il:
Figure 22,
sheet 14
Rim Jo
ist:
Figure 15, sheet 11
Typ
ica
l
4x4 Ra
il Post
Deck
ing:
Tab
le 1
sheet 8
5' Max.
2' Max.
2' Max.
8' Max.
8' Max.
5' Max.
Spacing 10' Max. 4' Min.
Sta
irway:
Figure 17,
sheet 12
Ground Land
ing:
Figure 20, sheet 13
Doub
le Jo
ist
Attachment:
Figure 13, Sheet 10
Doub
le Jo
ist:
(2)-2x8
Typ
ica
l
FIGURE
1: DECK
FRAM
ING
PLAN
Exte
rior house cond
ition sha
ll not conta
in any of
the fo
llow
ing: pre
fabricated floor
jois
t
system
(w
ithout at
least 11 4"
solid band board
), brick venee
r, stone
or cu
ltured stone
on
the wa
ll, or canti
lever.
(refer to shee
t 5 fo
r free stand
ing dec
k)
PRINCE WILLIAM COUNTY, VIRGINIA TYPICAL RESIDENTIAL DECK DESIGNSHEET 4 OF 17
(refer to sheet 6 for free standing deck)
FIGURE 2A: CROSS SECTION OF DECK CONNECTED TO HOUSE
(refer to sheet 6 for free standing deck)
FIGURE 2B: CROSS SECTION OF DECK CONNECTED TO HOUSE
5'-0" OC Max.
36" M
in.
11' Max.
2' Max.
24" M
in.
12' max.
2x2 Min. Pickets shall
be attached to side rails
by one of the following methods:
A. (1)-#8 screw top and bottom
B. (2)-8d spiral nails top and bottom
(2)-2x10 Beam:Figure 16, sheet 11
Openings shall not allow the passage of a 4" diameter
sphere
6x6 Post
Footing:Figure 9, sheet 9
Side Rail
2x4 Min.
Top Rail2x4 Min. or
5
4 board
finished
grade
rim joist
Ledger Connection:
Figure 11 or 12, sheet 10
AND Figure 14, sheet 11
GP
TP
4x4 post shall NOT
be notched
finished
grade
Joist-To-Beam:
Figure 8, sheet 8
Post-To-Beam:
Figure 7, sheet 8
Stairway Requirements:Figure 17, sheet 12
Stringer Detail:Figure 18, sheet 12
Stairway Connection:
Figure 21, sheet 14
Ledger Connection:
Figure 11 or 12, sheet 10
AND Figure 14, sheet 11
Guardrail Post
Connection:
Figure 10, sheet 9
Intermediate Landing:Figure 19 and 20, sheet 13
PRINCE WILLIAM COUNTY, VIRGINIA TYPICAL RESIDENTIAL DECK DESIGNSHEET 5 OF 17
GP
TP
TP
TP
GP
GP
GP
GP
Jo
ist:
2x8 @ 16" OC
Typ
ica
l
(2)-
2x10 Beam
:F
igure 16
, sheet 11
Typ
ica
l
TP
Treated Post 6x6
Guard
rail Post 4x4 (t
reated)
Guardra
il Post Connection:
Figure 10
, sheet 9
6x6 Post:
Figure 7
, sheet 8
Typ
ica
l
Rim Jo
ist:
Figure 15
, sheet 11
Typ
ica
l
4x4 Ra
il Post
2' Max.
2' Max.
8' Max.
8' Max.
2' Max.
5' Max.
8' Max. 4' Min.
5' Max.
Deck
ing:
Tab
le 1
sheet 8
Handra
il:
Figure 22
, sheet 14
Sta
irway:
Figure 17
, sheet 12
Inte
rmed
iate Land
ing:
Figure 19 and 20
, sheet 13
Ground Land
ing:
Figure 20
, sheet 13
(2)-
2x10 Beam
:F
igure 16
, sheet 11
Typ
ica
l
FIGURE
3: FREE
STAND
ING
DECK
FRAM
ING
PLAN
Deck sha
ll be free stand
ing when adjacent house cond
ition conta
ins any of
the fo
llow
ing: pre
fabricated
floor
jois
t system
(w
ithout at
least 11 4"
solid band board
), brick venee
r, stone
or cu
ltured stone
on the
wa
ll, or canti
lever.
