REVIEWED BLD RESUB 1-BLD2024-0518-Ramp Details-7.11.2024ALUMINUM MODULAR RAMP 8c STAIR SYSTEM CONFIGURATION OPTIONS
TYPICAL COMPONENT SIZES
• LANDINGS: PLATFORM UNITS CAN BE BOLTED TOGETHER FOR LARGER PLATFORMS
• RAMPS: 48" WIDE UNITS CAN BE BOLTED TOGETHER TO FORM A MAXIMUM 30' RAMP RUN
• STAIRS: MAX. 6"-7" RISE x 12" TREAD x 48" WIDE
NOTE: WHERE DOOR CLEARANCE ALLOWS, STAIRS CAN BE ADDED TO ANY/ALL OF THE CONFIGURATIONS SHOWN BELOW.
❑ /� TYPICAL SINGLE DOOR CONFIGURATION
RAMP LENGTH VARIES; MAX. 30' RUN
0
I P55
in
5'-0"
❑ B TYPICAL SINGLE DOOR CONFIGURATION ❑ C TYPICAL DOUBLE DOOR CONFIGURATION
RAMP LENGTH VARIES; MAX. 30' RUN
P55 P55 P55
5'-0" 15'-0" 5'-0"
r r T �
NUMBER OF RISERS/TREADS VARIES
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5'-0"
❑ D TYPICAL TWO -BUILDING COMMON LANDING CONFIGURATION
RAMP LENGTH VARIES; MAX. 30' RUN
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�I P55 P55 P55 I I I ADDITIONAL DAMP OR STAIR
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5'-0" 5'-0" 5'-0"
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❑ G DOUBLE DOOR EXIT1/8" = 1'-0"
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in
10'
P55 P55
❑ ,J CUSTOM CONFIGURATION
D El
HHS1�"x1Y2"
"DIA. GRADE
DETAIL 3 5 ZINC
1�"x1�"x.125 AL. ANGLE
HOLD DOWN FOR TREAD.
BOLT AT MIDDLE AND ON
ENDS THROUGH
L-SHAPE. �" GRADE 5
BOLTS.
1:12 =SLOPE, TYP
SEE SECTION C�
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❑ E TYPICAL INTERMEDIATE LANDING CONFIGURATION
RAMP LENGTH VARIES; MAX. 30' RUN
O
5'-0"
❑ H ALTERNATE DOUBLE DOOR EXIT1/8" = 1'-0" ❑
HANDRAIL BOTH SIDE OF RAMP
PICKET
SUPPORT RAIL
r3 HOLES PER
I SUPPORT, TYP
(2) �" BOLTS.
SPACE 2" APART ON CENTER,
TYP OF ALL HANDRAIL ANCHORS.
TRT 16x16 ABS PAD UNDER
POST W/(1) SDS25112 THRU
(1) OF (2) HOLES IN POST
FOOT TO PAD
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I I I p55 P55 P55
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15'
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Welcome Ramp Systems, ins.
Component Aluminum Ramp System for
Safe, User -Friendly Building Access.
www. welcomerampsystems. com
❑ � TYPICAL SWITCHBACK CONFIGURATION
RAMP LENGTH VARIES; MAX. 30' RUN
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icy
DUMPSTER RAMP1/8" = 1'-0"
1-1/2"x12"x60" TRACTION TREAD PLANK (+32")
1-1/2"X12"X48" TRACTION TREAD PLANKS
36" OSHA RAIL ON RAMP
iC) P54 P54 R41 �
� 42" OSHA RAIL
E TYPICAL ELEVATION (WITH STANDARD RAID FOR 30-INCH OR LOWER
TOTAL PLATFORM HEIGHT.
SCALE: �"=1'-0"
SEE DETAIL 6 FOR
CONNECTION DETAIL
g' OR 10' LENGTH OF RAMP S=
/ 4'-11" FOR 10' RAMP SECTION
3'-11" FOR 8' RAMP SECTION
WELD EXTRUDED T-BAR SHAPE ON ENDS
OF EACH RAMP SECTION & LEG SLEEVES
- DETAIL E
USE (3) (GRADE 5) 1�" EQUAL SPACED
BOLTS WHEN JOINING RAMP SECTIONS
TOGETHER.
SCALE: �"=1'-0"
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SEE DETAIL 3 r7
FOR HANDHOLD
3"X1-1/2"X.125" AL.
