Red Wing Housing & Redevelopment Authority428 West Fifth Street Telephone & TDD (651) 388-7571Red Wing, MN 55066 FAX (651) 385-0551

Website: www.redwinghra.org

November 10, 2015

To: Red Wing HRA Board of Commissioners

From: Randal Hemmerlin, Executive Director

Re: Securing Damaged CanopyContract Approval-over

Background:

On October 22, 2015, a sub-contractor for MAVO Construction backed into the

Canopy on Jordan Tower I with a dumpster. The first section of the canopy as well asthe foundation supporting the canopy was substantially damaged. Both theContractor's Insurance Company and HRA's Insurance company (HAI Group) havebeen contacted with claims filed. The HRA does not expect any monetary loss due tothis accident.

Staff has been working with Dan Dege of Finn Daniels on the repair of canopy.

A structural engineer (WJE Engineers) was employed to analyze if the damagewarranted further protection in case of high winds or any kind of mishap. Theanalysis indicated it would be best to shore up the structure until a permanent repaircould be done for the safety of all people that may be in the area. Red WingConstruction bid $7,368 to complete that work on November 2. The ExecutiveDirector signed the contract to proceed immediately to protect people from a canopymishap from high winds or any other cause.

A copy of the contract is attached.

Work was to begin on November 3 by Red Wing Construction.

Recommendation:

Staff and the Finance Committee give the Board of Commissioners a favorablerecommendation to ratify the decision by the Executive Director to proceed with acontract with Red Wing Construction as it is above his typical $5,000 limit. TheExecutive Director took the action due to resident, staff and visitor safety reasons andto minimize any further damage that might occur to the canopy in case of inclementweather or other mishaps.

EQUAL OPPORTUNITY HOUSING / EQUAL OPPORTUNITY EMPLOYMENT

proposalRed Wing Construction Company

Submitted to! Jordon Towers Phone:651-388-3498

Fax:

Street: 433 West Fourtli Street Dote: 11/2/2015

City, Slate, Zip; Red Wing, MN 55066 Job Name; Canopy Shoring

We hereby submit specifications and estimates for:Proposal #15 119

Attn: Dan Dege

We propose to perform the following work:• Shore Damaged Canopy Per Plans and Specs By WJE Engineers, Priced Base On Thi'ee Months

Add $170.00 Per Month for Anything Beyond Three Months. Price Is Figured With PrevailingWage Rates.

Total Amount of Proposal $7,368.00

Terms and Conditions follow on next page.

Thank you for allowing Red Wing Constmction Company to bid on this project!

Prpfp^l Submitted by:

Date

fandyRed Wing Construd'tion, Inc. Jordon Towers

Important Notice: This proposal must have your signed approval befom t!ie above \vork can take place.

Tliis proposal may be withdrawn by us ifnot accepted within 10 days.

Accepted by:read ̂ agree to the Teniis & ConditicSs onpag

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Terms and Conditions of this proposal:

1) Notice to Proceed - Ten days wtittcn notice shall be given to Contractor that the work Is ready to proceed. If the work Is not ready when our menarrive, or if we cannot proceed with work continuoasly because of conditions beyond our control, the Owner shall assume any extra costs resultingtiierefrom.

2) Time and Method of Payment - Once Construction begins, the Owner slioll pay the Contractormonthly the amount requested upon llieContractor's Request for Payment for the progress made during the previous month, wliich Request will be submitted at the end of each month.The Owner sliall pay the Contractor within 15 working days oftlie Request for Payment date. All sums remaining unpaid after 15 working daysfollowing Contractor's Request for Payment shall bear Interest at the rate of 12% per annum untU paid. The Owner shall be responsible for allcosts of collection, including attorney's fees or lien filings In the event payment Is not made within 90 days.

