1. business and industrial
2. construction

Prince William County
TypicalTypical
Residential
Deck Design
Deck Details
Based Based
on theon
Virginia
Statewide
Building
~ Version
2011-01-01
Virginia Uniform
Uniform Statewide
Building
CodeCode
~ Version
2009-10-01
CONTENTS
General Notes........................................................ 2 Ledger
Fasteners................................................... 11
Deck Framing Plan................................................ 3 Rim Joist Attachment............................................ 11
Cross Section of Deck Connected to House....... 4 Built-Up Beam...................................................... 11
Free Standing Deck Framing Plan........................ 5 Stairway Requirements.......................................... 12
Cross Section of Free Standing Deck.................. 6 Tread, Riser, and Stringer Detail......................... 12
Lateral Support of Free Standing Deck............... 7 Stairway Landing Details....................................... 13
Framing Plan at Chimney or Bay Window........... 8 Stairway Connection to Deck................................ 14
Post-to-Beam Connection.................................... 8 Handrail Details..................................................... 14
Joist-to-Beam Connection................................... 8 Do Not Do's...........................................................15
Footing Details....................................................... 9 Stairway Illumination.............................................. 16
Guardrail Post Connection..................................... 9 Clearances............................................................. 16
Ledger Board Connection...................................... 10 Inspection and Scheduling.................................... 17
TYPICAL RESIDENTIAL DECK DESIGN
PRINCE WILLIAM COUNTY, VIRGINIA
Department of Development Services
Building Development Division
5 County Complex Court
Prince William, VA 22192-9201
703-792-6930
SHEET 1 OF 17
GENERAL NOTES
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.
metal connections, bolts, joist hangers, etc. shall be galvanized or corrosive resistant.
·
All
·
·
Building
All lumber shall be pressure treated Southern Pine, grade #2 or better.
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.
structural members.
Smaller decks may be constructed utilizing the same
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:
·
Component
Requirement
Nails, screws, lag screws, and
hot-dipped zinc galvanized, stainless steel, or
approved for use with ACQ, CA, or CA-B
Hardware (joist hangers, anchors,
clips and angles) shall be
hot-dipped galvanized with a 1.85 oz/sf of
zinc (G-185 coating) or
Stainless Steel (type 304 or better)
bolts shall be
1
·
1
·
·
Examples
"Zmax"
"Triple
from Simpson Strong-Tie
Zinc" from USP
Flashing shall be
copper, stainless steel, silicon, bronze, or
UV-resistant plastic , and hot-dipped galvanized
steel with a G30 zinc coating
Notes: In all cases, electroplated galvanizing is NOT acceptable.
ICC Evaluation Report and testing data are required to substantiate decay
resistance of plastic.
2
1
2
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.
·
PRINCE WILLIAM COUNTY, VIRGINIA
TYPICAL RESIDENTIAL DECK DESIGN
SHEET 2 OF 17
PRINCE WILLIAM COUNTY, VIRGINIA
5' Max.
sheet 14
Figure 22,
Handrail:
Stairway:
Figure 17,
sheet 12
GP
Intermediate Landing:
Figure 19 and 20, sheet 13
5' Max.
GP
Typical
of house
GP
Attachment:
Figure 15, sheet 11
Typical
2' Max.
Guardrail Post 4x4 (treated)
Figure 16, sheet 11
Typical
TP
(2)-2x10 Beam:
TP Treated Post 6x6
GP
Rim Joist:
8' Max.
2' Max.
Guardrail Post Connection:
Figure 10, sheet 9
Figure 7, sheet 8
Typical
TP
Typical
(2)-2x8
Double Joist:
Ledger Connection:
Figure 11 or 12, sheet 10
AND Figure 14, sheet 11
6x6 Post:
8' Max.
Ground Landing:
Figure 20, sheet 13
TP
Chimney or
Bay Window:
Figure 6, sheet 8
Figure 13, Sheet 10
Double Joist
Joist:
2x8 @ 16" OC
Exterior wall
(refer to sheet 5 for free standing deck)
the wall, or cantilever.
system (without at least 141 " solid band board), brick veneer, stone or cultured stone on
4x4 Rail Post
sheet 8
Table 1
Decking:
GP
FIGURE 1: DECK FRAMING PLAN
Exterior house condition shall not contain any of the following: prefabricated floor joist
Spacing 10' Max. 4' Min.
