4717 EVERGREEN WAY 2016-01-01 MF Import

� . 1 I � � H � � y 4: C m G� •. � � The base course and leveling course material should be compacted to 95 percent of maximum � � � i- dry density as defined by ASTM:D 1557. H °� y H �'' All concrele should have a minimum of 6 sacks of cement per cubic yard and a minimum 28- � z , day compressive strength of 4000 pounds per square incn (psi). The concrete should be w � �v properly cured a t�iinimum of 7 days immediately after p]acemenL We furiher recommend that � � � -- all concrete ccntain 5 percent entrained air for freeze-thaw prolection, and be placed at a � � maximum 2.5 inch slump. The wear sudace should be textured with a coarse metal broom or z N � �;� rake finish to provide sk�d resislance. y �...� L:, � y To allow for an orderiy arnr,gement of the cracking that concrete naturally undergoes during H ,.,, curing, we recommend placement o(coniraction joints. The depth of the joints should be � � r sawed mto the hardened concrete, formed by plastic strips, or tooted into the concrete during placemenL ConUaction joints should be placed at a maximum of 20 foot intervals. If rigid � �'�' pavement is to be used for covering broad expanses, contraction joints should be placed on a 20-foot grid pattem. � Expansion joiuts should be installed at 60-foot intervals along the drive-thru ]ane. These joints � will also function as contraction joints. The expansion joints should be 3/4-inch wide. All � ' expansion and contraction joinls should be filled wilh suitable filler malerial. Load transfer dowels should be installed perpendicular to all pavement contraction and expans:on joints. These dowels should be 3/4-inch diameter (M6), smooth bars, 18 inches in length, tF.us allowing 9 inches of penetration on each side of the joint. Load transfer dowcls should be spaced 12 inches on-center and be set 3 inches below the concrete surface. Suitable wire mesti reinforcement, properly placed in the upper 1/3 of the slab, should also be provided � ; for ail concrete pavement. I��j' �; r 12.0 PROJE T D Ril'N AND ON TR i("�'TON MON17i0RiN i - — � '��I We recommend that Associated Earth Sciences, Inc. perform a geotechnica] review of the r! I plans prior to final design completion. In this way, our earthwork and foundation �� , L . recommendations may be propedy interpreted and implementcd in the design. ' �� '- We are also available to provide geotechnical engineering and monitoring services during I �� construction. As stated previously, footing subgrade preparation and footings must be inspected by Associated Earth Sciences, Inc. to venfy that the exisling fill sediments will be suitable for foundation support in all areas. The integrity of the foundation depends on proper site preparation and construction procedures. In addition, engineering decisions may have to ' a.� be made in the field in the event that variations in subsur(ace wnditions become apparent. . . 'I �o_� , �� �� . . . 9 , .. '