3) Extra Work Orders - Changes in the work may be accomplished after execution of this agreement without invalidating this agreement by use of anExtra Work Order. Extra Work Order forms will be provided upon request by the field foreman on site. Owner agrees to timely discuss changesor extra work with the field foreman and must sign the Extra Work Order form before the work can commence. The adjustment to the contractsum shall be determined on the basis ofreasonable expenditures and savings of those performing the work attributable to the change. In the caseof an increase In the Contract Sum, the cost shall Include a 15% mark-up for overhead and profit. Ii» such case. Contractor shall keep an Itemizedaccounting together with appropriate supporting data. The contract sum will be adjusted based on e.xtra costs (in the cose of extra work) orsavings (in case of a decrease in work) for purposes of an Extra Work Order Include: (1) Labor Costs will be billed at our standard billing ratesfor each regular hour and time and 1/2 for overtime. This billing rate includes costs for direct labor, social security, retirement plan contributions,unemployment insurance, fringe benefits and worker's compensation Insurance; (2) Costs of materials, supplies and equipment. Including cost oftransportation: (3) Rental costs of machineo' and equipment exclusive of hand tools, whether rented fiora tlic contractor or others; (4) Costs ofpermit fees and sales, use or similar taxes; (5) Additional costs of supervision and field office personnel directly attributable to the change; andfees paid to an Architect, engineers and other professionals.

4) Subcontractors • All portions ofwork not performed by the Contractor shall be performed under subcontracts or other appropriate agreements withthe Contractor. The osvner sliall communicate with contractors only througli the Contractor. If, despite this condition, the Owner rcqoests workfiom (he subcontractors directly, it will be responsible for the costs of all such work independently of the obligations of this contract.

5) Site - Owner apees to vacate the work site to the extent possible during construction. Any such Interference will be subject to Extra Work Orderswithout the written consent of the Owner. Contractor agrees to inform the Ossncr Immediately Ifsuch condition is causing work delays to thefield crew.

6) Lien Rights - Please notice: Any person or company supplying labor or materials for this improvement toyour property may file a lien against your property if that person or company is not paid for theircontributions. Under Minnesota law you have the right to pay persons who supplied labor or materials forthis improvement directly and deduct this amount fi-om our contract price, or signed by persons who suppliedany labor or materials for the improvement and who gave you timely notice.

7) lasuraace - Owner to carry fire, tornado, and other necessary insurance.

8) Title • Title to material sirall pass to owner upon deliver)' on the Job and all responsibility for loss of, and damage to materials after such deliveryis assumed by owner.

9) Back Qiargcs - This Proposal is predicated on there being no back charges for light, heat, power, water, cleaning, watchman service or similarItems. It Is understood that no back charges for labor performed or material ftimishcd by others shall be made to us, unless such labor isperformed or materials ftjmishcd on our written order.

10) Storage Space - Provided any material Is not shipped earlier than tlie date requested, safe and ndequatc storage space will be provided by Owner.If the space provided is inconveniently located or in another building, the extra cost of transporting to and from storage will be reimbursed byowner.

11) Cleaning • Work will be left "broom clean." Cleaning of glass, erection dust and washing are considered maintenance work to be performed byOftiicr.

WjE

November 6,2015

Wiss, Janney, Elstner Associates. Inc.605 North Highway 169, Suite 1000

Minneapolis, Minnesota 55441

763,544.1170 tel ] 763.544.1180 faxwww.wje.com

Mr. Randal Hemmerlin

Executive Director

Red Wing Housing and Redevelopment Authority428 W 5th St.

Red Wing, MN 55066

Re: Jordan Tower I

Canopy Impact Damage Assessment433 West 4th Street

Red Wing, MN 55066WJE No. 2015.6162

Dear Mr. Hemmerlin:

As requested, Wiss, Janney, Elstner Associates, Inc. (WJE) performed an inspection of vehicle impact

damage to the wheelchair ramp canopy at Jordan Tower I located in Red Wing, Minnesota. It is ourunderstanding that the vehicle impact occurred on October 22,2015. Our scope of work included reviewingavailable plans, a close-up inspection of the canopy damage in order to provide conceptual temporaryshoring recommendations and scope of repair. This letter summarizes our assessment.