PLATE W/TECH
SCREWS FOR
AL
5'X5'
v1/S.
3"X 1-1 /2"X.125" AL.
PLATE W/TECH
SCREWS FOR
ALIGNMENT ,
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0
5'-0"
❑ ,J 6'x15' W/STAIRS 8c RAMP1/8" = 1'-0"
- .
N
3-1/2" � 4x4xy4 PIER BASE
B
� W/ (2) 5/16"�
HOLES ®CORNERS
1�"x1�"x.120" SQ. TUBE CROSS
MEMBER IN MIDDLE OF EACH RAMP
SECTION. WELD TO LEG POCKETS AND
BOTTOM OF EXTRUDED L-BAR SHAPE.
NOTE: USE THIS RAILING
GUARDRAIL) FOR TOTAL PLATFORM
HEIGHT GREATER THAN
30-INCHES.
4 TREADS W/ 5 RISERS,
riri r� �irniry
30' RAMP I 15'
r' 'r' 'i
1�"x1�"x�" FILLER ANGLE.
PLACE ENDS UNDER TREAD
HOLDDOWN ANGLE TO SECURE
IN PLACE.
' � T-SHAPE
T-SHAPE EXTRUSION END
EXTRUSION PLATE
END PLATE
SECTION A
RAMP CONNECTION
1/�
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SECTION B
RAMP SUPPORT RAIL
SCALE: 3"=1'
(2) g"Qx 4" LAG BOLT, GALV. OR
SD5300 @EACH 5-FT PLATFORM
SECTION ADJACENT BUILDING
SCALE: 3"=1' 1/4" TRACTION
TREAD
TRACTION PLAN K
TREAD �
PLANK
N � �
N
1 �"
SECTION D
PLATFORM SUPPORT RAIL &
CONNECTION TO BUILDING
SCALE: 3"=1'
AL. VERY. HAND RAIL
1�"x1�"x.125 SQ.
12" LONG 1�"x1�"x.125" SQ.
TUBE INSERT. WELD TO
4"x4"x�" AL. BASE PLATE
"x2" AL. FLAT BAR THAT
CONNECTS RAMP STRINGERS
"x1�" AL. PLATE WELDED TO
EXTRUSION TO MAKE CONTINUOUS
L SHAPE
SECTION C
RAMP END TRANSITION END LEG
SCALE: 3"=1'
CODE COMPLIANCE
GENERAL NOTES:
1. IBC 2021, CHAPTERS 10 & 1 1 COMPLIANT
1. THESE PLANS AND SPECIFICATIONS ARE NOT VALID FOR ANY OTHER ASSEMBLY THAN
2. RISK FACTORS I & II
PRODUCTS PRODUCED BY WELCOME RAMP SYSTEMS. INC. PRODUCTS PRODUCED THE
3. RAMP SLOPE, MAX.RISE = 1:12 (VERY/HORZ)
STANDARDS SET FORTH IN THESE DRAWINGS AND ACCOMPANYING DESIGN.
[30" MAX. RISE EACH RAMP RUN BETWEEN
2. THE RAMP SYSTEM, STAIRS AND PLATFORM HAVE BEEN DESIGNED TO MEET IBC
PLATFORMS]
REQUIREMENTS. THE VERTICAL DESIGN LOADING CRITERIA IS 100 PSF UNIFORM LIVE LOAD
4. CROSS SLOPE, MAX. = 2%
AND 300# LIVE OR DEAD CONCENTRATED LOAD. USES FOR LOADS IN EXCESS OF THOSE
5. STAIR RISE = 7" MAX., 4" MIN.
STATED ABOVE REQUIRE REDESIGN BY WELCOME RAMP SYSTEMS. INC.
6. DESIGN LOADING:
3. RAMP DESIGN LIMITS: THE SLOPE SHALL BE 1:12. THE MAXIMUM CROSS SLOPE SHALL
6.1. DECK/RAMP 100 PSF / 300# CONC.
BE LESS THAN 2%. THE MAXIMUM RUN SHALL BE 30'. THE MAXIMUM HEIGHT WITHOUT
6.2. STAIR TREAD 300 LBS./TREAD
ADDITIONAL ENGINEERING JUSTIFICATION SHALL BE 48" FROM THE PLATFORM TO FINISHED
6.3. RAILING 50 PLF/200 LBS. CONC.
GRADE.
