Request For Tender Stara, The City Of Helsinkis Construction Services Company, Is Requesting Your Tender For The Construction Contract For The Safety Turf Of Tilkanniity Playground Viiri In Accordance With This Tender And The Attached Tender Documents. The Procurement Entity Is Stara. The Procurement Will Be Used By Staras Urban Infrastructure Construction Department. The Job Site Is Located In A Park Called Tilkanniitty In Haaga (29.) District. The Object Of The Procurement Is The Construction Of A Safety Artificial Turf At The Work Site In Accordance With This Request For Tenders And Its Attachments. The Procurement Will Be Carried Out As A Fixed-Price Total Price Contract And One Contractor Will Be Selected To Carry It Out. This Procurement Notice Has Been Sent For Publication On 9 June 2026 In The Hilma Public Procurement Notification Channel And Tender Service, Through Which The Tender Must Also Be Prepared And Submitted. In Plan Drawings. The Work Area Of The Contract Is Shown In Plan Drawing No. Vio 6376/207. Contract-Time The Contract Implementation Date Is August 3. - 5 September 2026. Preparation Of The Offer The Tenderer Must Include In The Fixed Contract Sum He Offers All The Costs Of Acquiring, Working And Installing All Necessary Materials To Achieve The Agreed Work Result, As Well As All The Costs Of Labor And Equipment Related To The Installation Work. The Customer Will Carry Out The Necessary Excavation And Filling Work In The Contract Area, As Well As The Raw Base Of The Installation Platform (-50 Mm Below The Bottom Surface Of The Artificial Turf). The Contractor Shall Works: Safety Artificial Grass, So-Called Pile Carpet, According To Drawings Vio 6376/200 And 207. The Technical Definitions Of Safety Turf Are Presented In The Plan Vio 6376_207_Ote260603. As The Pile Carpet Installation Layer, The Contractor Spreads 50 Mm Grain Size 0-6 Mm Rock Ash So That The Substrate Is Permeable To Water. In The Steepest Parts Of The Hump, Stone Ash Is Replaced With Earth-Moist Concrete, According To The Manufacturers Instructions. The Floor Work Must Be Done With Particular Care, And No Humps Or Depressions Must Form In The Base Or Air Must Remain Under The Carpet. An Elastic Layer Is Installed Under The Pile Carpet According To The Fall Height Of Each Play Or Exercise Equipment. The Elastic Layer Is Recommended To Be Made Uniform With The Same Thickness For The Entire Area Of The Play Equipment, In Which Case The Thickness Is Determined By The Maximum Fall Height Of The Equipment In That Area. Elastic Layers Of Different Thickness Often Appear As Unevenness On The Finished Surface. If Elastic Layers Of Different Thicknesses Are Made, They Should Be Made In As Large Areas As Possible. The Thickness Of The Elastic Layer Varies Between Different Manufacturers, And Must Always Be Checked For Each Product. Regardless Of The Type/Model Of The Synthetic Fall Base Solution, The Theoretical Critical Fall Height Of The Fall Base Chosen For Installation Must Be At Least 20% More Than The Free Fall Height Of The Play Equipment In Question. Before Commissioning The Object, Hic Tests Are Performed As A Customer Purchase, The Results Of Which Must Meet The Requirements Of Standard En 1177, And The Required Limit Values. The Locations Of The Play Equipment And The Extent Of Their Safety Platforms Must Be Precisely Measured And Found To Be Sufficient After The Installation Of The Equipment Before Making The Final Surfaces. The Carpet Must Be Reserved For Min. 200 Mm Wider Area In All Directions For Installation And Fixing. The Artificial Grass Is Glued At The Edges To The Concrete Stone Below The Surface According To Pictures Vio 6376/207 And 210. The Direction Of The Carpet And The Points Of The Seams Are Planned Before Starting The Installation. Carpets Should Be Installed In A Uniform Area, Always In The Same Direction And In As Large Pieces As Possible, So That The Direction Of The Pile Is Uniform And No So-Called Patchwork Is Created. The Places Of The Seams Should Be Positioned In Such A Way That The Seam Does Not Reach The Point Of Worst Wear. On A Slope, The Seams Are Positioned Vertically Perpendicular To The Slope. After Installation, Dried And Sieved Quartz Sand 0.4–0.7 Mm, 8–10 Kg/M² Is Brushed Over The Safety Artificial Grass. The Finished Surface Of The Safety Artificial Grass Is On The Same Level Throughout The Entire Area, Regardless Of Whether There Is An Elastic Layer Under The Grass Mat Or Not, The Safety Areas (Elastic Layers) Must Not Be Visible On The Finished Surface. The Person Performing The Installation Must Have Experience With Similar Installations. Even Installation Is Checked During The Inspection. The Materials Of The Safety Platform Must Not Contain Harmful Substances Or Pah Compounds Above The Guideline Values. All Materials Procured By The Contractor Must Be Approved By The Customer. Bid Competition Bids Must Be Submitted According To The Request For Bids By The Deadline. Staras Procurement Unit Checks The Suitability Of The Bidders. The Procurement Competition Is Won By The Bidder Who Gave The Lowest Bid Price Among The Eligible Bidders. The Contract For The Implementation Of The Contract Is Made In Accordance With The Contract Contract Model Provided In Appendix 1. Invoicing The Work The Contract Amount Is Billed Based On The Schedule Of Payment Installments According To The Completion Of The Parts Of The Work. The Contractor Asks The Customer For Invoicing Permission For The Completed Sub-Area Before Sending The Invoice. The Customers Representatives Ensure The Quality Of The Work Performance Before Approving The Invoicing Of The Installment.
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