To determine if an 8x8 PT (pressure-treated) beam can span 18 feet with a live load of 70 psf, you would typically need to refer to span tables or structural engineering guidelines. Generally, an 8x8 beam is not sufficient to span that distance under such a load without significant deflection or failure. It’s advisable to consult a structural engineer for an accurate assessment and proper design.
The answer to this question depends upon several criteria: 1. The span of the floor framing members 2. The 'on center' spacing of the floor framing members 3. The nominal dimension of the floor framing members (2x12 etc.) 4. The grade and species of the wood 5. Size and location of any holes or notches in the framing members A typical residential floor designed for a 10 psf Dead Load, 40 psf Live Load and a deflection criteria of L/360 (mid span deflection limited to L in inches/360): 2x12 joists at 16" on center spacing, Spruce-Pine-Fir #2, will have an allowable max span of 17'-10". 2x12 joists at 16" on center spacing, Southern Pine #2, will have an allowable max span of 18'-10". 2x10 joists at 16" on center spacing, Spruce-Pine-Fir #2, will have an allowable max span of 15'-5". Random thoughts: Thinset ceramic tile with mortar will add about 10 psf dead laod. Location of very heavy objects can be critical when determining a floors capacity.
The load capacity of a 4-inch slab floor can vary based on factors such as the type of concrete mix, reinforcement, and design specifications. Typically, a standard 4-inch reinforced concrete slab can support a live load of approximately 40 pounds per square foot (psf) for residential applications. However, for commercial or industrial use, the load capacity may be higher, often ranging from 50 to 100 psf or more. It's essential to consult structural engineering guidelines or a professional to determine the specific load capacity for a given application.
40 psf
A DLH will work.
Possibly, but you haven't mentioned thickness of the steel -8 x 24 is not enough info for that calculation.
Short Answer... YES Reality... it would take a very large amount of weight to bring down a wood house. Take for instance the usual design load found in most homes today. The home must be designed to carry a 30 PSF live load and a dead load of 20 PSF (PSF = Pounds per Square Foot), for a total design load of 50 PSF. A 50 psf load in a house with a floor space of 1000 sf would be a load of 50,000 lbs or about 25 tons to reach the design maximum. With that said, the actual load required to create failure would be much greater due to design increases required for safety factors. At which time bowing of the floor/ceiling assembly would be noticed before catastrophic failure occurred and the floor collapsed. If there are damaged structural members or point loading occurs, failure could be expected sooner. This is a simple description of the concepts Terry
Snow load depends on geographic location, not on roof pitch. Most of Washington falls into the 25 psf snow load. Snoqualmie, for example, has a 50 psf snow load since it receives a higher amount of snow fall than an area such as Seattle. Your county building department can answer this question for your specific location and/or has a snow load map where you can look it up yourself.
A deck with 2x6 joists spaced 16 inches on center (oc) can typically support a live load of around 40 pounds per square foot (psf) and a dead load of 10 psf, totaling approximately 50 psf. The exact weight capacity will depend on factors such as the type of wood used, the length of the joists, and local building codes. For more precise calculations, it’s advisable to consult a structural engineer or refer to local building codes.
The answer to this question depends upon several criteria: 1. The span of the floor framing members 2. The 'on center' spacing of the floor framing members 3. The nominal dimension of the floor framing members (2x12 etc.) 4. The grade and species of the wood 5. Size and location of any holes or notches in the framing members A typical residential floor designed for a 10 psf Dead Load, 40 psf Live Load and a deflection criteria of L/360 (mid span deflection limited to L in inches/360): 2x12 joists at 16" on center spacing, Spruce-Pine-Fir #2, will have an allowable max span of 17'-10". 2x12 joists at 16" on center spacing, Southern Pine #2, will have an allowable max span of 18'-10". 2x10 joists at 16" on center spacing, Spruce-Pine-Fir #2, will have an allowable max span of 15'-5". Random thoughts: Thinset ceramic tile with mortar will add about 10 psf dead laod. Location of very heavy objects can be critical when determining a floors capacity.
The load capacity of a 4-inch slab floor can vary based on factors such as the type of concrete mix, reinforcement, and design specifications. Typically, a standard 4-inch reinforced concrete slab can support a live load of approximately 40 pounds per square foot (psf) for residential applications. However, for commercial or industrial use, the load capacity may be higher, often ranging from 50 to 100 psf or more. It's essential to consult structural engineering guidelines or a professional to determine the specific load capacity for a given application.
The ground snow load in Alberta, Canada varies depending on the location, but it is typically in the range of 20-30 pounds per square foot (psf) for residential areas. It is recommended to consult the National Building Code of Canada or local building authorities for specific information on snow load requirements in Alberta.
The weight of snow load for roof design is determined by factors such as the geographic location, historical snowfall data, and the roof's slope. Building codes typically provide specific guidelines, often expressed in pounds per square foot (psf), to account for the expected snow accumulation. In general, the basic snow load can range from 20 psf in areas with minimal snowfall to over 100 psf in regions with heavy snowfall. Engineers must also consider factors like snow density and thermal effects on the roof structure.
To determine the appropriate beam size for spanning 16 feet under a 35 psf roof load, you would typically consult a span table or structural engineering guidelines. Generally, a glulam beam or a steel I-beam may be needed, with sizes varying based on factors like the beam material and specific load conditions. For a rough estimate, a glulam beam of about 3x12 or a steel I-beam around 8x10 inches could be suitable, but a structural engineer should be consulted for precise calculations and local code compliance.
Multiply psi by 144 to get psf.
For steel siding with 1" deep corrugations at 4" o.c. approx. siding weight would be: 24 Ga. 1.36 PSF 22 Ga. 1.72 PSF 20 Ga. 2.05 PSF 18 Ga. 2.70 PSF