Stadium Chairs. Table of Contents. Products for Construction and Expansion Joints. Products for ADA Compliance

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1 Table of Contents Products for Construction and Expansion Joints Products for ADA Compliance Floor and Riser Design Requirements/ Guidelines Chair Sizing Chart Row Spacing Chart Sightline Formula Profile Drawings *All metric conversions are centimeters and are listed in ( ).

2 Construction and Expansion Joints The size and placement of Construction and Expansion Joints are critical components to the design and cost of a seating installation. The following descriptions of these joints are taken from The Architectural Graphics Standard. Expansion (Isolation) Joints: These allow movement between the concrete slab and fixed parts of the building such as columns or walls. Construction Joints: These joints provide stopping places during the floor construction. These elements must be taken into consideration in order to have a successful seating layout. Each of these joints has a significant impact on the particular cost and design for installation. Horizontal Construction Joints: These joints are in the concrete riser and are a concern with riser mount chairs. The concrete is usually pre-cast (but not always). The location of the joint or the height of the riser from the deck to the joint are the critical dimensions. When working on a job with this type of joint, the riser height and the location of rebar have cost implications. Special anchors may be required. (Note: Our cast iron riser mount standards come in 3 sizes to accommodate a low, mid and high rise situation. Due to cost of materials, the low rise standard is the most expensive and thehigh rise standard is the least expensive.) Details of this joint are critical at time of pricing! Hussey Seating uses an offset plate to anchor the chairs without altering the seating plan. The offset plate offsets the anchors enough to clear the joint. There is the possibility that if one chair is offset, all chairs in that row may be offset. Vertical Construction Joints: There are several options available to accommodate joints that span a deck of seating. The most cost effective method is with a carrier plate. Usually only one chair is affected by this anchoring method. This permits movement of the building without damaging the chairs.

3 Products for ADA Compliance offers several responses to the requirements for handicap accessibility and seating. Flip-Up Armrests: This adaptation is designed to eliminate a barrier for disabled patrons. The armrest is actually hinged near the rear to swing up and become parallel with the back. Each chair with a Flip-Up Armrest is denoted by the universal handicap symbol for identification purposes. This option is available on all three plastic chairs models. It is not available on the Sentinel automate or semi-automate. A removable armrest is a similar option, which is available on the (steel) Olympiad. Armless Chairs: Some of our chairs do not accommodate the modifications listed here as well as others. To comply with the requirements of ADA and to meet the needs of handicap patrons, some chairs are available without armrests. This option is available on all three plastic chair models. Swing Away Companion Chair This chair is a single, fixed chair that rotates 90 degrees from the ambulatory spectator position to allow for a patron seated in a wheelchair. Essentially, the fixed chair swings away to provide room for the wheelchair. There is a lock mechanism, which locks the chair in both the fore and aft positions. Presently, this option is not available with the Medallion.

4 Floor & Riser Design Requirements/Guidelines General Design Notes: All floor, slabs and Risers constructed of concrete (pre-cast or poured) must meet the following criteria: All concrete must have a minimum strength of 3000 P.S.I. or 20,684 N/M Sq. for proper anchor attachment. All floors constructed of wood must be 1 ½" (3) thick minimum. All anchors are supplied by unless otherwise noted. If anchors are to be supplied by someone other that, notification must be made during the submittal process. Hardware and Drill Hole Requirements: The minimum radius of 25 (762) is the primary limitation for a radius project. A smaller radius will require the use of individual chairs. ADA - American Disabilities Act: Maximum length of a sloped floor is 30" (914) after which there must be a level of 5" (152)

5 Chair Sizing The chart assists in determining the chair sizes needed in a seating arrangement. The dimension for end spaces has been factored into these calculations. However, the following chart will provide these dimensions. Chair Series End Dimension Fusion 2" (5) Legend 2" (5) To use the Chair Size Chart, follow these procedures: 1. Determine the space available for each row. [The chart automatically calculates a 2" (5) spacing at each end of the row. If you require 3" (8), you must factor the difference in.] 2. Read down the column marked "feet" and then across the top marked "inches" and find the appropriate dimension. 3. Select the chair sizes from the suggested combinations. 4. Staggered seating may be achieved by using varying chair size combinations in alternate rows. NOTE: Reference applicable building code to determine the maximum number of seats allowed in a row.