Requ
ired Bridg
ing
at each guard
rail
post
PRINCE WILLIAM COUNTY, VIRGINIA TYPICAL RESIDENTIAL DECK DESIGNSHEET 6 OF 17
FIGURE 4A: CROSS SECTION OF FREE STANDING DECK
FIGURE 4B: CROSS SECTION OF FREE STANDING DECK
Deck shall not be anchored to face of house
Deck shall not be anchored to face of house
6x6 Post
Footing:Figure 9, sheet 9
finished
grade
rim joist
GP
TP
2x2 Min. Pickets shall be
attached to rails by one of the following methods:
A. (1)-#8 screw top and bottom
B. (2)-8d spiral nails top and bottom
Side Rail
2x4 Min.4x4 post shall NOT
be notched
(2)-2x10 Beam:Figure 16, sheet 11
Openings shall not allow the passage of a 4" diameter
sphere
5'-0" OC Max.
36" M
in.
14' Max. w/bracing
6' Max. w/o bracing
2' Max.
24" M
in.
8' Max. 2' Max.
Brac
ing:
Figure 5, sheet 7
Top Rail 2x6 or 5
4 board
finished
grade
Joist-To-Beam:
Figure 8, sheet 8
Post-To-Beam:
Figure 7, sheet 8
Stringer Detail:
Figure 18, sheet 12
Stairway Connection:
Figure 21, sheet 14
Guardrail Post
Connection:
Figure 10, sheet 9
Stairway Requirements:
Figure 17, sheet 12
Intermediate Landing:
Figure 19 and 20, sheet 13
PRINCE WILLIAM COUNTY, VIRGINIA TYPICAL RESIDENTIAL DECK DESIGNSHEET 7 OF 17
FIGURE 5A: LATERAL SUPPORT OF FREE STANDING DECK
Deck bracing shall be provided when deck height is greater than 8'-0" above grade.
FIGURE 5B: LATERAL SUPPORT FOR ALL DECKS
Knee bracing shall be provided when deck height is greater than 8'-0" above grade.
Free standing decks shall be braced with 2x6 diagonal bracing corner to corner at the underside of floor joists
using an 8d nail at each joist, or by installing 2x6 decking diagonally.
Joist (2)-2x10 BeamRim Joist 4x4 Rail Post
2x6 Diagonal Bracing
(or 2x4 minimum for bracing parallel to beam)
6x6 PostDecking
Beam
use 2x8
blocking when
joist and post
do not allign
(1)-1
2" dia.
thru-bolt with
washers,
Typical
Bracing Parallel to Beam Bracing Perpandicular to Beam
when joist
and post are
alligned
2x4,
Typical
2'
2' 2'
2'
14
' Max.
finished grade
Beam
(when required)Required bridging
at each guardrail
post
FIGURE 6: FRAMING PLAN AT CHIMNEY OR BAY WINDOW
Exterior house condition shall not contain any of the following: prefabricated floor joist system (without at least 11
4" solid band board), brick veneer, stone or cultured stone on the wall, or cantilever.(refer to sheet 5 for free standing deck)
PRINCE WILLIAM COUNTY, VIRGINIA TYPICAL RESIDENTIAL DECK DESIGNSHEET 8 OF 17
FIGURE 7: POST-TO-BEAM CONNECTION
FIGURE 8: JOIST-TO-BEAM CONNECTIONS
Chimney orBay Window
6' Max.
2" Min.
Decking
Ledger Board
Deck Jo
ists
Double Joists and
Double Headers
Joist hangers requiredat intersections
3' Max.
TABLE 1: DECKING
Joist
Spacing
Thickness of
Diagonal Decking
Composite Material2x 5
4x
16" OC YES YES NO
12" OC YES YES YES
Treated Southern Yellow Pine #2 or better Trex or similar, must be rated to support
40 PSF or 200 pound concentrated load
1
2" diameter
thru-bolt and
washers,
Typical
notch post to match beam
(2)-2x10Beam
6x6 Post
OPTION 1
(3)-8d toe nailed(2 on one side,1 on the other)
hurricane tie
or similar
joist hanger
OPTION 2 OPTION 3
top of joist and beam must be at
the same level
(2)-2x10 beam
1
2
1
2®
·All footings shall bear on solid ground; bearing conditions shall be verified in the field by an approved Third Party Inspector or by County Inspectors prior to placement of concrete. The bottom of all footings closer than
5'-0" to the exterior wall of the existing house must be extended down to undisturbed soil.·Pre-manufactured post anchors shall be galvanized with 1.85 oz/sf of zinc (G-185 coating) or shall be stainless steel.
·All concrete must be properly mixed per specifications.
