Never erect the structure under power lines. • Identify whether underground cables and pipes are Thank you for purchasing this GrowSpan™ high tunnel. present before preparing the site or anchoring the When properly assembled and maintained, this product will structure.
Page 3
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ The steps outlining the assembly process are as follows: 1. Verify that all parts are included in the shipment. Notify Customer Service for questions or concerns. 2. Read these instructions, the Must Read document, and all additional documentation included with the shipment before you begin.
Page 4
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ SHELTER ACCESSORIES AND CONSTRUCTION SUGGESTIONS The diagram below describes accessories available for your building and suggests ways to improve the stability of the customer-supplied end framing. Contact your sales representative to purchase or to learn more about accessories.
Page 5
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ BASEBOARD NOTE RIBBON BOARD REQUIRED: DROP-DOWN SIDES A customer-supplied baseboard and retaining board A customer-supplied two-piece ribbon board is required are required to attach the drop-down side curtains. The for the installation of the drop-down curtain. Fasteners are baseboard is optional but recommended for a building included.
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ REQUIRED TOOLS The following list identifies the main tools needed to assemble the shelter. Additional tools and supports may be needed depending on the structure, location, and Customer Notes application. • Tape measure or measuring device •...
Page 7
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ The following graphics and photos will help you identify the different parts. (Some parts are not shown.) 103496 AS5020 Pulley Gearbox (drop-down sides only) FA4482B 103544 102921 QH1404 102717 102856 Tek Screw Mounting Plate...
Page 8
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ Gothic Premium High Tunnel: H Models ATTENTION: These instructions describe the installation of the optional ridge vent kit. (Additional purchase required.) The ridge vent kit is designed for use with the HF model (5.2 oz. cover) only. If you have the C model or did not purchase the ridge vent kit, skip those installation procedures when presented and continue as instructed.
Page 9
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ LAY OUT THE BUILDING SITE 3. Use a transit or another method to position the second post, and to drive the post the same depth as the first After the site is prepared, lay out the building site.
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ ASSEMBLING THE FRAME COMPONENTS 2. Slide one (1) end purlin clamp (102857) onto the peak rafter pipe and one clamp onto each leg pipe. Position After the site is prepared and an inventory of parts is end clamps on the rafter pipes as shown.
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ ASSEMBLE THE FRAME 2. Secure the leg pipes to the ground posts using the 5/16" x 2 1/2" bolts (FAG336B) and FALB02B nuts. After all ground posts are driven in place and rafters are Secure using the top hole in the ground post.
Page 12
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ FRAME ASSEMBLY (continued) 9. Move to the interior rafter, verify that the rafter spacing is forty-eight inches (48") on-center (adjust as needed), 5. As the second rafter is steadied, take one section of and tighten the cross connector.
Page 13
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ FRAME ASSEMBLY (continued) NOTE: If two angled purlins end on the same rafter, INSTALL ANGLED PURLINS offset the purlins to fit on the rafter as shown in the diagram below. Gather the Parts: •...
Page 14
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ SIDE STRUT INSTALLATION 3. Attach the remaining end of the strut to the added band clamp on the first interior rafter. See the diagram that There are four (4) side struts for the shelter. These struts follows for location.
Page 15
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ INSTALL BASEBOARDS A customer-supplied baseboard is required to attach the drop-down side curtains. The baseboard is optional but recommended for a building with a roll-up side. Secure baseboard and ribbon board joints between rafters as shown for best results.
Page 16
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ ANCHOR ASSEMBLED FRAME At this point, anchor frame. Consult the MUST READ document for anchoring information and suggestions. Call customer service at 1-800-245-9881 for additional anchoring information if needed. CAUTION: Anchor assembly is an integral part of construction. Improper anchoring may cause instability and failure of structure to perform as designed.
Page 17
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ 116675 ENDWALL HEADER KIT — 30' WIDE GOTHIC PREMIUM HIGH TUNNEL (additional purchase required) If the 116675 endwall header kit was purchased for this high tunnel, consult those instructions now to assemble and install the kit components.
