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Home My WebLink About2227 Mackinac St - Special Inspections/Engineering - 08/23/2017Trown ±En#inrrrin-q, llc. Strurtural lEnginrering & Jns}rrrtiuns August 23, 2017 / FR Development tl Andrew Rausch 125 S. Howes St., 2"d Floor Fort Collins, CO 80521 Re: ( of tqt g'Observatton at' Restderice at Lot 18, Block 7, Timbervine 2"d Fil., 2227 Mackinac Street, Fort Collins, CO Crown Engineering, Re. Project No. 225-04-21 B-03 Gentlemen - We have visually observed the footing sizes at the residence currently under construction at the above referenced location. These observations were performed on June 19, 2017. It is our opinion that the footing sizes, was and steel,retnforcement were.in general c- -. _ n.,_.---,_. conformance,with the foundation plan, drawn by Crown Engineering, Inc., Job No. 225-04-21- 101, dated April 20, 2017 and modified on May 12, 2017. Thank you for consulting with us on this phase of your project. If you have any questions, please do not hesitate to contact me at (970) 691-4239. Sincerely, arawn Fxd,14O Aal Ur. Structural Main Office 524 Stover Street Fort Collins, Colorado 80524 Phone (970)498-9537 Cell (970) 691-4239 Fax (970) 221-1521 e-mail revc5af54•m5n Com grown +�n�inPPrin�, llr. _*irurlural Engiurering & Jnoperliuns August 23, 2017 FR Development, Ltd. 125 S. Howes, 2nd floor Fort Collins, CO 80521 / �7 W _ r -- m _._ Re: Fo dundun ation Wall,Steel-Reinforcem_ent,& Ufer Ground=Rod'Observation �✓ at Residence at Lot 18, Block 7, Timbervine 2nd Fil., 2227 Mackinac Street, Fort Collins, CO Crown Engineering, llc Project No. 225-04-21B-04 Gentlemen: We have visually observed the wall steel reinforcing -placed In the forms at the residence currently under construction at the above referenced location. This observation was performed on June 21, 2017. It is our opinion that the steel re nnforcem ttne hat was placed ii ,the forms -is -in generals----' "- 4. 11 rt. x' �confornia ce with th!, foui dation planiiydrawn by Crown Engineering, Inc., Job No. 225-04-21- 01, dated April 20, 2017 and modified on May 12, 2017. A ufer ground rod was also observed to be installed within the foundation wall reinforcing steel. The ground rod was placed per generally acceptable placement recommendations. Thank you for consulting with us on this phase of your project If you have any questions, please do not hesitate to contact me at (970) 691-4239. Sincerely, Cii ruwn +E Reyes Sarrmento, .E. 3t3159 Structural Engineer Ali+=4 Main Office 524 Stover Street Fort Collins, Colorado 80524 Phone (970) 498-9537 Cell (970) 691-4239 Fax (970) 221-1521 e-mail revess5@msn cum (grown ±Engtneerinq, Ur. 3lrurtural Enginerring & Jnspertiuns August 23, 2017 FR Development, Ltd 125 S. Howes, 2"d Floor Fort Collins, CO 80521 31, 7-2e co�-L71&0 Re: `P.erimeter•Drain & Damp -proofing Observations a`t Lot 181 Block 7, Timbervine d Fil., 2227 Mackinac Street, Fort Collins, CO Crown Engineering,11c. Project No. 225-04-21 B-05 Gentlemen: We have visually observed the perimeter drain being installed around the interior perimeter of the crawl space of the home under construction at the above referenced location. The drain consists of 4" perforated and socked,drain,pipe._It is -placed around the crawl space interior perimeter. It is our opinion that the (drain- an&sumppit-as•instaledled should Be an adequate means of draining out any rain, irrigation, or ground water that may filtrate to the crawl space elevation of the home. The damp-proofinghas also been applied using standard acceptable practices. Thank you for consulting with us on this phase of the project. If you have any questions, please do not hesitate to contact me at (970) 691-4239. Sincerely, �� ariawn ±E414inJPfv . ` ,, Ur. P.E. Structural Main Office 524 Stover Street Fort Collins, Colorado 80524 Phone (970)498-9537 Cell (970) 691-4239 Fax (970) 221-1521 e-mail revessf592nsn.cum Trown nginrrring, llr. jlruAnral Enginerrtng & 3nzVrrtiun% August 23, 2017 FR Development, Ltd. Andrew Rausch 125 S. Howes Street, 2"d Floor Fort Collins, CO 80521 Re: Excavation Observation for Lot 18, Block 7, Timbervine 2"d Fil., 2227 Mackinac Street, Fort