6 Floor & Riser Design Requirements/Guidelines ROW SPACE* See elevation drawings for dimensions EXAMPLE 4 rows (3 spces) at 33 = rows (3 spces) at 33 = 8 3 CLEAR SPACE* See elevation drawings for envelope dimensions *NOTES : 1. Refer to applicable building codes. 2. Spacing varies with tablet arm applications. Consult Hussey Engineers for details. 3. Row space dimensions will be the sum of "clear space" (see building codes) plus "chair envelope" (see chair dimensions) plus any additional space as desired for convenience to permit patron easy access to concessions, restrooms, etc. Overall Spacing of Chairs (Back to Back) Number of Seating Row Space Dimensions Rows (Spaces + 1)

7 Sightline Formula Principle of Visibility Line of Clear View for Spectator on Tiered Seating: Angle A: Angle of Perfect visibility; looking over all heads. Angle B: Angle of Good visibility; shifting position to look between heads on the row immediately in front of the spectator and over all heads. Angle C: Angle of Fair visibility; shifting position to look between the heads of two rows immediately in front of the spectators and over all other heads. Definition: The lower angle of angle C is approximately 5" (13) above the eyes of the spectators in the third row in front of the spectators. This angle C is called the angle of clear view. The tangent of the angle of clear view = 3R-5"[13cm] / 3D, where R is the rise and D is the depth per row (row spacing). Head Level from the Floor 4'1" (124) Eye Level from the Floor 3'8" (112) Application: The final analysis being the perpendicular dimension from the court line or the line of play to where the angle of clear view intersects (focal point) should be as small as possible.

8 Principle of Visibility Angle B is commonly used in determining floor slope for auditorium, performing arts or theatre type seating configurations. When angle B profile is used in conjunction with staggered seating arrangement (chair staggered or alternated in arrangements of sizes opposite every other row) it allows unobstructed view of spectators to a determined focal point at the screen or stage. The final analysis is to have all sight lines intersect at the desired focal point. Angle C is most commonly used in determining riser or stepped applications for gymnasiums, arena or stadium type seating configurations. When angle B profile is used (generally associated with an aligned seating arrangement) it allows for unobstructed view of spectators to a determined focal point at court line or line of play. The final analysis is to have all the critical sightlines intersect the focal point or line of play at generally a maximum elevation of 4' (122).

9 Sightline Dimensions & Calculations 4'1" (124) = Top of head above seat (chair seating) 3'8" (112) = Eye level above deck (chair seating) Step 1: Solve for angle C, angle of clear view. Tan Angle C = (3 x Rise) - 5" (13cm) / 3 x Tread

10 Sightline Dimensions & Calculations Step 2: Solve for Distance A Using Trig function: Tangent = Opposite/Adjacent Tangent of Angle C = Distance D / Distance A Distance A = Distance D / Tan Angle A Step 3: Solve for Distance B Distance B = Distance A - Distance Step 4: Solve for Distance E Using Trig function: Tangent = Opposite / Adjacent Tangent of Angle C = Distance E / Distance B Distance E = Tangent of Angle C x Distance B

11 Profile Drawings - Legend 1'-10 1/2" 1'-2" SEAT LABEL ROW LABEL 1'-5" 2'-8" 10 1/16" 7 5/16" CHAIR SIZELINE FLOOR MOUNT ADA CHAIR WITH FLIP-UP ARM

12 Profile Drawings - Legend 1'-10 1/2" 1'-2" SEAT LABEL ROW LABEL 1'-5" 2'-8" 10 1/16" 7 5/16" CHAIR SIZELINE FLOOR MOUNT ADA CHAIR

13 Profile Drawings - Legend 1'-10 1/2" 1'-2" SEAT LABEL ROW LABEL 1'-5" 2'-0" 2'-8" RISER 10 1/16" 7 5/16" CHAIR SIZELINE FLOOR MOUNT

14 Profile Drawings - Legend 1'-10 1/2" 1'-2" SEAT LABEL ROW LABEL 6 3/4" MIN. RISER HEIGHT 2'-8" 2 3/4" 1'-5" 2'-0" 7 5/16" LOW RISE INTERMEDIATE CHAIR SIZELINE FLOOR MOUNT END

15 Profile Drawings - Legend 1'-10 1/2" 1'-2" SEAT LABEL 2'-8" ROW LABEL 2 3/4" /2" MIN. RISER HEIGHT 1'-5" 2'-0" 7 5/16" MID RISE INTERMEDIATE CHAIR SIZELINE FLOOR MOUNT END

16 Profile Drawings - Legend 1'-10 1/2" 1'-2" SEAT LABEL ROW LABEL 2 3/4" 1'-2" MIN. RISER HEIGHT 1'-5" 2'-0" 2'-8" 7 5/16" HIGH RISE INTERMEDIATE CHAIR SIZELINE FLOOR MOUNT END

17 Profile Drawings - Fusion FLOOR MOUNT

18 Profile Drawings - Fusion LOW RISER MOUNT

19 Profile Drawings - Fusion HIGH RISER MOUNT

20 Profile Drawings - Fusion

21 Profile Drawings - Fusion