6.4. LATERAL LOAD 600# PEDESTRIAN DYNAMIC
4. WELCOME RAMPS, PLATFORMS, AND STAIRS ARE DESIGNED TO BE FREE STANDING.
LOADING PER 30-FT RAMP
5. DETAILS SHOW MOST USED HEIGHTS, OTHER HEIGHTS ARE SIMILAR.
6.5. WIND LOAD 135 MPH, EXP C, Kzt=1.0
6.6. SEISMIC LOAD Sds=1.0, SEISMIC CAT. 'D'
MATERIAL SPECIFICATIONS
7. DOOR CLEARANCE AS REQUIRED BY IBC.
PLANKING:
8. STANDARD 3 LINE RAIL FOR COMPONENTS 30"
THIS DESIGN IS LIMITED TO GALVANIZED METAL PLANKING MATERIALS.
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OR LESS FROM GRADE TO WALKING SURFACE
RAMP: ALL PLANKING SHALL BE 13 GA. 12"W x 1 1/2" DEEP.
OF RAMP, LANDING, OR STAIR.
PLATFORM: ALL PLANKING SHALL BE 13 GA. 12" W x 1-1/2" D. SEE PLAN FOR
9. 48" WIDE STAIR CLEARANCE.
LENGTH.
10. 42" VERTICAL PICKET GUARDRAIL FOR
STAIRS: ALL PLANKING SHALL BE 11 GA. 12"W x 2" DEEP.
COMPONENTS OVER 30" FROM GRADE TO
LEGS:
WALKING SURFACE OF RAMP, LANDING, OR
LEVELING FEET ASSUMED TO BE PLACED ON SUITABLE FIRM BEARING GROUND.
STAIR.
LEG MATERIAL SHALL BE 1-1/2" SQ.X .120" AL.TUBING.
1 1 . GRASPABLE CONTINUOUS HANDRAIL AT 36" OFF
LEG POCKETS SHALL BE 1 .781 " SQ X .125" AL. TUBING.
RAMP, PLATFORM, OR STAIR NOSING. INSTALL
ADJUSTING BOLT - 3/8" X 2-1/4" GRADE 5 CAP SCREW W/NYLON LOCK NUT, ZINC
BOTH SIDES OF STAIRS AND RAMP.
PLATED
RENEVPS 9 27 2025
12. HANDRAILS TO EXTEND 12" HORIZONTALLY OVER
ALUMINUM:
WALKING SURFACE AND RETURN TO WALL OR
THE 1-1/2" AL. HANDRAIL SHALL BE 6063-T5 WITH A YIELD STRESS OF 16 KSI.
RAIL COLUMN.
ALL OTHER ALUMINUM PARTS SHALL BE 6061-T6 ALUMINUM WITH A YIELD STRESS OF
13. RAMP AND RAILINGS TO HAVE CURBS WHICH DO
35 KSI.
NOT ALLOW PASSAGE OF 4" SPHERE WHERE
HAND RAILS:
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ORIGINAL POSITION OF SPHERE IS WITHIN 4" OF
STAIRS AND RAMPS: USE 1-1/2" SQ. X 5/32" THICK WALLED TUBING FOR POSTS AND
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THE WALKING SURFACE.
HORIZONTAL RAILS EXCEPT THE TOP 1-1/2" ROUND HAND RAIL.
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14. FOOTING INFORMATION:
STANDARD HANDRAIL (W/0 PICKETS) IS ALLOWED ON FINISHED PLATFORM HEIGHTS OF
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12"x12"x1-1/2" P.T. WOOD OR 12"x12"
30" AND LESS. ALL PLATFORM HEIGHTS ABOVE 30" SHALL USE PICKET STYLE
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PRE-MANUFACTURED ABS PAD REQUIRED UNDER
HANDRAILS.
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ALL ADJUSTABLE LEGS.
• PLATFORM: USE 1-1/2 SQ. X 5/32" THICK WALLED TUBING FOR POSTS AND ALL
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HORIZONTAL RAILS.
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• HEIGHT: TOP OF GRIPPING SURFACES OF HANDRAILS SHALL BE 36 INCHES VERTICALLY
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ABOVE WALKING SURFACES.
