Term Definition
Black Iron Cap 1 like
Steel fitting with female threads which seals the end of a pipe
Blackboard1 like
Panel or board with a smooth dark surface to writing on using chalk
Blacktop 0 likes
Asphaltic concrete paving
Blade1 like
The flat cutting edge of a knife, saw, or other tool or weapon.
Blanc Fixe 0 likes
Artificially manufactured barium sulphate; an extender pigment
Blanket Insulation1 like
blanket insulation
Thermal insulating material made of fibrous glass or mineral wool, at times with paper or foil surfacing, formed in batts or rolls
Blanket Mortgage 0 likes
Single trust deed or mortgage that covers two or more parcels of real property
Blankets 0 likes
Fiberglass or rockwool insulation in long rolls 15 inch or 23 inch wide
Blast Angle 0 likes
Angle of sand blasting nozzle with reference to surface
Blast Cleaning 0 likes
Cleaning with propelled abrasives
Blast Freezer1 like
blast freezer
Low temperature evaporator using a fan to force air quickly over the evaporator surface
Blast Furnace 1 like
Smelting furnace in which compressed hot air is driven
Blast Furnace Slag 0 likes
Non-metallic waste product used both in the manufacture of portland blast furnace slag cement and as an aggregate for lightweight concrete
Bleach1 like
Removes color and stains
Bleacher 1 like
Outdoor tiered stand of benches for seating at a sports center
Bleaching 1 like
Restore discolored or stained wood to its normal color or lighten with bleaching agents
Bleb 0 likes
Small blister or bubble
Bleed-Valve1 like
Valve with a small opening inside that allows a minimum fluid flow when valve is closed
Bleeder Gun 0 likes
Spray gun with no air valve; trigger controls fluid flow
Bleeding 0 likes
Upward motion of asphalt in an asphalt pavement producing a film of asphalt on the surface
Discoloration usually at a joint on a finished wall or ceiling in gypsum board
Penetration of color from the underlying surface; seeping of a stain or lower coat through the top coat, ruining the appearance of the top coat
The draining or loosening of saturants from the roofing material
When coloring material from the wood or undercoat works into succeeding coats and imparts to them a certain amount of color; see Extractive Bleeding.
Slowly reducing the pressure of liquid or gas from a system or cylinder by slightly opening a valve
Bleeding Stain 1 like
Stain which moves through coats of finishing materials
Blend 0 likes
Mix or make homogeneous
Blending 1 like
Mixing a color with another so the colors mix or merge gradually
Blind1 like
Panel, shade, shutter, or screen mounted on a window to block out light, provide protection, insulate or serve as decoration
Blind Header 0 likes
A concealed header in the interior of a wall not appearing on the faces
Blind Nailing 0 likes
Attaching boards to framing or sheathing with nails driven through the edge of each piece so they are hidden by the next board
Nailing the back portion of a roofing ply so the nails will be hidden by the next ply of roofing
Blind Stop 0 likes
Rectangular wood molding in a window assembly that receives the window screen frame
Blind Story 0 likes
Building story without windows
Blind Vent 0 likes
Ineffectual vent in a wall with the appearance of a vent but does not function as a vent
Blinding 1 like
Compacting soil immediately over a tile drain to limit its tendency to move into the tile
Blister 0 likes
Raised sg pot in a built-up roof due to the expansion of trapped moisture, water vapor, or other gases, between any of the layers of roofing or moppin
Loose raised spot on the gypsum board face as a result of an air space or void in the core
Blistering 0 likes
During firing of ceramic tile, the creation of enclosed or broken macroscopic vesicles or bubbles in a body, glaze, or other coating
Bulging of the finish plaster coat as it separates from the basecoat; the resulting protuberances are often called Turtle Backs
Forming of bubbles on surface of paint or varnish film, generally due to moisture behind the film or excessive heat
Blisters 0 likes
Cloudy or milky-looking raised spots on finished surfaces
Protrusions on the finish coat of plaster as a result of applying an overly damp base coat or troweling too early
Block 0 likes
Building split into separate functional parts; distinctive part of a building or structure
Rectangular area of land in a town or city
Block Coating 0 likes