TYPICAL RESIDENTIAL DECK DESIGN
SHEET 3 OF 17
Top Rail
FIGURE 2A: CROSS SECTION OF DECK CONNECTED TO HOUSE
2x4 Min. or
(refer to sheet 6 for free standing deck)
GP
4x4 post
5
4
board
5'-0" OC Max.
shall NOT
2x2 Min. Pickets shall
Side Rail
be attached to side rails
2x4 Min.
by one of the following
methods:
be notched
36" Min.
A. (1)-#8 screw top
and bottom
B. (2)-8d spiral nails
top and bottom
rim joist
11' Max.
Openings shall not
allow the passage
of a 4" diameter
2' Max.
(2)-2x10 Beam:
12, sheet 10
14, sheet 11
TP 6x6 Post
24" Min.
Connection:
Figure 11 or
AND Figure
Figure 16, sheet 11
finished
grade
sphere
Ledger
Footing:
Figure 9, sheet 9
12' max.
FIGURE 2B: CROSS SECTION OF DECK CONNECTED TO HOUSE
(refer to sheet 6 for free standing deck)
Stairway Requirements:
Figure 17, sheet 12
Intermediate Landing:
Figure 19 and 20,
sheet 13
Joist-To-Beam:
Stairway
Connection:
Figure 21,
sheet 14
finished
grade
Stringer Detail:
Figure 18, sheet 12
PRINCE WILLIAM COUNTY, VIRGINIA
Ledger
Figure 8, sheet 8
Guardrail Post
Connection:
Post-To-Beam:
Connection:
Figure 7, sheet 8
Figure 11 or
Figure 10, sheet 9
12, sheet 10
AND Figure
14, sheet 11
TYPICAL RESIDENTIAL DECK DESIGN
SHEET 4 OF 17
PRINCE WILLIAM COUNTY, VIRGINIA
sheet 14
Figure 22,
Handrail:
sheet 12
Stairway:
Figure 17,
GP
4x4 Rail Post
sheet 8
Table 1
Decking:
GP
GP
5' Max.
Intermediate Landing:
Figure 19 and 20, sheet 13
wall, or cantilever.
GP
Figure 15, sheet 11
Typical
2' Max.
2' Max.
2' Max.
Guardrail Post 4x4 (treated)
Figure 16, sheet 11
Typical
TP
(2)-2x10 Beam:
TP Treated Post 6x6
GP
Rim Joist:
8' Max.
Figure 7, sheet 8
Typical
TP
Guardrail Post Connection:
Figure 10, sheet 9
Typical
Joist:
Required Bridging
at each guardrail
post
2x8 @ 16" OC
6x6 Post:
8' Max.
Ground Landing:
Figure 20, sheet 13
TP
Figure 16, sheet 11
Typical
(2)-2x10 Beam:
floor joist system (without at least 141 " solid band board), brick veneer, stone or cultured stone on the
Deck shall be free standing when adjacent house condition contains any of the following: prefabricated
FIGURE 3: FREE STANDING DECK FRAMING PLAN
8' Max. 4' Min.
5' Max.
TYPICAL RESIDENTIAL DECK DESIGN
SHEET 5 OF 17
FIGURE 4A: CROSS SECTION OF FREE STANDING DECK
Top Rail
Deck shall not be anchored to face of house
2x6 or
GP
4x4 post
board
2x2 Min. Pickets shall be
attached to rails by one
of the following methods:
Side Rail
5'-0" OC Max.
shall NOT
5
4
2x4 Min.
A. (1)-#8 screw top and
be notched
bottom
36" Min.
B. (2)-8d spiral nails top
and bottom
Openings shall not
allow the passage of
(2)-2x10 Beam:
a 4" diameter
Figure 16, sheet 11
2' Max.
24" Min.
grade
14' Max. w/bracing
6' Max. w/o bracing
finished
Bracing:
Figure 5, sheet 7
rim joist
8' Max.
sphere
2' Max.
TP 6x6 Post
Footing:
Figure 9, sheet 9
FIGURE 4B: CROSS SECTION OF FREE STANDING DECK
Deck shall not be anchored to face of house
Stairway Requirements:
Figure 17, sheet 12
Intermediate Landing:
Figure 19 and 20,
sheet 13
Joist-To-Beam:
Stairway
Connection:
Figure 21,
sheet 14
finished
grade
Figure 8, sheet 8
Post-To-Beam:
Figure 7, sheet 8
Guardrail Post
Connection:
Figure 10,
sheet 9
Stringer Detail:
Figure 18, sheet 12
PRINCE WILLIAM COUNTY, VIRGINIA
TYPICAL RESIDENTIAL DECK DESIGN
SHEET 6 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.