Page 18
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ CUSTOMER-SUPPLIED END FRAME ASSEMBLY 2. With assistance, lift and center the panel into position against the 4" x 4" end frame and attach the top to the Use these steps to install the end wall supports and header using wood screws and neo-bonded washers.
Page 19
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ ROLL-UP PANEL INSTALLATION (continued) END PANEL INSTALLATION—Use DCC4931 Material 5. Use the pipe diagrams on the End Framing diagram to Consult the End Panel Location diagram at the back of assemble the crank up assembly.
Page 20
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ RIBBON BOARD INSTALLATION ATTENTION: For those who purchased the 116675 endwall header kit, continue with these instructions at this 1. For both the drop-down and roll-up sides, attach the point once those instructions are completed.
Page 21
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ MAIN COVER INSTALLATION (Film or 5.2 oz Fabric) 2. Continue to attach the U-channel sections to the ribbon board and work toward the other end of the frame. The steps to install cover panels: 1.
Page 22
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ Buildings 120' long include a two-panel main cover consisting of two Gather Parts: (2) identical sections. Each 62' section covers one-half of the frame. Complete steps on this page to attach the 111613Z144 double •...
Page 23
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ RIDGE VENT KIT INSTRUCTIONS If you purchased the optional ridge vent feature for your 5.2 oz cover, continue with these steps. If you did not purchase The optional Ridge Vent Kit is available only on HF units the ridge vent feature, skip this procedure and continue with 5.2 oz.
Page 24
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ VENT HOLE TEMPLATE 12" 9" 24" 3" Hint: Create a vent hole template using a 12" x 24" piece of plywood. Cut 3" holes into the template as shown above. Space the three (3) holes 9" on-center.
Page 25
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ Film (or 5.2 oz) Cover Installation INSTALL MAIN COVER — SINGLE-LAYER FILM (OR 5.2 OZ) MATERIAL WEAR EYE PROTECTION Unpack main cover and pull into place. Ropes or straps are typically used to pull cover material WHEN onto and over frame.
Page 26
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ Cover Installation – continued 2. Along film edge that will be pulled over frame, tie pull Tennis ball tied rope (or strap) around a tennis ball, for example, and to film. toss free end of rope over frame. See photo.
Page 27
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ Cover Installation – continued ATTENTION: Ensure enough cover material is 10. Trim excess cover material if desired. present to lock into rafter u-channel. Typically, cover material is cut longer/wider than required. For easier ATTENTION: Allow some material to remain. This anchoring, allow approximately 10"...
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ FRAME CHECK INSTALL THE DROP-DOWN SIDES If your building includes roll-up sides, go to and complete Before you attach the side curtains, inspect the frame for the "Install Roll-Up Sides" procedure. Do not continue sharp edges or fasteners that could damage the curtain or with these drop-down curtain steps.
Page 29
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ INSTALL THE DROP-DOWN CURTAIN (continued) 6. With the mounting plate attached to the end rafter, take the 103496 gearbox and place it against the mounting 2. Measure approximately 12" above the ribbon board plate at the desired angle.
Page 30
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ INSTALL THE DROP-DOWN CURTAIN (continued) 13. Verify that the pipe is level and secure the band clamp to the underside of the second rafter using an FA4482B 10. Carefully lift the assembly and insert the tapered/free Tek screw.
Page 31
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ INSTALL THE DROP-DOWN CURTAIN (continued) Locate these parts to prepare the drop-down curtain for installation and to attach it to the axle conduit: NOTE: To prevent damage to the end panels, do • 131S075 pipe conduit not allow the free end of the axle to touch the inside •...
Page 32
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ INSTALL THE DROP-DOWN CURTAIN (continued) 5. Complete the curtain conduit installation by cutting the conduit so that it extends from the curtain pocket as Install Curtain Conduit and Attach Rope desired. After installing all eye screws and pulleys, locate the drop- 6.