BACKGROUND

Canopy Construction

The Jordan Tower I canopy, shown in Figure 1, was constructed circa 2010 and measures approximately20 feet long by 12 feet wide. For the purpose of this report, the 20 foot dimension spans east-west and the12 foot dimension spans north-south, as shown in Figure 2. Design drawings depict the canopy assymmetric about the support columns, but the design was modified during the original construction suchthat the distance from the columns to the east edge is shorter than the distance from the columns to the westedge.

The canopy foundation consists of a 48 inch (east-west) by 18 inch (north-south) reinforced concrete pieratop a spread footing. The projection of the pier above the sidewalk is between 13-1/2 and 15-1/2 inches.A steel column baseplate is connected to the pier with four 7/8-inch diameter epoxy anchored threaded rodsembedded approximately 12 inches into the concrete pier. The concrete clear cover around the anchor rodswas, at minimum, 2 inches. The concrete piers were cast at an unknown date prior to the construction ofthe canopy.

The canopy framing is supported by two 8x8x5/16 HSS sections, spaced 24 inches on center in the east-west direction. The canopy is approximately 10 feet above sidewalk level. The columns extend above thecanopy approximately 6 feet where they connect to four 1-1/4 inch diameter steel rods which support thenorth and south edge of the canopy.

Headquarters & LalKiratCN'ies-Northbrook, Illinois

Atlanta | Austin | Boston ] Chicago | Cleveland | Dallas | Denver | Detroit | Honolulu | Houston | Los AngelesMinneapolis | New Haven | New York | Princeton | San Francisco | Seattle | South Florida | Washington, DC

WJEMr. Randal Hemmerlin

Red Wing Housing and Redevelopment AuthorityNovember 6,2015

Page 2

The canopy framing consists of 10 inch deep I-shaped steel members framing the perimeters of the overallcanopy and two 4 foot square skylight openings. The canopy framing is supported at the columns with two-bolt shear tabs and full penetration welds and along the north and south edges with 1-1/4 inch diametersteel rods. Welded connections exist between the steel framing members. The roof consists of 1-1/2 inchcorrugated metal decking. Architectural soffit and fascia panels were supported by light gauge metal furringprior to them being removed before our inspection.

WJE INVESTIGATION

Site Visit

A site visit was performed by Messrs. Lucas Malm and Tanner Swenson of WJE on October 30, 2015.Observations were made from grade, via a step ladder, and from atop the canopy. The fascia and soffitaround the structural canopy framing were removed by others prior to our site visit. The followingsummarizes our observations:

■ Cracking and spalling of the concrete pier was observed, as shown in Figure 3 and Figure 4. Damagewas most severe at the northeast comer, where an embedded anchor was exposed. There was no visibleevidence that the concrete damage continued below the level of the sidewalk.

■ The columns were rotated toward the south by approximately 1.5 degrees, or 2-1/2 inches in 8 feetwhen measured with an inclinometer. No obvious evidence of structural damage (i.e., cracking,localized buckling) was observed in the columns.

■ Minor scraping in the structural steel I-shaped member was observed at the northeast comer of thecanopy, as shown in Figure 5 and Figure 6.

■ Out-of-plane deflections were observed in the canopy framing stmcture, as shown in Figure 7 andFigure 8. The deflections are more severe along the east edge of the canopy, resulting in a visible non-planar shape. No evidence of stmctural damage was observed in the steel framing members or thewelded connections.

■ The slopes of individual members were recorded at several locations. The slopes provided a measureto compare the out-of-straightness of the member in the vertical direction (i.e. camber). The north beamexceeded camber limitations set by ASTM A6, Standard Specification for General Requirements forRolled Structural Steel Bars, Plates, Shapes, and Sheet Piling. The east edge beam exhibited deflectionsslightly lower than the limit. See Figure 2.

■ No cracks were noted in the welded connections throughout the canopy stmcture, which were observedat arms-length.

FINDINGS

The Jordan Tower I canopy and support stmcture exhibits damage consistent with reports of a vehicleimpact which occurred on October 22, 2015 including displacement and rotation of the stmcture to thesouth, particularly at the east end. Cracking and spalling in the concrete pier occurred as bending stresseswere introduced through the columns and anchor rods.

