1000 SE EVERETT MALL WAY BASE FILE 2018-01-01 MF Import

Plan Check ll2.7- Larry Callahan Au9ust 9, 1985 Page Five h. Column struts between frame coluinns ai�e provided for all frames except "frame 7". They should be provided for that frame as well . 5. Ductile moment resisting space frames: a. Welded connections betwe�n primary members of the ductile moment-resist- ing space frames should be tested by nondestructive methods for com- pliance with UBC Standard 27-6. The test program should be established by the engineer-of-record and shown on the plans and specifications. The program should include the minimum requirements in Section 2722(f). The requirements should be shown on the plans and specifications. b. In order to qualify as a moment resisting space frame unde�• the defini- tion of Section 2312(b), all columns should have a joist, bezm or girder framing into them in two perpendicular directions at each floor. IJhere joists line up with columns, their connectiun to the column should be detailed to insure that nominal moment resistance is achieved at all joints. Where joists do not line up with columns, such as grid D-7 on Sheet 5-4, a member siiould be added. c. The connection between beams & columns in the ductile frames(Detail 4/S-7) should develop the full plastic moment capacit,y of the beams. Section 2722(d). This cannot be achieved by welding only the beam flanges to the columns. In lieu of this , calculations must demonstrate that adequate ductile joint displacement capacity can be developed with a lesser connection. Section 2722(d), exception d. The shears in many of the panel joints of the ductile frames, and in many of the doubler plates where they are provided, exceed the allow- able shear in equation 21-5 of Section 2721. e. The conneciions between the duct�le columns and roof girders should be detailed. Section 302(c). The typical fioor 9irder-to-column details do not apply at the roof. 6. hl�mbro composite floor system: a. "Hambro" �omposite steel joist and concrete deck floor systems are proposed for the building. See Evaluation Report PFC-2869. You could if you wish, accept this systzm under Section 105. b. If the systems are proposed to achieve a fire resistive floor/ceilin9 assembly, the project specifications should clearly outline the method of installation, to verify coinpliance with said report. Note that ceiling runners are required in 2 perpendicular directions for the proposed joist spacings.