Collins, CO Crown Engineering, llc. Project No. 225-04-21B-02 Gentlemen: As requested, on May 30, 2017, we visually observed the excavation at the above referenced location. The purpose of this observation was to verify that the subsurface conditions encountered in the excavation are generally consistent with those outlined in the soils report performed by CTL/Thompson, Inc., Project No. FC06508-115. This letter is not intended to be a summary of the soils report and does not meet the disclosure requirements of Colorado Senate Bill 13, 6-6.5-101. At the time of our observation, the excavation had been completed. The excavation revealed gravelly sand and sandy gravels to the depths excavated for crawl space foundation construction The subsurface conditions exposed in the excavation appeared to be generally consistent with those described in the above referenced soils report, which recommends a continuous spread footing and isolated pad type foundation system for these subsurface conditions. We also recommend that an exterior perimeter drain be constructed for this structure. Thank you for consulting with us on this phase of the project. If you have any questions, please do not hesitate to contact me at (970) 6914239. Sincerely, (16rown 7,E SA Tit Structural Main Offue 524 Stover Street Fort Collins, Colorado 80524 Phone (970)498-9537 Cell (970) 691-4239 Fax (970) 221-1521 e-mail reves45(wmsn cum t 6rnwn Fnginerring, llr. jlrnrtural TEnflinerring & + laspertiuns August 24, 2017 �z0 -C)— ye FR Development, Ltd. 125 S. Howes, 2"d Floor Fort Collins, CO 80521 Re: 2"d Floor Steel Beam Supporting posts (Ends of W 12x58) & middle post of continuous W I Ox17 at common wall between Walk In Closet and Mech. Room. at Lot 18, Block 7, Timbervine 2ad Fil SI2227 Mackinac Stfeetjort Collins, CO Crown Engineering,11c. Project No. 225-04-21B-06 Gentlemen: We have reviewed the modified posts supporting 2"d Floor beams at the above referenced residence currently under construction. The 5x5x1/4 steel columns at the ends of the W 12x58 Steel Beam were replaced with 7-2x6 built up columns at each end. The center column for the 2"d floor beam over the Mechanical room and walk-in closet did not land on the intended steel beam in the crawl space. The following are our comments/recommendations for the modified fr4ming conditions. The center post for the continuous 2"d floor beam can be extended to a new concrete pad in the crawl space. The column can be in two sections, one section at the main level walls, solid blocked through the floor system and picked up again with another section of steel column in the crawl space and then supported on a 40"x40"x 10" thick reinforced concrete pad in the crawl space Reinforcing should be #4 rebar spaced at 10" on center each way. The 7-2x6 built up posts at each end of the W 12x58 Steel Beam are an adequate substitution and should adequately supportthe imposed design loads at their locations. Thank you for consulting with us on this phase of the project. If you have any questions, please do not hesitate to contact me at (970) 691-4239. Sincerely, Grown E 'I fA7159 Structural Engineer "� r'1•°°°°'�C�`` Main Office NA4�� 524 Stover Street Fort Collins, Colorado 80524 Phone (970) 498-9537 Cell (970) 691-4239 Fax (970) 221-1521 e-mail revessfSCAmsn cum ar wn TiEnginrertnq, 11r. �§irurlural Enginerring & +Jnopertions August 24, 2017 /��-L�(� a -5 o ��'1 FR Development, Ltd. / 125 S. Howes, 2nd Floor p Fort Collins, CO 80521 vG`idr '41 e ee- S Re: 4-Ply Microllam Member Connections �. at Lot 18, Block 7, Timbervine 2nd Fil., 2227 Mackinac Street; Fort Collins, CO Crown Engineering, Ile. Project No. 225-0421 B=07 Gentlemen: The 4-ply Microllam beams used at this project should be assembled with a minimum of two 5" ledgerlok wood screws at 12" on center alternating sides. Thank you for consulting with us on this phase of the project. If you have any questions, please do not hesitate to contact me at (970) 691-4239. ,Sincerely, Twrn ±EngtiOrritn.g.& Ur. ra P.E. Structural Main Office 524 Stover Street Fort Collins, Colorado 80524 Phone (970)498-9537 Cell (970) 691-4239 Fax (970) 221-1521 e-mail revessf5Q'11`1511 corn