WJEMr. Randal Hemmerlin

Red Wing Housing and Redevelopment AuthorityNovember 6,2015

Page 3

CONCEPTUAL SCOPE OF REPAIR

The following conceptual scope of repair was developed based upon our site observations and review ofthe canopy plans:

1. Because the canopy structure has been damaged and no longer remains stable, the structure should beand temporarily supported as soon as possible. A conceptual temporary stability plan was provided byWJE on November 2, 2015 to be implemented until the repair work can be performed. It should benoted that the temporary stability measures should not be relied upon for longer than 6 weeks withoutfurther engineering.

2. The concrete pier repairs should consist of removal of loose material and recasting the pedestal with anappropriate repair mortar for the anchor bolts to be installed after casting with epoxy adhesive or duringcasting as a cast-in-place embedment. The repair of the concrete material should engage the existingreinforcing steel, should consider limitations placed on the use of post installed anchors in repairmaterial, and follow practices outlined by the International Concrete Repair Institute (ICRI).

3. The column baseplate and welds should be reviewed for bending that may have occurred from theimpact. If the baseplate is damaged, it should be repaired or replaced in kind. There was no noteddistortion to the columns themselves.

4. The steel canopy structure above the foundation did not sustain any significant structural damage whichcould affect its long term performance, however It is clear that the out-of-plane displacement isdetrimental to the appearance of the structure and its architectural function to control drainage. Whilethere are possible alternatives to replacing the canopy structure, the alternatives come with manytechnical difficulties and would not result in a structure which would be returned to its pre-impactedstate. The recommended repair would be to remove the steel canopy structure and replace it with anewly fabricated structure to be attached to the columns.

LIMITATIONS

The scope of work described above is general in nature and presented as an outline summary to be used asa baseline for the development of detailed repairs. This document is not intended to be used in lieu ofdetailed repair construction documents. Prior to repairs being performed on this project, a detailed set ofrepair drawings and specifications shall be developed by a qualified design professional. All work identifiedherein is to be performed in accordance with industry standards, applicable Codes, and productmanufacturer's written instructions.

It was a pleasure to be of service to you on this project. Please call us if you have any questions regardingthis report.

Sincerely,

WISS, JANNEY, ELSTNER ASSOCIATES, INC.

WJEMr. Randal Hemmerlin

Red Wing Housing and Redevelopment AuthorityNovember 6,2015

Page 4

Lucas Malm, P.E.

Minnesota Lie. #49031

Senior Associate

Tarmer Swenson

Associate II

WJEMr. Randal Hemmerlin

Red Wing Housing and Redevelopment AuthorityNovember 6, 2015

Page 5

Location of impact

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Figure 1. Overall view ofthe structure with the impact being notedon the northeast comer.

WJEMr. Randal Hemmerlin

Red Wing Housing and Redevelopment AuthorityNovember 6, 2015

Page 6

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Figure 2. Plan view ofcanopy structural framing showing true north and reference north. The directionofmeasured downward slopes of structural steel members are notated by arrows, with larger arrow sizesindicating a larger measured slope. Members that exceed or are close to exceeding allowable out-of-straight tolerances perASTM A6 are shown by red and orange dashed boxes, respectively.

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/•Figure 3. Concrete cracking and spoiling onnorth face of pier. Note the exposed anchor(arrow).

Figure 4. Concrete cracking on south face ofpier (arrow).

WjEMr. Randal Hemmerlin

Red Wing Housing and Redevelopment AuthorityNovember 6, 2015

Page 7

Figure 5. Northeast corner of canopy. Note thedeformed soffitframing (arrow).

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Figure 7. View ofeast face ofcanopy. Note therotation ofthe canopy and columns to the south.

Figure 6. Northeast comer of canopy. Note theminor scraping in the structural steel member(arrow).

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Figure 8. View ofnorth face ofcanopy. Note thelarge deflections near the eastface.