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WELDING:
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• ALL REFERENCES TO WELDING ON PLAN SET REFER TO IN -PLANT FABRICATION. NO
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ON -SITE WELDING IS REQUIRED.
• FABRICATION PLANT WELDING BY WELDERS CERTIFIED BY A THIRD PARTY INSPECTOR AND
IN ACCORDANCE WITH ANSI/AWS D1.2 CODE.
• WELD SIZES ARE EQUAL OR LARGER THAN THE ELEMENT BEING WELDED.
• WELDING IS ALL AROUND UNLESS OTHERWISE NOTED. CARE IS TAKEN TO AVOID EXCESS
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WARPING OF WELDED ELEMENTS.
• FABRICATOR TO CERTIFY ASSEMBLED PART ARE PER THE DRAWINGS PER IBC 1704.2.2.
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BOLTS:
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• ALL BOLTS SHALL BE GRADE 5 ZINC PLATED, UNLESS OTHERWISE SPECIFIED. PROVIDE
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LOCKING WASHERS UNDER ALL NUTS AND ANCHOR BOLTS UNLESS OTHERWISE
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SPECIFIED.
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• HIGH STRENGTH BOLTS ARE DESIGNED AT LESS THAN 50% CAPACITY FOR ADDITIONAL
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FACTOR OF SAFETY AND DO NOT REQUIRE SPECIAL INSPECTION.
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TECH SCREWS:
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• ZINC PLATED #10x1�", SELF TAPPING.
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PLATFORM
INSTALL BOLT WITH 1"
MIN. CLEAR IN
STRINGER PLATE
AROUND HOLE. (TYP.)
2" x 2" x 3/16"
RECEIVER TUBE
5" LONG (TYP.)
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PLATFORM
INSTALL BOLT WITH 1"
MIN. CLEAR IN
STRINGER PLATE
AROUND HOLE. (TYP.) �
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2" x 2" x 3/16"
RECEIVER TUBE �
5" LONG (TYP.) O
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(3) 1/2"b BOLTS
y4" NOSING RADIUS,
EQUALLY SPACED THRU
TOP & BOTTOM
1/4" X 7" STAIR END
ALUMINUM PLATE
(4) 3/8" BOLTS, TYP. PER
INTOPLATFORM.
TREAD
PLATFORM
TREADS PER STAIR PLAN
0'-9"
HEIGHT VARIES
11" RUN
16 GA. X
1
47-15/16"
AL. STAIR
FLAT GALV.
PLANK,
STEEL, TYP.
2"x12"x51"
1/4" x 8" ALUM.
PLATE CARRIAGE
4"-7" R
SEE DETAIL 5
7" RISE
LEVELING FOOT
2 STAIRWAY ELEVATION
SCALE: 1 /2"=1 '
42" VERTICAL PICKET GUARDRAIL
w/BALLASTS TO PREVENT A 4"
SPHERE FROM PASSING THROUGH
WHEN OVER 30" ELEVATION, BOTH
SIDES OF STAIR.
0
23"
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LSTAIR PLANK, 1/4" MARGIN, TYP.
2" X 12" X
48"
DETAIL 1 -STAIR HAND RAIL 1-1/2" AL. ANGLE,
SCALE: 1/2"=1' 3/16" THICK STAIR
TREAD STIFFENER
HANDRAIL BOTH
SIDE OF STAIR
23"
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1/4" MARGIN, TYP.
STAIR PLANK
2"x12"x51"
DETAIL 4 -STAIR HAND RAIL 1-1/2" AL. ANGLE,
SCALE: 1/2"=1' 3/16" THICK STAIR
TREAD STIFFENER
12"
0' -1 1 /2"
HAN DRAT L
CONNECTION,
DETAIL 6
4"LONG X 1-3/4"
X 1-3/4" X 0.25"
AL. ANGLE WITH (2)
3/8" TACK SCREWS
INTO POST. WELD
HANDRAIL TO ANGLE
ALL AROUND.
DETAIL 3
HANDHOLD
SCALE: 1/2"=1'
1�'I
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3/4"
THREADED
ADJUSTMENT
4" SQ. TYP.
DETAIL 5
LEVELING FOOT
SCALE: 3"=1'
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4" HANDRAIL TIE
DETAIL 6
HANDRAIL CONNECTION
SCALE: 3"=1'