FIGURE 9: FOOTING DETAILS
PRINCE WILLIAM COUNTY, VIRGINIA TYPICAL RESIDENTIAL DECK DESIGNSHEET 9 OF 17
FIGURE 10: GUARDRAIL POST CONNECTION DETAIL
frost
depth
undisturbed
soil
24" M
in.
finished
grade
18" square OR20" dia. round
8" M
in.
pre-manufactured
cast-in-place post anchor
8" M
in.
8" M
in.
post anchor
post anchor
provide seal to prevent
seapage of water
Option 1 Option 2 Option 3
guardrail post
1
2" dia.
thru-bolt
and washers,
Typical
2x8 blocking
End nail w/10d nails top and bottom, each side
(if hold-down is not used)
outside
joist
hold-down anchor
(optional) w/1
2" dia.
thru-bolts and
washers
outside joist
guard post
1
2" dia.
thru-bolt and
washers,
Typical
rim joist
hold-down anchor
(optional) w/1
2" dia.
thru-bolts and
washers
joist
joist
rim joisthold-down
anchor
(optional)
hold-down
anchor
(optional)
rim joist
joist
Guardrail Post to Outside Joist Guardrail Post to Rim Joist
SECTION PLAN SECTION
PLAN
(at joist)
PLAN
(between joists)
attach per rim joist details
(if hold-down is not used)
FIGURE 11: LEDGER BOARD CONNECTION TO DIMENSIONAL BAND BOARD
FIGURE 12: LEDGER BOARD CONNECTION TO FOUNDATION WALL
PRINCE WILLIAM COUNTY, VIRGINIA TYPICAL RESIDENTIAL DECK DESIGNSHEET 10 OF 17
FIGURE 13: DOUBLE JOIST ATTACHMENT
TO LEDGER BOARD
Decking
Flashing
1. Flashing is requred at any ledger board
connection to a wall or floor assembly of frame construction.
2. Flashing shall be corrosion resistant.
3. Install flashing per manufacturer's recommendations.
2x8 Deck Joist @ 16" OC,
Typical
2x8 ledger board shall be
pressure treated No. 2 Southern Pine or better
1
2" diameter bolts and washers, OR 1
2"
diameter lag screws where the tip of the lag screws shall fully extend beyond the inside face of the band joist.
Floor Joist
Foundation
Wall
Existing band boardminimum 11
4" width
Exterior wood framed
house wall
Flashing to protect
ledger board
Decking
2x8 Deck Joist @ 16" OC,
Typical
If concrete wall, use 1
2" diameter expansion anchors, embeded 3" into wall.
If hollow masonry wall, use 1
2" diameter epoxy anchors or equal, embedded 3
1
2" into wall.
2x8 Ledger board shall be
pressure treated No. 2 Southern Pine or better
Foundation
Wall
Floor Joist
Existing band boardminimum 11
4" width
When using lag screws, gap between ledger
board and face of house band joist shall not exceed 1
2".
Gap between ledger board and face of
house band joist shall not exceed 1
2". (2)-1
2" dia. lag screws, bolts, or anchors
6" Max.
Double joists
hanger
Ledger board
FIGURE 14: FASTENER SPACING AND CLEARANCES AT LEDGER BOARD
PRINCE WILLIAM COUNTY, VIRGINIA TYPICAL RESIDENTIAL DECK DESIGNSHEET 11 OF 17
FIGURE 16: BUILT-UP BEAM DETAIL
FIGURE 15: RIM JOIST ATTACHMENT DETAIL
lag screws, bolts, or anchors, with washer,
Typical
(2)-1
2" lag screws, bolts, or anchors with washers at each end
2"
2"
2"
S/2 S
TABLE 2: FASTENER SPACING (S) FOR A RESIDENTIAL SOUTHERN PINE DECK LEDGER AND A 2-INCH NOMINAL SOLID-SAWN BAND JOIST [50 PSF TOTAL LOAD]
Joist Span (ft) 6' and less 6'-1" to 8' 8'-1" to 10' 10'-1" to 12'
On-Center Spacing of Fasteners
1
2"x4" Lag Screw 30 23 18 15
1
2" Bolt with
washers36 36 34 29
The maximum gap between the face of the ledger board and face of the house band joist shall be 1
2".
The tip of the lag screw shall be fully extended beyond the inside face of the band joist. Ledgers shall be flashed to prevent water from contacting the house band joist.
Lag screws and bolts shall be staggered as shown.
Deck ledger shall be 2x8 No. 2 Southern Pine (minimum), or other approved method and material as established by standard engineering practice.