See Transition Primer
Block Dampproofing 0 likes
Applying a water-resistant material to the surface of a concrete or masonry block to stop transfer or absorption of water or moisture; see Dampproofing
Block Demolition 0 likes
Tearing down a block wall
Block Grout 0 likes
Mortar mixes employed in block walls to fill voids and joints
Block Out 0 likes
Mounting a box or barrier in a foundation wall to stop the concrete from entering an area; foundation walls are sometimes blocked to enable mechanical pipes to pass through the wall, to install a crawl space door, and to depress the concrete where a garage door is located
Block Plane2 likes
block plane
Woodworking hand tool used for final smoothing
Block Sequence 0 likes
Combined longitudinal and buildup progression for a continuous multiple-pass weld where separated lengths are totally or partly built up in cross-section prior to intervening lengths being deposited; see Backstep Sequence
Block Vent 1 like
Opening outlet or inlet for air in a block structure
Block, Angle 0 likes
Tile square to change the direction of the trim
Block, Concrete 0 likes
Hollow concretemasonry unit composed of a composite material of sand, cement, coarse aggregate, and water
Block, Glass 0 likes
A hollow masonry unit made of glass
Block, Granite 0 likes
Masonry unit consisting of a tough natural igneous rock
Block, Splash 0 likes
Small masonry block positioned in the ground under a downspout to obtain roof drainage and stop stagnant water or soil erosion
Block, Terminal1 like
block, terminal
Decorative end of a block structure
Blocked Diaphragm 0 likes
Diaphragm with all sheathing edges not on framing parts are secured and connected to wood blocking
Blocked, Door Blocking 0 likes
Wood shims used between the door frame and the vertical structural wall framing elements
Blocked, Rafters 0 likes
Short 2 feet by 4 feet used to keep rafters from twisting at the ends and at mid-span
Blocking 0 likes
Small wood pieces tightly positioned between joists, studs, or rafters in a building frame to stabilize the structure, prevent fire transfer, preserve insulation, or provide a nailing surface for finish materials
System of combining two brick walls that were not built simultaneously; the two adjoining or intersecting walls are joined by offset and overhanging blocks of courses of bricks
Bloom 0 likes
Whitening; blushing; cloudy appearance on varnished surface
Clouding or fogging of paint film, generally due to reactive materials in paint film connecting with dust, oil, gases in air or soluble particles in rain
Blots 0 likes
Marks or stains on the tile face
Blow 0 likes
Large paper area separated from the core during manufacturing in gypsum board; seen as a large swollen blister or a full loose paper sheet
Blow Back 0 likes
Rebound of atomized sprayed substance
Blown-In Insulation 0 likes
Loose cellulose insulation placed in an attic, crawl space, or wall by a blowing machine
Blowout 2 likes
Concrete form giving way
Blowtorch1 like
Gasoline torch employed in burning off paint film by seasoned painters
Blue Lead 0 likes
Bluish-gray lead sulphate that prevents rust
Blue Print 0 likes
Copying method used for architectural drawings to describe the drawing of a structure prepared by an architect or designer
Blue Stain 0 likes
A blue or grey discoloration of the sapwood as a result of the growth of certain dark-colored fungi on the surface and interior of wood
Blue Stake 0 likes
When a utility company comes to the job site, locates and spray paints the ground or installs small flags to display the location of their underground service; also called Utility Notification
Blue-Tops 0 likes
Surveyor’s stakes marked with a blue lumber marking crayon
Blueprint 2 likes
Construction drawing
Bluestone 0 likes
Dark-green to blue-gray sandstone, used in thin slabs to pave surfaces for pedestrian traffic
Blunging 0 likes
Wet agitation process of blending or suspending ceramic material in liquid
Blushing 0 likes
Finish that takes on white or grey cast during the drying period generally due to the precipitation or separating of part of the solid content of the material, creating an opaque appearance
Applied to lacquer when it becomes flat or opaque and white on drying; usually occurs when applied in a humid atmosphere
BM 0 likes
Bench mark
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How to Fix Plumbing Noises In Your Home

