Ward Construction provides services in the greater San Francisco Bay Area including, Oakland, Berkeley, Richmond, San Francisco, Walnut Creek, Lafayette, Orinda, Moraga, Hayward, Marin and other East Bay and North Bay cities.
Here\’s an example of the type of services provided:
We will construct a drainage system along the left, rear and right sides of the residence, not including the garage. The system will start on the left side adjacent the rear of the garage with a trench 3 feet deep.
The drainage system consists of two pipes in a rock filled trench. One is perforated, to collect sub-surface water and the other is non-perforated, to collect water from the roof downspouts. At the upper end or start of both lines, as well as at the major corners, a clean-out will be provided so that both lines can be tested or cleaned as necessary.
The minimum depth for the perforated pipe will be below the grade of the soil under the house and both the perforated and non-perforated pipe will fall at least 1/8 inch per foot for the total length of the system to the point of discharge.
The perforated pipe will be installed on top of a bed of gravel, two inches deep, with the perforations pointed down. The trench will then be then backfilled with drain rock. The rock we recommend is Class I, Permeable Type A drain rock per the California State Specifications. The drain rock is clean gravel that varies in size from 1/4 to 1/2 inch.
The trench will be a minimum of 12 inches wide. This permits a four inch blanket of rock on each side of the four inch perforated pipe.
The system will discharge through a 4-inch solid pipe from the front right corner, down the side slope and through the curb to the street. We will remove and replace a strip of concrete 12 feet long on the left side adjacent the air conditioner units, a strip 16 feet long including the step on the rear patio adjacent the left corner, and a strip on either side of the rear step on the second rear patio.
We will replace all the concrete removed with concrete to match the existing as close as we can, but it will still be noticeably different. It is impossible for the new concrete to exactly match the old.
Some of the landscaping will need to be trimmed back; other smaller specimens will need to be re-located.