S
10d nails or #10 wood screws, staggered in 2 rows
2 nails or
screws,
each end16"
Typical
Provide additional lag screws, bolts, or anchors with washers on each side of exterior terminations
that penetrate the band board
such as dryer vent caps and fresh air intakes.
rim joist
attach rim joist to end of
each joist with (5)-#10x3" Min. wood screws
joists
Exterior penetration (typical)
a
b
c
d
e
a,b
c
d,e
FIGURE 17: STAIRWAY REQUIREMENTS
PRINCE WILLIAM COUNTY, VIRGINIA TYPICAL RESIDENTIAL DECK DESIGNSHEET 12 OF 17
FIGURE 18: TREAD, RISER, AND STRINGER DETAIL
3
4"-11
4" nosing which shall not deviate from one
another by more than 3
8"
riser heights shall not deviate from one another
by more than 3
8"
treads:
2x material
risers:
1x material, Min.
risers may be open, but shall not allow
the passage of a 4" diameter sphere
grade
2x12 stair
stringer
4x4 post
1
2" diameter
thru-bolt and
washers,
Typical
stair
guardrail height measured
from
nosing of step
stringer: cut 2x12
triangular opening shall not permit the passage of a
6" dia. sphere
handrail shall return
to post at each end
handra
il he
ight:
34"-38"
from
nos
ing of step
frost depth
10"x10"x8" thick
stair footing
24"
34" M
in.
5'-0" Max. OC
guardrail spacing
81
4" Max.
9" Min.
5" Min.
11' Max. spancut stringer
3 stringers Min.
Opening shall not permit the
passage of a 43
8"
diameter sphere
tread depths shall not deviate from one another
by more than 3
8"
4x4 post
31.5" Min.
2x12 stringer @ 24" OC Max.
81
4" Max.
9" Min.
stringer: solid 2x12
tread ledger:2x4 attached to
stringer on each side
with (4)-10d nails or (4)-#8 wood screws
16' Max. spansolid stringer
risers may be open, but shall not allow the
passage of a 4" diameter sphere
36" Min.
FIGURE 19: INTERMEDIATE STAIRWAY LANDING FRAMING DETAILS
FIGURE 20: STAIRWAY LANDING DIMENSION DETAILS
PRINCE WILLIAM COUNTY, VIRGINIA TYPICAL RESIDENTIAL DECK DESIGNSHEET 13 OF 17
Dimensions shown are for both intermediate, and ground level landings.
stairway
36" Min.
width of stairwayMin.
stairwaylanding
direction of travel
upper stairway: connected to deck
(Figure 21, sheet 14)guardrail
post
landing outside
joist
1
2" diameter
thru-bolt
and washers,
Typical
landingdecking
Framing Plan
upper stringer
lower stringer:
bears on ground
landing
2x8 joist @
16" OC, Max.
rim joist
guardrail
post
double
joist
cut stringer to bear
on double rim joist
and landing decking,
secure to post with 1
2"
dia. thru-bolt and
washers
joist secured
with joist hanger
down
down
lower
stringer
Framing Cross Section
landing
decking
lower
stairway
upper stairway guardrail
post
1
2" dia. thru-
bolt and washers,
Typical
landing
joist
Framing Cross Section
rim joist and outside
joist secured with
(2)-1
2" dia. thru-bolts
and washers,
Typical
FIGURE 21: STAIRWAY CONNECTION TO DECK DETAILS
FIGURE 22: HANDRAIL DETAILS
PRINCE WILLIAM COUNTY, VIRGINIA TYPICAL RESIDENTIAL DECK DESIGNSHEET 14 OF 17
Handrails should be continuous from top riser to bottom riser.
4x4 guardrail
post
rim joist or
outside joist
stringer
(2)-1
2" diameter
thru-bolts and
washers each way,
Typical
sloped joist hanger
stringer
rim joist or
outside joist
Option 1: Stringer Connection with Thru-Bolts Option 2: Stringer Connection with Joist Hanger
riser heights shall not deviate from one another
by more than 3
8"
tread depths shall not deviate from one another
by more than 3
8"
9" Min.
81
4" Max.
Type I, Option 1For circular
handrails only
1 1
4"-2" outside
diameter
Type I, Option 2Non-circular handrails must
have a perimeter of 4" min. and 61
4" max. with a
maximum cross-section
dimension of 21
4"
Guardrail
Post
1 1
2"x11
2" spacerat 24" OC, Max.
handrail with
perimeter of 4"-61
4"
1 1
2"x11
2" spacerat 24" OC, Max.
handrail with
perimeter greater than 61
4"
Type II, Option 1
Handrails with a perimeter
greater than 61
4" shall provide a graspable finger recess area on both sides of the profile
finger recess detail
(2)-8d nails,Typical
Side Rail
Corrosion-resistant
handrail bracket
4'-0" OC Max.