plumbing fiberglass insulationTo diagnose loud plumbing, you must first determine whether the unwanted sounds occur on the system's inlet side - in other words, when water is turned on - or on the drain side. Noises on the inlet side have various causes: excessive water pressure, worn valve and faucet parts, poorly connected pumps or other appliances, incorrectly placed pipe fasteners, and plumbing runs with excessive tight bends or other restrictions. Noises on the drain side usually originate from poor location or, as with some inlet side noise, a layout with tight bends.


Hissing that occurs when a faucet is opened slightly generally signals excessive water pressure. Consult your local water company if you suspect this problem. They will tell you about the water pressure in your area and if necessary, can install a pressure reducing valve on the incoming water supply pipe.


Thudding, often accompanied by shuddering pipes when a faucet or appliance valve is turned off, is a condition called water hammer. The noise and vibration are caused by the reverberating wave of pressure in the water, which suddenly has no place to go. Sometimes opening a valve that discharges water quickly into a section of piping with a restriction, elbow, or tee fitting can produce the same condition. Water hammer can usually be fixed by installing fittings called air chambers or shock absorbers in the plumbing to which the problem valves or faucets are connected. These devices permit the shock wave produced by the halted flow of water to dissipate in the air, which unlike water, is compressible. Older plumbing systems may have short vertical sections of capped pipe behind walls on faucet runs for the same purpose; these can eventually fill with water, reducing or destroying their effectiveness. The solution is to drain the water system by turning off the main water supply valve and opening all faucets. Then open the main supply valve and close the faucets one at a time, starting with the faucet closest to the valve and ending with the one furthest away.

Chattering or Screeching

Intense chattering or screeching that occurs when a valve or faucet is turned on, and that usually disappears when the fitting is fully open, signals loose or defective internal parts. The solution is to replace the valve or faucet with a new one. Pumps and appliances such as washing machines and dishwashers can transfer motor noise to pipes if they are improperly connected. Link these items to plumbing with plastic or rubber hoses - never rigid pipe - to separate them.

Other Inlet Side Noises

Creaking, squeaking, scratching, snapping, and tapping are usually caused by the expansion or contraction of pipes, generally copper ones supplying hot water. The sounds occur as the pipes slide against loose fasteners or strike nearby house framing. You can often pinpoint the location of the problem if the pipes are exposed; just follow the sound when the pipes are making noise. Most likely, you will discover a loose pipe hanger or an area where pipes lie so close to floor joists or other framing pieces that they clatter against them. Attaching foam pipe insulation around the pipes at the point of contact should resolve the problem. Be sure straps and hangers are secure and provide sufficient support. Where possible, pipe fasteners should be connected to large structural elements such as foundation walls instead of framing; doing this reduces the transmission of vibrations from plumbing to surfaces that can amplify and transfer them. If attaching fasteners to framing is unavoidable, wrap pipes with insulation or other resilient material where they contact fasteners, and sandwich the ends of new fasteners between rubber washers when installing them. Correcting plumbing runs that suffer from flow-restricting tight or numerous bends is a last resort that should be performed only after consulting a skilled plumbing contractor. Unfortunately, this situation is common in older homes that may not have been built with indoor plumbing or that have been through several remodels, particularly by unprofessional contractors.

Drainpipe Noise

On the drain side of plumbing, the main goals are to eradicate surfaces that can be struck by falling or rushing water and to insulate pipes to contain unavoidable sounds. In new construction, bathtubs, shower stalls, toilets, and wall-mounted sinks and basins should be set on or against resilient under-layments to lower the transmission of sound through them. Water-saving toilets and faucets are less noisy than conventional models; install them instead of older types even if codes in your area still allow older fixtures. Drainpipes that do not run vertically to the basement or that branch into horizontal pipe runs supported at floor joists or other framing present especially troubling noise problems. These pipes are large enough to radiate substantial vibration; they also carry significant amounts of water, which makes the situation worse. In new construction, use cast-iron soil pipes (the large pipes that drain toilets) if you can afford them. Their immense size contains much of the noise made by water traversing them. Also, avoid routing drainpipes in walls shared with bedrooms and rooms where people gather. Walls containing drainpipes should be soundproofed as stated earlier, using double panels of sound-insulating fiberboard and wallboard. Pipes can be wrapped with special fiberglass insulation made for the purpose; these pipes have an impervious vinyl skin that sometimes containing lead. Results are not always acceptable.

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