INSTALL 2003 - Laserfiche WebLink

Home Browse Search

Project No. JB -314 1 April 2003 Page i GEOTECHNICAL STUDY SUMMARY continued FOUNDATIONS If the earthwork recommendations included in this report are complied with, the proposed kiosk, canopy structure, and sign/monuments may be supported by conventional foundations established on compacted, engineered fill. The recommended footing widths for continuous and isolated footings is 12 inches and 24 inches, respectively. The recommended embedment depth is 18 inches. The recommended allowable bearing capacity is 2,000 pounds per square foot (psf) for engineered fill. Lateral load recommendations are given in Section 6.3. The foundation should be designed according to the criteria presented in Table 3. • As an alternate, the canopy structure and sign/monuments may be supported on drilled, cast -in place pier foundation or a deep isolated footing system established on the native soil. The recommended allowable bearing capacity is 5,000 psf for native soil. Lateral load recommendations are given in Section 6.3. Pier foundations should be designed according to the criteria presented in Table 4. We recommend concrete slab -on -grade floors and exterior flatwork be a minimum thickness of 4 inches and the trash enclosure area slab be a minimum thickness of 6 inches. The actual slab thickness must be determined by the project structural engineer. The trash enclosure area pavement section should be a minimum of 6 inches of concrete over 6 inches of aggregate base and designed according to the recommendations presented in Section 6.7 Pavements. We recommend reinforcing the concrete slab -on -grade floors with a minimum of either, (1) No. 3 reinforcing bars spaced at 24 inches on center, or (2) with an alternate steel reinforcement as required by the project structural engineer. In general, the steel reinforcement should be supported by concrete dobies to maintain the 3 inch minimum requirement for clearance between earth and reinforcing steel for the slabs according to the latest UBC standard. If the slab is not thick enough to maintain the 3 inch clearance, the project structural engineer should determine the acceptable concrete cover. Crack control joints should be located as directed by the project structural engineer. PAVEMENTS Based the laboratory R -value test result of 5, our pavement section recommendations are as follows: PAVEMENT DESIGN CRITERIA TRAFFIC INDEX ASPHALT AGGREGATE BASE (inches) (mm) (inches) (mm) Flexible Pavement 5.0 3 80 10 255 5.5 3'h 90 11 280 6.0 3 %2 90 13 330 6.5 4 105 14 355 Full Depth Asphalt Concrete 5.0 7% 190 -- -- 5.5 8 Y. 215 -- -- 6.0 9 230 -- -- 6.5 10 255 -- — Rigid Pavement CONCRETE AGGREGATE BASE (inches) (mm) (inches) (mm) Concrete Pavement 6 155 6 155 �Korbmacher Engineering, Inc.