Decking
Joist
6x6 Post
(2)-2x10 Beam
Rim Joist
(when required)
4x4 Rail Post
Required bridging
at each guardrail
post
2x6 Diagonal Bracing
(or 2x4 minimum for
bracing parallel to beam)
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.
FIGURE 5B: LATERAL SUPPORT FOR ALL DECKS
Knee bracing shall be provided when deck height is greater than 8'-0" above grade.
2'
Beam
2'
2x4,
Typical
finished grade
(1)-21 "
dia.
thru-bolt with
washers,
Typical
Bracing Parallel to Beam
PRINCE WILLIAM COUNTY, VIRGINIA
14' Max.
2'
Beam
2'
use 2x8
blocking when
joist and post
do not allign
when joist
and post
are
alligned
Bracing Perpandicular to Beam
TYPICAL RESIDENTIAL DECK DESIGN
SHEET 7 OF 17
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 " solid band board), brick veneer, stone or cultured stone on the wall, or cantilever.
4
(refer to sheet 5 for free standing deck)
6' Max.
2" Min.
Deck Joists
Ledger Board
3' Max.
Chimney or
Bay Window
Decking
Double Joists and
Joist hangers required
Double Headers
at intersections
FIGURE 7: POST-TO-BEAM CONNECTION
TABLE 1: DECKING
(2)-2x10
Beam
1
2
Thickness of
" diameter
Diagonal Decking
thru-bolt and
Joist
washers,
Typical
6x6 Post
notch post to
match beam
FIGURE 8: JOIST-TO-BEAM CONNECTIONS
1
2
Composite
Spacing
2x
16" OC
YES
YES
NO
12" OC
YES
YES
YES
5
x
4
Material
2
Treated Southern Yellow Pine #2 or better
®
Trex or similar, must be rated to support
40 PSF or 200 pound concentrated load
hurricane tie
(3)-8d toe nailed
(2 on one side,
1 on the other)
1
joist hanger
or similar
top of joist and
beam must be at
the same level
(2)-2x10 beam
OPTION 1
PRINCE WILLIAM COUNTY, VIRGINIA
OPTION 2
OPTION 3
TYPICAL RESIDENTIAL DECK DESIGN
SHEET 8 OF 17
FIGURE 9: FOOTING DETAILS
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
·
All
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.
provide seal to prevent
seapage of water
post anchor
finished
8" Min.
24" Min.
grade
frost
depth
undisturbed
8" Min.
8" Min.
post anchor
pre-manufactured
cast-in-place post
18" square OR
soil
20" dia. round
anchor
Option 1
Option 2
Option 3
FIGURE 10: GUARDRAIL POST CONNECTION DETAIL
guardrail post
guard post
hold-down anchor
outside
joist
(optional) w/21 "
hold-down
rim joist
anchor
(optional)
rim joist
dia.
hold-down anchor
thru-bolts and
(optional) w/21 "
washers
dia.
joist
PLAN
thru-bolts and
(at joist)
washers
rim joist
joist
hold-down
anchor
1
2
outside joist
" dia.
thru-bolt
and washers,
Typical
1
2
" dia.
thru-bolt and
2x8 blocking
End nail w/10d nails top
and bottom, each side
washers,
Typical
attach per
rim joist details
(optional)
(if hold-down
is not used)
joist
(if hold-down is not used)
SECTION
PLAN
SECTION
PLAN
(between joists)
Guardrail Post to Outside Joist
PRINCE WILLIAM COUNTY, VIRGINIA
Guardrail Post to Rim Joist
TYPICAL RESIDENTIAL DECK DESIGN
SHEET 9 OF 17
FIGURE 11: LEDGER BOARD CONNECTION TO DIMENSIONAL BAND BOARD
When using lag screws, gap between ledger
board and face of house band joist shall not
exceed
1
2
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
Floor Joist
recommendations.
Decking
Existing band board
minimum 11 " width
4
Foundation
2x8 Deck Joist @ 16" OC,
Typical
Wall
" diameter bolts and washers, OR 21 "
diameter lag screws where the tip of the
lag screws shall fully extend beyond the
inside face of the band joist.
1
2
2x8 ledger board shall be
pressure treated No. 2
Southern Pine or better
FIGURE 12: LEDGER BOARD CONNECTION TO FOUNDATION WALL
FIGURE 13: DOUBLE JOIST ATTACHMENT
TO LEDGER BOARD
Gap between ledger board and face of
1
house band joist shall not exceed 2 ".
