Timber And Engineered Woods

It is called composite wood, man-made wood, or processed wood includes a range of derivative wood products.

A wood which is suitable or fit for engineering construction or engineering purpose.

These types of trees are only fit for engineering construction.

The capacity of a product to react to the moisture content of the air by absorbing or releasing water vapor.

Refers to thin slices of wood, usually thinner than 3 mm (1/8 inch), that typically are glued onto core panels to produce flat panels such as doors, tops and parts of furniture.

It is made by gluing together plies in odd numbers. Gluing is done under pressure.

The sawed wood meant for construction in the form of boards is called lumber.

The organic matter obtained from trees is called wood.

All fasteners used for the attachment or siding shall be or a corrosion-resistant type.

used for exterior wall covering, provided the frame or the structure is covered with building paper

When _________ is used for covering the exterior of outside walls, it shall be of the M-1, M-S and M-2 Exterior Glue grades.

________ shall be designed in accordance with the general provisions of this chapter and the special provisions in this section.

It shall be installed horizontally and applied to sheathed or unsheathed walls

Shall be covered on the outside with the materials and in the manner specified in the National Structural Code of the Philippines.

Shall be gapped 3 mm and nails shall be spaced not less than 9 mm from the edges and ends of sheathing.

______ is stronger in tension along the rain but it’s quite difficult to determine this because of the difficulties in conducting test.

When conducting a tension perpendicular to the grain, the load shall be applied continuously throughout the test at a rate of motion of the moveable crosshead is ___ in (2.5mm)/min

It may be used for exterior wall covering, provided the frame or the structure is covered with building paper.

Wood shingles or shakes or siding may be nailed directly to approved fiberboard nail-based sheathing not less than ____ mm. nominal thickness with annular grooved nails.

The compression-parallel-to-grain tests shall be made on ______ in. (50 by 50 by 200 mm) primary method specimens, or 1 by 1 by 4 in. (25 by 25 by 100 mm) secondary method specimens

When conducting a compression perpendicular to grain, the testing machine speed used should not vary by more than _____ from that specified for a given test

Solid wood siding shall have an average thickness of ____ mm unless placed over sheathing permitted by this chapter

________ shall be covered on the outside face with a weather resistive barrier when required.

When conducting a tension parallel to the grain, the load shall be applied continuously throughout the test at a rate of motion of the moveable crosshead is ___ in (1 mm)/min.

Where Plywood is used for covering the exterior or outside wall, it shall be one of the exterior types not less than ____ mm thick

The modulus of elasticity in bending and bending strength is determined by applying a load to the _____ of the test piece supported at two points

The bending strength of each test piece is calculated by determining the ratio of the bending moment M, at the maximum load Fmax, to the moment of its _____

_____ floors shall be framed and constructed and anchored to supporting wood stud or masonry walls

Wood may be used to support glass block masonry having an installed weight of ____ kg/m^2 or less

Lap siding shall be installed _____ and applied to sheathed or unsheathed walls.

Primary methods provide for specimens of 2 by 2-in. (50 by 50-m) cross-section.

A secondary method which utilizes a 1 by 1-in. (25 by 25-mm) cross section has been included

The values stated in inch-pound units are to be regarded as the standard.

Specimens for the test in the air-dry condition shall be dried to approximately constant weight before test. Should any changes in moisture content occur during initial preparation of specimens, the specimens shall be reconditioned to constant weight before test.

Since friction is compensated for in the machine adjustment, the initial angle may be regarded as exactly 30, 45, or 60deg., as the case may be.

The compression-perpendicular to-grain tests shall be made on 1 by 1-in. (25 by 25-mm) specimens.

All apparatus used in obtaining data shall not be calibrated at sufficiently frequent intervals to ensure accuracy.

Four of the static bending specimens from each species shall be selected for photographing, as follows: two average growth, one fast growth, and one slow growth.

These specimens shall be photographed in cross section and on the radial and tangential surfaces.

When tested, the specimens shall be at a temperature of 69 + 6°F (20 + 3°C).

The temperature at the time of test shall in all instances be recorded as a specific part of the test record.

The actual width of the bearing plate shall be measured

The testing machine speed used should not vary by less than 25 % from that specified for a given test

Measure the width and depth of the wooden beam

Adjust the load pointer to zero by lifting the lower table. While applying the load, the deflection corresponding to each load is found out from the Vernier scale on the UTM.

Fix the transverse test pan at the lower side of the lower cross head.

Note down the maximum deflection and the maximum load.

Insert the bending device in the UTM.

Fix it on the rollers of the transverse test brackets such that the load comes at the center and measure the length of the span of the beam between the supports for central loading

Adjust the support for the required distance and clamp to the lower table.