Page 33
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ INSTALL THE DROP-DOWN CURTAIN (continued) 13. Drive two (2) FA4482 Tek screws with neo-bonded washers (102921) into the axle conduit where the 9. Locate the 1/8" curtain cord (CC5505) and cut a cord is located. Do not fully seat the Tek screws to the section of cord to the length determined in the previous conduit.
Page 34
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ INSTALL THE DROP-DOWN CURTAIN (continued) Complete these steps to attach the lower edge of the curtain to the customer-supplied baseboard. 17. Repeat the above steps until all cords are attached to the first curtain along one side of the shelter.
Page 35
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ Upper channel INSTALL ROLL-UP SIDES for main cover Complete the following steps: 1. Locate a roll-up side curtain (DD) and roll it out along the side of the frame. Position the pocket of the curtain away from the frame.
Page 36
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ ASSEMBLE THE ROLL-UP SIDE CONDUIT ATTACH CONDUIT TO ROLL-UP SIDE CURTAIN Gather the parts: Gather the parts: • Pipe 1.315'' x 75'' swaged (#131S075) • Assembled conduit • Tek screws (#FA4482B) • Fabric clips #CC6212 (One for each rafter position.) •...
Page 37
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ TWIST-OF-THE-WRIST ASSEMBLY 3. Select the aluminum channel, drill a 3/8" hole through Gather the parts: the channel approximately 2" from the end, and attach a threaded rod using a 3/8" nut on each side of the •...
Page 38
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ TWIST-OF-THE-WRIST ASSEMBLY (continued) 6. Select the bearing bracket and attach the bearings as 10. Attach the Twist-of-the-Wrist gearbox to the mounting needed. (In some instances, the bearings may come plate using hex head bolts.
Page 39
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ TWIST-OF-THE-WRIST ASSEMBLY (continued) INSTALL THE ANTI-BILLOW ROPES The anti-billow ropes secure curtains when they are fully 13. Slide the Twist-of-the-Wrist assembly onto the or partially open. Using the diagrams below, complete the aluminum channel from the ground end. (This is the anti-billow rope installation.
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ INSTALL ROLL-UP PANEL ROPES 3. Tie a length of rope to the first grommet hole below the guide post bracket, loop it around the first hook lag, The roll-up panel ropes are laced through the roll-up panel.
Page 41
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ INSTALL THE WIND PANEL ACCESSORY (OPTIONAL) 3. Place a 2' x 6' wind panel over the end of the drop- —DROP-DOWN SIDES ONLY— down curtain at one corner of the shelter and align it with the end rafter as shown below.
Page 42
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ INSTALL THE RIDGE VENT COVER Roll-Up Side Panel: Predrill through upper U-channel and ribbon board before attaching ratchets using If you purchased the ridge vent kit for your HF model, customer-supplied fasteners. continue with the steps below to compete the cover Ridge Vent Cover installation for the kit.
Page 43
• Depending on the contents, construction of the shelter, shelter materials, and shelter location, the potential for condensation exists. GrowSpan™ offers several items that can be used to alleviate a condensation condition. Please contact a GrowSpan™ representative for additional information.
Page 44
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ 14'-1 5/8" Height 6'-5" Side Wall QUICK START GUIDE 30' Gothic Premium High Tunnels 30'-0" Wid Grid Represents 12” Squares COVER MATERIAL • 6 ml FILM FOR HC MODELS • 5.2 OZ CLEAR FABRIC FOR HF MODELS (QC in material sku#.)
Page 53
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ ADDITIONAL PHOTOS PAGE 106734 Band Clamp Axle Conduit held in place by 106734 Rope band clamps. Pulley Ribbon Board Photo shows the fully assembled Baseboard drop-down curtain from the inside of a sample shelter.
Page 54
GROWSPAN GOTHIC PREMIUM HIGH TUNNELS ™ Suggestions: Winterizing the High Tunnel Ground Level Using customer-supplied materials, create "H" bracing within the roll-up end panel frame to support the panel during winter months and strong winds. Secure horizontal support using pins for easy removal. Vertical bracing can remain throughout the year if spaced according to needs.
Need help?
Do you have a question about the 108197H and is the answer not in the manual?
Questions and answers