(2)-21 " dia. lag screws,
bolts, or anchors
Exterior wood framed
Floor Joist
house wall
Double joists
hanger
Flashing to protect
ledger board
Existing band board
minimum 11 " width
4
Decking
6" Max.
Ledger board
Foundation
Wall
2x8 Deck Joist @ 16" OC,
Typical
If concrete wall, use
2x8 Ledger board shall be
pressure treated No. 2
Southern Pine or better
1
2
" diameter expansion
anchors, embeded 3" into wall.
If hollow masonry wall, use 2 " diameter epoxy
1
anchors or equal, embedded 32 " into wall.
PRINCE WILLIAM COUNTY, VIRGINIA
1
TYPICAL RESIDENTIAL DECK DESIGN
SHEET 10 OF 17
FIGURE 14: FASTENER SPACING AND CLEARANCES AT LEDGER BOARD
Provide additional lag screws,
lag screws, bolts, or
bolts, or anchors with washers on
anchors, with washer,
each side of exterior terminations
Typical
S/2
that penetrate the band board
such as dryer vent caps and
S
fresh air intakes.
2"
2"
2"
S
Exterior penetration (typical)
(2)- " lag screws, bolts, or anchors with washers at each end
1
2
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]
c
Joist Span (ft)
6' and less
6'-1" to 8'
8'-1" to 10'
On-Center Spacing of Fasteners
1
2
"x4" Lag Screw
1
2
a
b
c
d
e
a,b
" Bolt with
washers
10'-1" to 12'
d,e
30
23
18
15
36
36
34
29
1
The maximum gap between the face of the ledger board and face of the house band joist shall be 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.
FIGURE 15: RIM JOIST ATTACHMENT DETAIL
joists
attach rim joist to end of
each joist with (5)-#10x3" Min.
wood screws
rim joist
FIGURE 16: BUILT-UP BEAM DETAIL
10d nails or #10 wood screws,
staggered in 2 rows
2 nails or
screws,
16"
each end
Typical
PRINCE WILLIAM COUNTY, VIRGINIA
TYPICAL RESIDENTIAL DECK DESIGN
SHEET 11 OF 17
FIGURE 17: STAIRWAY REQUIREMENTS
handrail shall return
34"-38" from
to post at each end
5'-0" Max. OC
nosing of step
handrail height:
31.5" Min.
guardrail spacing
Opening shall not
permit the
3
passage of a 48 "
diameter sphere
1
2
4x4 post
" diameter
thru-bolt and
stair
Typical
guardrail
height
34" Min.
washers,
2x12 stair
stringer
4x4 post
triangular opening
shall not permit
the passage of a
36" Min.
measured
from
nosing of
step
6" dia. sphere
grade
10"x10"x8" thick
2x12 stringer
24"
stair footing
@ 24" OC Max.
frost depth
FIGURE 18: TREAD, RISER, AND STRINGER DETAIL
risers may be open, but
shall not allow the
risers may be open, but shall not allow
passage of a 4"
the passage of a 4" diameter sphere
9" Min.
diameter sphere
9" Min.
tread depths shall not
deviate from one another
stringer:
3
by more than 8 "
5" Min.
stringer:
8 1 " Max.
cut 2x12
4
risers:
1x material, Min.
riser heights shall not
deviate from one another
3
by more than 8 "
treads:
3
4
2x material
11' Max. span
cut stringer
3 stringers Min.
solid 2x12
"-141 "
4
2x4 attached to
stringer on each side
nosing which shall
not deviate from one
3
another by more than 8 "
PRINCE WILLIAM COUNTY, VIRGINIA
8 1 " Max.
tread ledger:
with (4)-10d nails or
(4)-#8 wood screws
16' Max. span
solid stringer
TYPICAL RESIDENTIAL DECK DESIGN
SHEET 12 OF 17
FIGURE 19: INTERMEDIATE STAIRWAY LANDING FRAMING DETAILS
2x8 joist @
16" OC, Max.
joist secured
with joist hanger
rim joist
double
joist
upper stringer
guardrail
post
down
rim joist and outside
joist secured with
down
lower stringer:
bears on ground
landing
(2)-21 "
Typical
Framing Plan
upper stairway:
upper stairway
connected to deck
lower
landing
stairway
outside
joist
1
2
guardrail
post
(Figure 21, sheet 14)
guardrail
post
landing
decking
dia. thru-bolts
and washers,
landing
decking
cut stringer to bear
on double rim joist
and landing decking,
1
secure to post with 2 "
" diameter
thru-bolt
and washers,
lower
Typical
stringer
landing
joist
dia. thru-bolt and
washers
Framing Cross Section
1
2
" dia. thru-
bolt and washers,
Typical
Framing Cross Section
FIGURE 20: STAIRWAY LANDING DIMENSION DETAILS
Dimensions shown are for both intermediate, and ground level landings.
