The lead to be of the best description known as milled lead, to hold the full weights specified and to be free from all defects, to be laid in the best manner and well dressed down in valleys, gutters, flashings, etc., all edges to be cut straight, and to include all necessary solder, tacks, wall hooks, lead dots, welts, etc.

Externally

Gutters

Lay the gutters with 6-lb. lead turned up 6 inches against walls, parapets, etc., going under tiles 9 inches at least, and to give a vertical depth of 6 inches.

Lay similar back gutters to all chimney stacks, etc.

Falls

The gutters to be laid to falls of 2 inches in 10 feet, and with 2-inch drips not more than 10 feet apart.

Soakers

Where sloping roofs abut against walls, stacks, skylights, etc., provide 4-lb. lead soakers, their length equal to the gauge and lap of tiling added together, and 8 inches wide, 4 inches under tiles and turned up 4 inches against walls, etc., one to each course of tiles, and to be fixed by the tiler.

Flashings

Cover the upturned edges of lead gutters, etc., with 5-lb lead flashings 6 inches wide, turned into joints of brickwork or raglets in stone, and lead wedged and pointed (see Bricklayer), and where against woodwork to be close copper nailed and bedded in white lead.

Stepped Flashings

Cover the upturned edges of soakers with 5-lb. stepped flashings 6 inches wide, and fixed as described to flashings.

Aprons

Put to fronts of chimney stacks, skylights, etc., 5-lb. aprons 12 inches wide, fixed as described to flashings.

Laps

All flashings, aprons, etc., to lap 3 inches at joints and 6 inches at angles.

Cesspools

Line the cesspools with 6-lb. lead with soldered angles, and solder to outlets from same 3 inches diameter drawn lead socket pipes equal to 8-lb. lead, and bent as required.

Dormer Cheeks

Cover the cheeks of dormers and the spandrel reveals of attic windows as shown with 5-lb. lead, copper nailed at top edges under tiles, and secured to boarding with brass screws and soldered dots, one to every superficial yard.

Wire Covers

Provide and fix to all outlets of gutters, including the cast-iron eaves gutters, and to rain-water heads, stout copper wire covers; those to gutter outlets to be domed.

Provide and fix stout copper wire balloon covers to tops of all lead ventilating pipes.

Internally

Pipes

The lead pipes to be drawn of the best make, and to include all joints, tacks, wall hooks, bends, etc., and fixing complete.

Joints

All joints to be wiped solder.

The whole of the internal plumber's work to be in strict accordance with the regulations of the Water Company, and to their approval.

The pipes are to be of the following weights:-

Lead Slates

All pipes taken through roof to have 5-lb. lead slate tafted and soldered to pipe.

Safes

Line the safes with 5-lb. lead turned over rim at edges and open copper nailed; form outlet and solder on short length of 3/4-inch lead pipe taken through roof with copper flaps on end.

Overflows

Take from water-waste preventers 3/4-inch lead overflows through wall, with copper flaps on ends.

Take from cisterns in roof 1 1/2-inch lead overflows through roof, with copper flaps on ends.

Wastes And Traps

Put under scullery sink and lavatory basins 2-inch Dubois or Sutcliff drawn lead traps with brass cap and screw for cleaning, and take from traps 2-inch lead waste pipes through wall, and connect to main 2 1/2-inch waste carried up at least 3 feet above eaves, and connected at foot to side inlet of gulley with a brass thimble and wiped soldered joint; the waste to be fixed with lead tacks as described to soil pipe.

Washer And Waste

Provide and fix to scullery sink 2-inch brass washer and waste with movable grating.

Soil Pipe

Provide and fix from w.c.'s a main 4-inch internal diameter drawn lead soil pipe equal to 8-lb. lead fixed with cast lead tacks not more than 3 feet apart to oak plugs in brick joints with moulded headed nails, connected at foot to drain with brass thimble and wiped soldered joint, and carried up above roof as shown as vent pipe, the branches from the w.c.'s to be of similar pipe bent as required and connected to traps of w.c.'s with brass collar and flanged and bolted joint.

Anti-Siphonage Pipe

Take from the trap of lowest w.c. at a point 4 inches beyond the outgo a 2 1/2-inch anti-siphonage pipe secured with tacks as described to soil pipe, and connect to soil pipe 3 feet above top of highest trap; take 2 1/2-inch similar branch pipes from similar points on the traps of upper w.c.'s, and connect to main anti-siphonage pipe with soldered branch joints.

Flushing Pipes

Provide and fix 1 1/4-inch lead flushing pipe from w.w.p. cisterns connected to arm of w.c. with canvas and putty joint.