1 1
2" Min.
3
4" Max.
7
8" Max.
3
8" Min.
1 34" Min.
5
16" Min.
1 1
4" Min. - 23
4" Max.
DO NOT DO'S
PRINCE WILLIAM COUNTY, VIRGINIA TYPICAL RESIDENTIAL DECK DESIGNSHEET 15 OF 17
Prohibited Post-to-Beam Connection
Prohibited Ledger Attachment:to open web trusses
Prohibited Ledger Attachment:to or thru brick veneer
Prohibited Ledger Attachment:to house overhang
PRINCE WILLIAM COUNTY, VIRGINIA TYPICAL RESIDENTIAL DECK DESIGNSHEET 16 OF 17
FIGURE 23: CLEARANCE FROM MECHANICAL AND ELECTRICAL INSTALLATION
·Contact the gas company for a courtesy inspection if: the distance from finished grade to bottom of joist is
less than 5'-0", a roof will be above the deck, or the deck will have a floor covering.·Normally the power company will not approve a meter location on or under a balcony, porch, carport, deck catwalk, or stairs. Contact power company for more information.·Gas fireplace terminations shall be 18" from the top of the outside termination to combustible materials and overhangs or per manufacturer's specifications.
Gas Meter
deck joist
Air Conditioning
condensing unit
finished grade
5'-0" or permanufacturer's
instruction
Meter
4'-0" M
in. 6
'-0" Max.
6" Min.
30"
Min.
42" M
in.
Front View Top View
6'-3"
from floor or ground OR
3'-0" ove
r equ
ip. Wh
ichever
is h
igher
Clear/Unobstructed space around meter
STAIRWAY ILLUMINATION FOR DECKS
The International Residential code (IRC) establishes the requirements for stairway illumination. This section includes stairways associated with decks. The following are a few of the ways to comply with the stairway
illumination requirements:
·Install an exterior light fixture within 5 feet of horizontal distance from the top landing of the stairway.
The light fixture must be positioned to illuminate both the top landing and the stairway.·Install an exterior 150 watt flood light fixture within 30 feet of horizontal distance from the top landing
of the stairway. The light fixture must be positioned to illuminate both the top landing and the stairway.·Install low voltage light fixtures that are approved for exterior use. A low voltage fixture must be installed at each step. Also, one fixture must be installed on the walkway within 3 feet of the bottom
step. Any wiring must be installed and secured in a safe manner. The low voltage lights may be
plugged into an exterior GFI electrical outlet with an In-Use Weatherproof Cover (NEMA 3R Rated) or hard wired into the electrical panel box in the house.·Other methods of complying with the illumination requirements, including justification and analysis shall be
submitted to the Building Construction Review Branch for approval prior to installation.
An electrical permit and inspection is required for the installation of the required illumination of the stairway. During the final inspection of the deck, the inspector will verify that the required stairway illumination has been
provided.
GLAZING ADJACENT TO STAIRWAYS
Glazing installed within 60 inches of the bottom of the stairways where the bottom edge is less than 60 inches above the walking surface shall be considered a hazardous location per the current edition of the IRC
and shall meet the safety glazing standards outlined in the IRC.
M
PRINCE WILLIAM COUNTY, VIRGINIA TYPICAL RESIDENTIAL DECK DESIGNSHEET 17 OF 17
REQUIRED INSPECTION AND SCHEDULING
1.Before you dig, call Miss Utility at 811 or 1-800-552-7001.2.Call for a footing inspection (102) before placing concrete.3.Call for a final inspection (151) when the deck is complete.4.If required, call for electrical permit and inspection (199).
·To schedule inspections, go online to www.pwcgov.org/eInspections or call the Automated Phone System at 703-792-6970.·No inspections shall be made unless an approved set of drawings are on site.
Important Phone Numbers ·Residential Plan Review
703-792-6939
·Building Construction Review703-792-6930
·Building Construction Services (Permitting)703-792-6924
·To Schedule Inspection call703-792-6970 or visit
www.pwcgov.org/eInspections·Inspection Office
(703)792-7006·Zoning Office
(703)792-6830
Hours
The Building Development Division reviews deck plans M-F from 8:00am To 11:00am.
Please arrive by 10:30 a.m. to have your plan reviewed that day.
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