36" Min.
stairway
direction of travel
width of stairway
Min.
stairway
landing
PRINCE WILLIAM COUNTY, VIRGINIA
TYPICAL RESIDENTIAL DECK DESIGN
SHEET 13 OF 17
FIGURE 21: STAIRWAY CONNECTION TO DECK DETAILS
(2)-21 "
diameter
tread depths shall not
4x4 guardrail
post
thru-bolts and
washers each way,
Typical
rim joist or
outside joist
deviate from one another
by more than "
3
8
9" Min.
riser heights shall not
deviate from one another
3
by more than 8 "
8 1 " Max.
4
sloped joist hanger
rim joist or
outside joist
stringer
stringer
Option 1: Stringer Connection with Thru-Bolts
Option 2: Stringer Connection with Joist Hanger
FIGURE 22: HANDRAIL DETAILS
Handrails should be continuous from top riser to bottom riser.
1 1 " Min.
2
11
4
1 1 "x11 "
2
"-2" outside
2
spacer
at 24" OC, Max.
diameter
Guardrail
Corrosion-resistant
Post
handrail bracket
4'-0" OC Max.
Side Rail
(2)-8d nails,
handrail with
Typical
perimeter of
Type I, Option 1
4"-641 "
Type I, Option 2
For circular
Non-circular handrails must
have a perimeter of 4"
handrails only
min. and 61 " max. with a
4
1 1 "x11 "
2
2
spacer
at 24" OC, Max.
maximum cross-section
dimension of 21 "
4
1 1 " Min. - 23 " Max.
4
4
3
4
" Max.
handrail with
perimeter greater
Type II, Option 1
Handrails with a perimeter
1
greater than 64 " shall provide
a graspable finger recess area
on both sides of the profile
than 61 "
5
16
" Min.
4
PRINCE WILLIAM COUNTY, VIRGINIA
7
8
3
" Max. 1 4 " Min.
3
8
" Min.
finger recess detail
TYPICAL RESIDENTIAL DECK DESIGN
SHEET 14 OF 17
DO NOT DO'S
Prohibited Post-to-Beam Connection
Prohibited Ledger Attachment:
to open web trusses
Prohibited Ledger Attachment:
to or thru brick veneer
PRINCE WILLIAM COUNTY, VIRGINIA
Prohibited Ledger Attachment:
to house overhang
TYPICAL RESIDENTIAL DECK DESIGN
SHEET 15 OF 17
STAIRWAY ILLUMINATION FOR DECKS
The International Residential code (IRC) establishes the requirements for stairway illumination.
includes stairways associated with decks.
illumination requirements:
This section
The following are a few of the ways to comply with the stairway
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.
FIGURE 23: CLEARANCE FROM MECHANICAL AND ELECTRICAL INSTALLATION
Clear/Unobstructed
space around meter
deck joist
Top View
Meter
M
Air Conditioning
condensing unit
Gas Meter
4'-0" Min. 6'-0" Max.
instruction
finished grade
·
Contact
6" Min.
30"
Min.
42" Min.
5'-0" or per
manufacturer's
6'-3" from floor or ground OR
3'-0" over equip. Whichever is higher
Front View
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.
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.
·
Normally
Gas fireplace terminations shall be 18" from the top of the outside termination to combustible materials and
overhangs or per manufacturer's specifications.
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PRINCE WILLIAM COUNTY, VIRGINIA
TYPICAL RESIDENTIAL DECK DESIGN
SHEET 16 OF 17
REQUIRED INSPECTION AND SCHEDULING
1. Before
2. Call
you dig, call Miss Utility at 811 or 1-800-552-7001.
for a footing inspection (102) before placing concrete.
for a final inspection (151) when the deck is complete.
4. If required, call for electrical permit and inspection (199).
3. Call
To schedule inspections, go online to www.pwcgov.org/eInspections or call the
·
·
No
Automated Phone System at 703-792-6970.
inspections shall be made unless an approved set of drawings are on site.
Important Phone Numbers
·
Residential Plan Review
703-792-6939
·
Building
Construction Review
703-792-6930
·
Building Construction Services (Permitting)
703-792-6924
·
To
Schedule Inspection call
703-792-6970 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.
PRINCE WILLIAM COUNTY, VIRGINIA
TYPICAL RESIDENTIAL DECK DESIGN
SHEET 17 OF 17