Fifth_, lay pipe to curb and test.

_Sixth_, fill in street trench.

_Seventh_, lay pipe into building and test.

_Eighth_, set curb box.

_Ninth_, refill trench.

_Tenth_, thoroughly consider any special conditions.

_Street Sewer._--Large pipe in streets to receive all soil and
waste from buildings.

_House Sewer._--Conveys sewage from building to street sewer,
extends from foundation wall to sewer.

_Street Main._--Water pipe running parallel with the street,
belonging to the water company.

_Service Pipe._--Runs from the street main into the building.

_Corporation Cock._--Brass stop tapped into street main.

_Goose Neck._--Lead pipe which connects the street main and service
pipe.

_Trench._--Hole dug to receive pipe.

_Main Tapped._--Hole drilled through wall of main and a thread made
on it while pressure is on.

_Curb Cock._--Brass shut-off placed at curb.

_Solder Nipple._--Piece of brass pipe with thread on one end and
plain on the other end which connects lead and iron.

_Coupling._--Fitting which connects two pieces of pipe.

_Stop Cock._--Brass fitting for stopping flow of water.

_Curb Box._--Iron box extending from curb cock to surface.

_Curb Key._--A long key to fit in side of curb box to operate curb
cock.

_Swab._--Stick with ball of rags or paper on one end.

CHAPTER VIII

INSTALLING OF FRENCH OR SUB-SOIL DRAINS

[Illustration: FIG. 45.--Sub-soil drain.]

When a building is erected on a site that is wet or springy, some
means of carrying off the surplus water in the ground must be
provided for, or the basement of the building will be flooded with
water. For the thorough understanding of the methods employed in
laying a drain of this kind, I will go over it carefully and the
beginner can read it and then study it, and understand just how it
is done. A site may appear to be dry on the surface of the ground
and yet be very wet under the surface. If no information can be had
regarding the site, it is always well to drain the site if it is on
a slope or near a body of water and on the water shed of a river or
lake. If a building is a large one and the foundation goes down
very deep, the site should always be drained. The drain is laid
under the basement floor and around the outside of the foundation
wall on a level with or lower than t